./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--usb--misc--idmouse.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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--usb--misc--idmouse.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 57ba9a4d546a973620a0029f54a814a104db676a0fd0f250dd5545a7c0f94302 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:25:50,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:25:50,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:25:50,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:25:50,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:25:50,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:25:50,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:25:50,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:25:50,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:25:50,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:25:50,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:25:50,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:25:50,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:25:50,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:25:50,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:25:50,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:25:50,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:25:50,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:25:50,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:25:50,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:25:50,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:25:50,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:25:50,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:25:50,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:25:50,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:25:50,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:25:50,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:25:50,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:25:50,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:25:50,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:25:50,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:25:50,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:25:50,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:25:50,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:25:50,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:25:50,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:25:50,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:25:50,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:25:50,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:25:50,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:25:50,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:25:50,619 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:25:50,657 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:25:50,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:25:50,658 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:25:50,658 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:25:50,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:25:50,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:25:50,660 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:25:50,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:25:50,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:25:50,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:25:50,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:25:50,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:25:50,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:25:50,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:25:50,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:25:50,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:25:50,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:25:50,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:25:50,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:25:50,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:25:50,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:25:50,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:25:50,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:25:50,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:25:50,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:25:50,665 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:25:50,665 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:25:50,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:25:50,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:25:50,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57ba9a4d546a973620a0029f54a814a104db676a0fd0f250dd5545a7c0f94302 [2021-11-06 14:25:50,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:25:50,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:25:50,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:25:50,952 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:25:50,953 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:25:50,954 INFO L432 ainManager$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--usb--misc--idmouse.ko-entry_point.cil.out.i [2021-11-06 14:25:51,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e849de97/e018fa24522f4912a6576e6bd7f5a4f7/FLAG386e3da04 [2021-11-06 14:25:51,583 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:25:51,583 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--usb--misc--idmouse.ko-entry_point.cil.out.i [2021-11-06 14:25:51,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e849de97/e018fa24522f4912a6576e6bd7f5a4f7/FLAG386e3da04 [2021-11-06 14:25:51,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e849de97/e018fa24522f4912a6576e6bd7f5a4f7 [2021-11-06 14:25:51,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:25:51,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:25:51,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:25:51,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:25:51,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:25:51,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:25:51" (1/1) ... [2021-11-06 14:25:51,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2baacda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:51, skipping insertion in model container [2021-11-06 14:25:51,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:25:51" (1/1) ... [2021-11-06 14:25:51,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:25:51,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:25:52,504 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--usb--misc--idmouse.ko-entry_point.cil.out.i[101600,101613] [2021-11-06 14:25:52,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:25:52,781 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:25:52,887 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--usb--misc--idmouse.ko-entry_point.cil.out.i[101600,101613] [2021-11-06 14:25:52,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:25:52,999 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:25:53,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:52 WrapperNode [2021-11-06 14:25:53,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:25:53,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:25:53,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:25:53,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:25:53,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:52" (1/1) ... [2021-11-06 14:25:53,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:52" (1/1) ... [2021-11-06 14:25:53,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:25:53,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:25:53,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:25:53,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:25:53,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:52" (1/1) ... [2021-11-06 14:25:53,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:52" (1/1) ... [2021-11-06 14:25:53,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:52" (1/1) ... [2021-11-06 14:25:53,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:52" (1/1) ... [2021-11-06 14:25:53,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:52" (1/1) ... [2021-11-06 14:25:53,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:52" (1/1) ... [2021-11-06 14:25:53,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:52" (1/1) ... [2021-11-06 14:25:53,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:25:53,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:25:53,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:25:53,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:25:53,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:52" (1/1) ... [2021-11-06 14:25:53,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:25:53,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:25:53,349 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) [2021-11-06 14:25:53,361 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 [2021-11-06 14:25:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:25:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:25:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:25:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:25:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:25:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:25:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:25:53,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:25:53,397 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 14:25:53,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:25:53,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:25:53,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:25:53,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:25:53,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:25:53,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:25:53,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:25:55,113 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:25:55,114 INFO L299 CfgBuilder]: Removed 333 assume(true) statements. [2021-11-06 14:25:55,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:25:55 BoogieIcfgContainer [2021-11-06 14:25:55,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:25:55,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:25:55,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:25:55,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:25:55,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:25:51" (1/3) ... [2021-11-06 14:25:55,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da07e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:25:55, skipping insertion in model container [2021-11-06 14:25:55,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:52" (2/3) ... [2021-11-06 14:25:55,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da07e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:25:55, skipping insertion in model container [2021-11-06 14:25:55,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:25:55" (3/3) ... [2021-11-06 14:25:55,125 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i [2021-11-06 14:25:55,130 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:25:55,131 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-06 14:25:55,183 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:25:55,189 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 [2021-11-06 14:25:55,189 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-06 14:25:55,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 288 states have (on average 1.4201388888888888) internal successors, (409), 294 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:55,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-06 14:25:55,230 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:25:55,231 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:25:55,231 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:25:55,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:25:55,237 INFO L85 PathProgramCache]: Analyzing trace with hash 146323834, now seen corresponding path program 1 times [2021-11-06 14:25:55,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:25:55,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906883112] [2021-11-06 14:25:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:25:55,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:25:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:25:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:25:55,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:25:55,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906883112] [2021-11-06 14:25:55,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906883112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:25:55,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:25:55,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:25:55,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423490913] [2021-11-06 14:25:55,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:25:55,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:25:55,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:25:55,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:25:55,692 INFO L87 Difference]: Start difference. First operand has 295 states, 288 states have (on average 1.4201388888888888) internal successors, (409), 294 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:55,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:25:55,886 INFO L93 Difference]: Finished difference Result 819 states and 1141 transitions. [2021-11-06 14:25:55,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:25:55,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-06 14:25:55,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:25:55,916 INFO L225 Difference]: With dead ends: 819 [2021-11-06 14:25:55,916 INFO L226 Difference]: Without dead ends: 513 [2021-11-06 14:25:55,924 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:25:55,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-11-06 14:25:56,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 511. [2021-11-06 14:25:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 505 states have (on average 1.3584158415841585) internal successors, (686), 510 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 686 transitions. [2021-11-06 14:25:56,034 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 686 transitions. Word has length 21 [2021-11-06 14:25:56,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:25:56,035 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 686 transitions. [2021-11-06 14:25:56,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:56,035 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 686 transitions. [2021-11-06 14:25:56,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-06 14:25:56,041 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:25:56,041 INFO L513 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] [2021-11-06 14:25:56,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:25:56,043 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:25:56,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:25:56,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2061979276, now seen corresponding path program 1 times [2021-11-06 14:25:56,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:25:56,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619592044] [2021-11-06 14:25:56,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:25:56,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:25:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:25:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:25:56,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:25:56,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619592044] [2021-11-06 14:25:56,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619592044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:25:56,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:25:56,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:25:56,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865504546] [2021-11-06 14:25:56,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:25:56,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:25:56,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:25:56,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:25:56,251 INFO L87 Difference]: Start difference. First operand 511 states and 686 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) [2021-11-06 14:25:56,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:25:56,270 INFO L93 Difference]: Finished difference Result 511 states and 686 transitions. [2021-11-06 14:25:56,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:25:56,271 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 [2021-11-06 14:25:56,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:25:56,274 INFO L225 Difference]: With dead ends: 511 [2021-11-06 14:25:56,274 INFO L226 Difference]: Without dead ends: 509 [2021-11-06 14:25:56,275 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:25:56,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-11-06 14:25:56,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2021-11-06 14:25:56,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 504 states have (on average 1.3571428571428572) internal successors, (684), 508 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:56,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 684 transitions. [2021-11-06 14:25:56,307 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 684 transitions. Word has length 28 [2021-11-06 14:25:56,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:25:56,308 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 684 transitions. [2021-11-06 14:25:56,308 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) [2021-11-06 14:25:56,309 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 684 transitions. [2021-11-06 14:25:56,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-06 14:25:56,311 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:25:56,312 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:25:56,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:25:56,313 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:25:56,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:25:56,324 INFO L85 PathProgramCache]: Analyzing trace with hash 503151157, now seen corresponding path program 1 times [2021-11-06 14:25:56,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:25:56,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037109655] [2021-11-06 14:25:56,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:25:56,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:25:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:25:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:25:56,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:25:56,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037109655] [2021-11-06 14:25:56,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037109655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:25:56,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:25:56,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:25:56,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947097146] [2021-11-06 14:25:56,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:25:56,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:25:56,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:25:56,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:25:56,445 INFO L87 Difference]: Start difference. First operand 509 states and 684 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:56,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:25:56,476 INFO L93 Difference]: Finished difference Result 509 states and 684 transitions. [2021-11-06 14:25:56,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:25:56,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-06 14:25:56,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:25:56,479 INFO L225 Difference]: With dead ends: 509 [2021-11-06 14:25:56,479 INFO L226 Difference]: Without dead ends: 507 [2021-11-06 14:25:56,480 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:25:56,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-06 14:25:56,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2021-11-06 14:25:56,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 503 states have (on average 1.3558648111332008) internal successors, (682), 506 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:56,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 682 transitions. [2021-11-06 14:25:56,498 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 682 transitions. Word has length 29 [2021-11-06 14:25:56,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:25:56,499 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 682 transitions. [2021-11-06 14:25:56,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:56,499 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 682 transitions. [2021-11-06 14:25:56,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-06 14:25:56,500 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:25:56,500 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:25:56,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:25:56,501 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:25:56,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:25:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1582184034, now seen corresponding path program 1 times [2021-11-06 14:25:56,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:25:56,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026526392] [2021-11-06 14:25:56,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:25:56,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:25:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:25:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:25:56,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:25:56,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026526392] [2021-11-06 14:25:56,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026526392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:25:56,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:25:56,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:25:56,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87153571] [2021-11-06 14:25:56,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:25:56,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:25:56,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:25:56,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:25:56,599 INFO L87 Difference]: Start difference. First operand 507 states and 682 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:56,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:25:56,617 INFO L93 Difference]: Finished difference Result 507 states and 682 transitions. [2021-11-06 14:25:56,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:25:56,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-06 14:25:56,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:25:56,622 INFO L225 Difference]: With dead ends: 507 [2021-11-06 14:25:56,622 INFO L226 Difference]: Without dead ends: 505 [2021-11-06 14:25:56,623 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:25:56,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-06 14:25:56,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2021-11-06 14:25:56,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 502 states have (on average 1.3545816733067728) internal successors, (680), 504 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 680 transitions. [2021-11-06 14:25:56,645 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 680 transitions. Word has length 30 [2021-11-06 14:25:56,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:25:56,646 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 680 transitions. [2021-11-06 14:25:56,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:56,646 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 680 transitions. [2021-11-06 14:25:56,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-06 14:25:56,647 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:25:56,647 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:25:56,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:25:56,648 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:25:56,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:25:56,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1803065505, now seen corresponding path program 1 times [2021-11-06 14:25:56,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:25:56,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760178701] [2021-11-06 14:25:56,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:25:56,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:25:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:25:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:25:56,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:25:56,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760178701] [2021-11-06 14:25:56,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760178701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:25:56,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:25:56,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:25:56,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694148524] [2021-11-06 14:25:56,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:25:56,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:25:56,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:25:56,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:25:56,741 INFO L87 Difference]: Start difference. First operand 505 states and 680 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:56,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:25:56,809 INFO L93 Difference]: Finished difference Result 1466 states and 1985 transitions. [2021-11-06 14:25:56,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:25:56,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-06 14:25:56,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:25:56,814 INFO L225 Difference]: With dead ends: 1466 [2021-11-06 14:25:56,815 INFO L226 Difference]: Without dead ends: 981 [2021-11-06 14:25:56,818 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:25:56,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2021-11-06 14:25:56,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 978. [2021-11-06 14:25:56,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 975 states have (on average 1.357948717948718) internal successors, (1324), 977 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:56,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1324 transitions. [2021-11-06 14:25:56,872 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1324 transitions. Word has length 31 [2021-11-06 14:25:56,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:25:56,875 INFO L470 AbstractCegarLoop]: Abstraction has 978 states and 1324 transitions. [2021-11-06 14:25:56,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:56,875 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1324 transitions. [2021-11-06 14:25:56,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-06 14:25:56,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:25:56,878 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:25:56,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:25:56,879 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:25:56,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:25:56,880 INFO L85 PathProgramCache]: Analyzing trace with hash -60456504, now seen corresponding path program 1 times [2021-11-06 14:25:56,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:25:56,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077535248] [2021-11-06 14:25:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:25:56,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:25:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:25:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:25:56,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:25:56,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077535248] [2021-11-06 14:25:56,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077535248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:25:56,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:25:56,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:25:56,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124165933] [2021-11-06 14:25:56,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:25:56,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:25:56,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:25:56,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:25:56,984 INFO L87 Difference]: Start difference. First operand 978 states and 1324 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:57,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:25:57,022 INFO L93 Difference]: Finished difference Result 978 states and 1324 transitions. [2021-11-06 14:25:57,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:25:57,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-06 14:25:57,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:25:57,027 INFO L225 Difference]: With dead ends: 978 [2021-11-06 14:25:57,028 INFO L226 Difference]: Without dead ends: 969 [2021-11-06 14:25:57,028 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:25:57,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2021-11-06 14:25:57,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 969. [2021-11-06 14:25:57,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 967 states have (on average 1.3567735263702172) internal successors, (1312), 968 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:57,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1312 transitions. [2021-11-06 14:25:57,087 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1312 transitions. Word has length 32 [2021-11-06 14:25:57,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:25:57,087 INFO L470 AbstractCegarLoop]: Abstraction has 969 states and 1312 transitions. [2021-11-06 14:25:57,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:57,088 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1312 transitions. [2021-11-06 14:25:57,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-06 14:25:57,089 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:25:57,089 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:25:57,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 14:25:57,090 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:25:57,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:25:57,091 INFO L85 PathProgramCache]: Analyzing trace with hash 703031445, now seen corresponding path program 1 times [2021-11-06 14:25:57,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:25:57,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589126556] [2021-11-06 14:25:57,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:25:57,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:25:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:25:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:25:57,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:25:57,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589126556] [2021-11-06 14:25:57,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589126556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:25:57,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:25:57,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:25:57,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61995107] [2021-11-06 14:25:57,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:25:57,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:25:57,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:25:57,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:25:57,215 INFO L87 Difference]: Start difference. First operand 969 states and 1312 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:57,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:25:57,325 INFO L93 Difference]: Finished difference Result 2372 states and 3207 transitions. [2021-11-06 14:25:57,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:25:57,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-06 14:25:57,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:25:57,332 INFO L225 Difference]: With dead ends: 2372 [2021-11-06 14:25:57,333 INFO L226 Difference]: Without dead ends: 1423 [2021-11-06 14:25:57,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:25:57,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2021-11-06 14:25:57,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1415. [2021-11-06 14:25:57,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1413 states have (on average 1.3503184713375795) internal successors, (1908), 1414 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:57,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 1908 transitions. [2021-11-06 14:25:57,404 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 1908 transitions. Word has length 58 [2021-11-06 14:25:57,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:25:57,404 INFO L470 AbstractCegarLoop]: Abstraction has 1415 states and 1908 transitions. [2021-11-06 14:25:57,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:57,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 1908 transitions. [2021-11-06 14:25:57,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 14:25:57,408 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:25:57,409 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:25:57,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 14:25:57,409 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:25:57,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:25:57,410 INFO L85 PathProgramCache]: Analyzing trace with hash 584012738, now seen corresponding path program 1 times [2021-11-06 14:25:57,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:25:57,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980449686] [2021-11-06 14:25:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:25:57,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:25:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:25:57,586 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:25:57,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:25:57,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980449686] [2021-11-06 14:25:57,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980449686] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:25:57,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436183239] [2021-11-06 14:25:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:25:57,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:25:57,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:25:57,591 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) [2021-11-06 14:25:57,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 14:25:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:25:57,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 14:25:57,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:25:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:25:58,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436183239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:25:58,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:25:58,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-06 14:25:58,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194753493] [2021-11-06 14:25:58,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:25:58,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:25:58,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:25:58,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:25:58,188 INFO L87 Difference]: Start difference. First operand 1415 states and 1908 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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) [2021-11-06 14:25:58,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:25:58,446 INFO L93 Difference]: Finished difference Result 4209 states and 5679 transitions. [2021-11-06 14:25:58,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:25:58,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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 76 [2021-11-06 14:25:58,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:25:58,465 INFO L225 Difference]: With dead ends: 4209 [2021-11-06 14:25:58,466 INFO L226 Difference]: Without dead ends: 4201 [2021-11-06 14:25:58,468 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:25:58,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2021-11-06 14:25:58,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 3939. [2021-11-06 14:25:58,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 3937 states have (on average 1.3675387350774701) internal successors, (5384), 3938 states have internal predecessors, (5384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:25:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5384 transitions. [2021-11-06 14:25:58,675 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5384 transitions. Word has length 76 [2021-11-06 14:25:58,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:25:58,675 INFO L470 AbstractCegarLoop]: Abstraction has 3939 states and 5384 transitions. [2021-11-06 14:25:58,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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) [2021-11-06 14:25:58,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5384 transitions. [2021-11-06 14:25:58,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 14:25:58,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:25:58,681 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:25:58,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 14:25:58,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:25:58,900 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:25:58,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:25:58,900 INFO L85 PathProgramCache]: Analyzing trace with hash -427104512, now seen corresponding path program 1 times [2021-11-06 14:25:58,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:25:58,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424514474] [2021-11-06 14:25:58,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:25:58,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:25:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:25:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:25:59,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:25:59,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424514474] [2021-11-06 14:25:59,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424514474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:25:59,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:25:59,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:25:59,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98230866] [2021-11-06 14:25:59,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:25:59,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:25:59,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:25:59,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:25:59,084 INFO L87 Difference]: Start difference. First operand 3939 states and 5384 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2021-11-06 14:25:59,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:25:59,827 INFO L93 Difference]: Finished difference Result 16120 states and 22006 transitions. [2021-11-06 14:25:59,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 14:25:59,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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 76 [2021-11-06 14:25:59,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:25:59,880 INFO L225 Difference]: With dead ends: 16120 [2021-11-06 14:25:59,881 INFO L226 Difference]: Without dead ends: 12201 [2021-11-06 14:25:59,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 14:25:59,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12201 states. [2021-11-06 14:26:00,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12201 to 3975. [2021-11-06 14:26:00,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3975 states, 3973 states have (on average 1.3642084067455325) internal successors, (5420), 3974 states have internal predecessors, (5420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3975 states to 3975 states and 5420 transitions. [2021-11-06 14:26:00,266 INFO L78 Accepts]: Start accepts. Automaton has 3975 states and 5420 transitions. Word has length 76 [2021-11-06 14:26:00,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:00,271 INFO L470 AbstractCegarLoop]: Abstraction has 3975 states and 5420 transitions. [2021-11-06 14:26:00,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 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) [2021-11-06 14:26:00,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3975 states and 5420 transitions. [2021-11-06 14:26:00,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 14:26:00,277 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:00,277 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:00,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 14:26:00,277 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:26:00,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:00,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1353919452, now seen corresponding path program 1 times [2021-11-06 14:26:00,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:00,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027305603] [2021-11-06 14:26:00,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:00,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:26:00,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:00,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027305603] [2021-11-06 14:26:00,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027305603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:00,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:00,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:26:00,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396661771] [2021-11-06 14:26:00,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:26:00,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:00,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:26:00,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:26:00,469 INFO L87 Difference]: Start difference. First operand 3975 states and 5420 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:01,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:01,913 INFO L93 Difference]: Finished difference Result 26420 states and 36494 transitions. [2021-11-06 14:26:01,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 14:26:01,914 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-06 14:26:01,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:01,987 INFO L225 Difference]: With dead ends: 26420 [2021-11-06 14:26:01,987 INFO L226 Difference]: Without dead ends: 22465 [2021-11-06 14:26:02,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-06 14:26:02,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22465 states. [2021-11-06 14:26:02,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22465 to 6509. [2021-11-06 14:26:02,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6509 states, 6507 states have (on average 1.3792838481635161) internal successors, (8975), 6508 states have internal predecessors, (8975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:02,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6509 states to 6509 states and 8975 transitions. [2021-11-06 14:26:02,622 INFO L78 Accepts]: Start accepts. Automaton has 6509 states and 8975 transitions. Word has length 78 [2021-11-06 14:26:02,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:02,622 INFO L470 AbstractCegarLoop]: Abstraction has 6509 states and 8975 transitions. [2021-11-06 14:26:02,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:02,622 INFO L276 IsEmpty]: Start isEmpty. Operand 6509 states and 8975 transitions. [2021-11-06 14:26:02,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-06 14:26:02,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:02,635 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:02,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 14:26:02,635 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:26:02,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:02,636 INFO L85 PathProgramCache]: Analyzing trace with hash 552987206, now seen corresponding path program 1 times [2021-11-06 14:26:02,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:02,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316858224] [2021-11-06 14:26:02,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:02,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 14:26:02,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:02,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316858224] [2021-11-06 14:26:02,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316858224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:02,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:02,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:26:02,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986951265] [2021-11-06 14:26:02,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:26:02,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:02,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:26:02,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:02,706 INFO L87 Difference]: Start difference. First operand 6509 states and 8975 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:03,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:03,269 INFO L93 Difference]: Finished difference Result 15658 states and 21654 transitions. [2021-11-06 14:26:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:26:03,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-06 14:26:03,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:03,296 INFO L225 Difference]: With dead ends: 15658 [2021-11-06 14:26:03,296 INFO L226 Difference]: Without dead ends: 9169 [2021-11-06 14:26:03,309 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:03,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9169 states. [2021-11-06 14:26:03,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9169 to 9111. [2021-11-06 14:26:03,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9111 states, 9109 states have (on average 1.3831375562630366) internal successors, (12599), 9110 states have internal predecessors, (12599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:03,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9111 states to 9111 states and 12599 transitions. [2021-11-06 14:26:03,991 INFO L78 Accepts]: Start accepts. Automaton has 9111 states and 12599 transitions. Word has length 105 [2021-11-06 14:26:03,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:03,992 INFO L470 AbstractCegarLoop]: Abstraction has 9111 states and 12599 transitions. [2021-11-06 14:26:03,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:03,992 INFO L276 IsEmpty]: Start isEmpty. Operand 9111 states and 12599 transitions. [2021-11-06 14:26:04,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-06 14:26:04,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:04,002 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:04,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 14:26:04,003 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:26:04,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:04,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2011077376, now seen corresponding path program 2 times [2021-11-06 14:26:04,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:04,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188482038] [2021-11-06 14:26:04,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:04,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:04,081 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 14:26:04,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:04,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188482038] [2021-11-06 14:26:04,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188482038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:04,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:04,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:26:04,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919089035] [2021-11-06 14:26:04,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:26:04,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:04,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:26:04,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:26:04,084 INFO L87 Difference]: Start difference. First operand 9111 states and 12599 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) [2021-11-06 14:26:05,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:05,056 INFO L93 Difference]: Finished difference Result 34248 states and 47564 transitions. [2021-11-06 14:26:05,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:26:05,057 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 105 [2021-11-06 14:26:05,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:05,139 INFO L225 Difference]: With dead ends: 34248 [2021-11-06 14:26:05,140 INFO L226 Difference]: Without dead ends: 25157 [2021-11-06 14:26:05,163 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:26:05,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25157 states. [2021-11-06 14:26:05,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25157 to 9143. [2021-11-06 14:26:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9143 states, 9141 states have (on average 1.3817963023739197) internal successors, (12631), 9142 states have internal predecessors, (12631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:05,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9143 states to 9143 states and 12631 transitions. [2021-11-06 14:26:05,943 INFO L78 Accepts]: Start accepts. Automaton has 9143 states and 12631 transitions. Word has length 105 [2021-11-06 14:26:05,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:05,944 INFO L470 AbstractCegarLoop]: Abstraction has 9143 states and 12631 transitions. [2021-11-06 14:26:05,944 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) [2021-11-06 14:26:05,945 INFO L276 IsEmpty]: Start isEmpty. Operand 9143 states and 12631 transitions. [2021-11-06 14:26:05,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 14:26:05,955 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:05,955 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-06 14:26:05,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 14:26:05,956 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:26:05,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:05,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1186647706, now seen corresponding path program 1 times [2021-11-06 14:26:05,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:05,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041153940] [2021-11-06 14:26:05,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:05,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:06,071 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 14:26:06,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:06,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041153940] [2021-11-06 14:26:06,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041153940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:06,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:06,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:26:06,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868257964] [2021-11-06 14:26:06,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:26:06,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:06,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:26:06,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:26:06,074 INFO L87 Difference]: Start difference. First operand 9143 states and 12631 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:07,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:07,774 INFO L93 Difference]: Finished difference Result 34692 states and 48083 transitions. [2021-11-06 14:26:07,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:26:07,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 106 [2021-11-06 14:26:07,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:07,863 INFO L225 Difference]: With dead ends: 34692 [2021-11-06 14:26:07,864 INFO L226 Difference]: Without dead ends: 30107 [2021-11-06 14:26:07,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:26:07,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30107 states. [2021-11-06 14:26:08,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30107 to 9191. [2021-11-06 14:26:08,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9191 states, 9189 states have (on average 1.379801937098705) internal successors, (12679), 9190 states have internal predecessors, (12679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:08,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9191 states to 9191 states and 12679 transitions. [2021-11-06 14:26:08,818 INFO L78 Accepts]: Start accepts. Automaton has 9191 states and 12679 transitions. Word has length 106 [2021-11-06 14:26:08,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:08,818 INFO L470 AbstractCegarLoop]: Abstraction has 9191 states and 12679 transitions. [2021-11-06 14:26:08,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:08,818 INFO L276 IsEmpty]: Start isEmpty. Operand 9191 states and 12679 transitions. [2021-11-06 14:26:08,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 14:26:08,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:08,828 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:08,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 14:26:08,829 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:26:08,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:08,830 INFO L85 PathProgramCache]: Analyzing trace with hash 409920875, now seen corresponding path program 1 times [2021-11-06 14:26:08,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:08,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229515861] [2021-11-06 14:26:08,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:08,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 14:26:08,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:08,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229515861] [2021-11-06 14:26:08,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229515861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:08,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:08,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:26:08,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297432542] [2021-11-06 14:26:08,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:26:08,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:08,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:26:08,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:26:08,954 INFO L87 Difference]: Start difference. First operand 9191 states and 12679 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:09,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:09,633 INFO L93 Difference]: Finished difference Result 13777 states and 19028 transitions. [2021-11-06 14:26:09,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:26:09,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-06 14:26:09,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:09,665 INFO L225 Difference]: With dead ends: 13777 [2021-11-06 14:26:09,665 INFO L226 Difference]: Without dead ends: 13775 [2021-11-06 14:26:09,674 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:26:09,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13775 states. [2021-11-06 14:26:10,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13775 to 13765. [2021-11-06 14:26:10,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13765 states, 13763 states have (on average 1.3810215795974714) internal successors, (19007), 13764 states have internal predecessors, (19007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:10,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13765 states to 13765 states and 19007 transitions. [2021-11-06 14:26:10,551 INFO L78 Accepts]: Start accepts. Automaton has 13765 states and 19007 transitions. Word has length 108 [2021-11-06 14:26:10,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:10,552 INFO L470 AbstractCegarLoop]: Abstraction has 13765 states and 19007 transitions. [2021-11-06 14:26:10,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:10,552 INFO L276 IsEmpty]: Start isEmpty. Operand 13765 states and 19007 transitions. [2021-11-06 14:26:10,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 14:26:10,562 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:10,563 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:10,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 14:26:10,563 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:26:10,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:10,564 INFO L85 PathProgramCache]: Analyzing trace with hash 550469485, now seen corresponding path program 1 times [2021-11-06 14:26:10,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:10,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563664687] [2021-11-06 14:26:10,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:10,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 14:26:10,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:10,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563664687] [2021-11-06 14:26:10,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563664687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:10,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:10,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 14:26:10,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463706092] [2021-11-06 14:26:10,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 14:26:10,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:10,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 14:26:10,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:26:10,696 INFO L87 Difference]: Start difference. First operand 13765 states and 19007 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:13,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:13,067 INFO L93 Difference]: Finished difference Result 57851 states and 80196 transitions. [2021-11-06 14:26:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 14:26:13,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-06 14:26:13,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:13,153 INFO L225 Difference]: With dead ends: 57851 [2021-11-06 14:26:13,153 INFO L226 Difference]: Without dead ends: 44106 [2021-11-06 14:26:13,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-06 14:26:13,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44106 states. [2021-11-06 14:26:14,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44106 to 13116. [2021-11-06 14:26:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13116 states, 13114 states have (on average 1.375171572365411) internal successors, (18034), 13115 states have internal predecessors, (18034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:14,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13116 states to 13116 states and 18034 transitions. [2021-11-06 14:26:14,359 INFO L78 Accepts]: Start accepts. Automaton has 13116 states and 18034 transitions. Word has length 108 [2021-11-06 14:26:14,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:14,359 INFO L470 AbstractCegarLoop]: Abstraction has 13116 states and 18034 transitions. [2021-11-06 14:26:14,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:14,360 INFO L276 IsEmpty]: Start isEmpty. Operand 13116 states and 18034 transitions. [2021-11-06 14:26:14,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-06 14:26:14,371 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:14,371 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:14,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 14:26:14,371 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:26:14,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:14,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1231865512, now seen corresponding path program 1 times [2021-11-06 14:26:14,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:14,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175880137] [2021-11-06 14:26:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:14,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 14:26:14,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:14,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175880137] [2021-11-06 14:26:14,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175880137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:14,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:14,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:26:14,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733095367] [2021-11-06 14:26:14,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:26:14,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:14,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:26:14,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:14,474 INFO L87 Difference]: Start difference. First operand 13116 states and 18034 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:15,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:15,158 INFO L93 Difference]: Finished difference Result 20020 states and 27622 transitions. [2021-11-06 14:26:15,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:26:15,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 112 [2021-11-06 14:26:15,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:15,169 INFO L225 Difference]: With dead ends: 20020 [2021-11-06 14:26:15,169 INFO L226 Difference]: Without dead ends: 6075 [2021-11-06 14:26:15,186 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:15,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6075 states. [2021-11-06 14:26:15,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6075 to 5043. [2021-11-06 14:26:15,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5043 states, 5041 states have (on average 1.360245982939893) internal successors, (6857), 5042 states have internal predecessors, (6857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:15,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5043 states to 5043 states and 6857 transitions. [2021-11-06 14:26:15,578 INFO L78 Accepts]: Start accepts. Automaton has 5043 states and 6857 transitions. Word has length 112 [2021-11-06 14:26:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:15,579 INFO L470 AbstractCegarLoop]: Abstraction has 5043 states and 6857 transitions. [2021-11-06 14:26:15,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 5043 states and 6857 transitions. [2021-11-06 14:26:15,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-06 14:26:15,586 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:15,586 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 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] [2021-11-06 14:26:15,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 14:26:15,587 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:26:15,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:15,587 INFO L85 PathProgramCache]: Analyzing trace with hash -601777007, now seen corresponding path program 1 times [2021-11-06 14:26:15,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:15,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529176052] [2021-11-06 14:26:15,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:15,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:15,725 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 14:26:15,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:15,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529176052] [2021-11-06 14:26:15,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529176052] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:26:15,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306205998] [2021-11-06 14:26:15,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:15,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:26:15,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:26:15,732 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) [2021-11-06 14:26:15,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 14:26:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:16,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1530 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 14:26:16,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:26:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 14:26:16,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306205998] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:26:16,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:26:16,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-06 14:26:16,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970606913] [2021-11-06 14:26:16,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:26:16,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:16,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:26:16,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:26:16,501 INFO L87 Difference]: Start difference. First operand 5043 states and 6857 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:17,485 INFO L93 Difference]: Finished difference Result 13877 states and 18829 transitions. [2021-11-06 14:26:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 14:26:17,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 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 114 [2021-11-06 14:26:17,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:17,512 INFO L225 Difference]: With dead ends: 13877 [2021-11-06 14:26:17,513 INFO L226 Difference]: Without dead ends: 13839 [2021-11-06 14:26:17,519 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:26:17,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13839 states. [2021-11-06 14:26:18,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13839 to 6833. [2021-11-06 14:26:18,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6833 states, 6831 states have (on average 1.3567559654516177) internal successors, (9268), 6832 states have internal predecessors, (9268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:18,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6833 states to 6833 states and 9268 transitions. [2021-11-06 14:26:18,073 INFO L78 Accepts]: Start accepts. Automaton has 6833 states and 9268 transitions. Word has length 114 [2021-11-06 14:26:18,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:18,074 INFO L470 AbstractCegarLoop]: Abstraction has 6833 states and 9268 transitions. [2021-11-06 14:26:18,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:18,074 INFO L276 IsEmpty]: Start isEmpty. Operand 6833 states and 9268 transitions. [2021-11-06 14:26:18,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-06 14:26:18,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:18,084 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 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] [2021-11-06 14:26:18,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 14:26:18,294 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,SelfDestructingSolverStorable16 [2021-11-06 14:26:18,295 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:26:18,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:18,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1887751955, now seen corresponding path program 1 times [2021-11-06 14:26:18,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:18,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003380127] [2021-11-06 14:26:18,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:18,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:26:18,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:18,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003380127] [2021-11-06 14:26:18,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003380127] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:26:18,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950787544] [2021-11-06 14:26:18,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:18,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:26:18,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:26:18,434 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) [2021-11-06 14:26:18,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 14:26:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:18,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 1525 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 14:26:18,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:26:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 14:26:19,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950787544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:19,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:26:19,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-06 14:26:19,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684193228] [2021-11-06 14:26:19,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:26:19,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:19,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:26:19,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:26:19,228 INFO L87 Difference]: Start difference. First operand 6833 states and 9268 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:20,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:20,220 INFO L93 Difference]: Finished difference Result 15163 states and 20788 transitions. [2021-11-06 14:26:20,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:26:20,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 114 [2021-11-06 14:26:20,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:20,235 INFO L225 Difference]: With dead ends: 15163 [2021-11-06 14:26:20,235 INFO L226 Difference]: Without dead ends: 9107 [2021-11-06 14:26:20,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:26:20,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9107 states. [2021-11-06 14:26:20,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9107 to 8702. [2021-11-06 14:26:20,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8702 states, 8700 states have (on average 1.3664367816091954) internal successors, (11888), 8701 states have internal predecessors, (11888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 11888 transitions. [2021-11-06 14:26:20,951 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 11888 transitions. Word has length 114 [2021-11-06 14:26:20,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:20,951 INFO L470 AbstractCegarLoop]: Abstraction has 8702 states and 11888 transitions. [2021-11-06 14:26:20,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:20,952 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 11888 transitions. [2021-11-06 14:26:20,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-06 14:26:20,960 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:20,961 INFO L513 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:20,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 14:26:21,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-06 14:26:21,176 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:26:21,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:21,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1795119650, now seen corresponding path program 1 times [2021-11-06 14:26:21,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:21,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903557402] [2021-11-06 14:26:21,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:21,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:21,318 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:26:21,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:21,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903557402] [2021-11-06 14:26:21,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903557402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:21,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:21,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:26:21,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539476119] [2021-11-06 14:26:21,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:26:21,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:21,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:26:21,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:21,322 INFO L87 Difference]: Start difference. First operand 8702 states and 11888 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:22,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:22,322 INFO L93 Difference]: Finished difference Result 20889 states and 28929 transitions. [2021-11-06 14:26:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:26:22,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-06 14:26:22,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:22,342 INFO L225 Difference]: With dead ends: 20889 [2021-11-06 14:26:22,342 INFO L226 Difference]: Without dead ends: 12207 [2021-11-06 14:26:22,356 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:22,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12207 states. [2021-11-06 14:26:23,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12207 to 12190. [2021-11-06 14:26:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12190 states, 12188 states have (on average 1.3725795864785035) internal successors, (16729), 12189 states have internal predecessors, (16729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12190 states to 12190 states and 16729 transitions. [2021-11-06 14:26:23,161 INFO L78 Accepts]: Start accepts. Automaton has 12190 states and 16729 transitions. Word has length 123 [2021-11-06 14:26:23,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:23,161 INFO L470 AbstractCegarLoop]: Abstraction has 12190 states and 16729 transitions. [2021-11-06 14:26:23,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:23,162 INFO L276 IsEmpty]: Start isEmpty. Operand 12190 states and 16729 transitions. [2021-11-06 14:26:23,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-06 14:26:23,172 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:23,173 INFO L513 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:23,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 14:26:23,173 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:26:23,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:23,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1022698662, now seen corresponding path program 1 times [2021-11-06 14:26:23,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:23,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198482059] [2021-11-06 14:26:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:23,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 14:26:23,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:23,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198482059] [2021-11-06 14:26:23,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198482059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:23,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:23,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:26:23,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040464563] [2021-11-06 14:26:23,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:26:23,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:23,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:26:23,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:26:23,300 INFO L87 Difference]: Start difference. First operand 12190 states and 16729 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:24,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:24,913 INFO L93 Difference]: Finished difference Result 33108 states and 45677 transitions. [2021-11-06 14:26:24,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:26:24,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 123 [2021-11-06 14:26:24,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:24,946 INFO L225 Difference]: With dead ends: 33108 [2021-11-06 14:26:24,946 INFO L226 Difference]: Without dead ends: 20826 [2021-11-06 14:26:24,961 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:26:24,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20826 states. [2021-11-06 14:26:25,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20826 to 12190. [2021-11-06 14:26:25,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12190 states, 12188 states have (on average 1.3679849031834592) internal successors, (16673), 12189 states have internal predecessors, (16673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:25,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12190 states to 12190 states and 16673 transitions. [2021-11-06 14:26:25,822 INFO L78 Accepts]: Start accepts. Automaton has 12190 states and 16673 transitions. Word has length 123 [2021-11-06 14:26:25,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:25,823 INFO L470 AbstractCegarLoop]: Abstraction has 12190 states and 16673 transitions. [2021-11-06 14:26:25,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:25,823 INFO L276 IsEmpty]: Start isEmpty. Operand 12190 states and 16673 transitions. [2021-11-06 14:26:25,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 14:26:25,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:25,831 INFO L513 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:25,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 14:26:25,832 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:26:25,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:25,833 INFO L85 PathProgramCache]: Analyzing trace with hash 655994454, now seen corresponding path program 1 times [2021-11-06 14:26:25,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:25,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523830328] [2021-11-06 14:26:25,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:25,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:25,977 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 14:26:25,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:25,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523830328] [2021-11-06 14:26:25,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523830328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:25,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:25,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 14:26:25,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135069629] [2021-11-06 14:26:25,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 14:26:25,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:25,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 14:26:25,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:26:25,979 INFO L87 Difference]: Start difference. First operand 12190 states and 16673 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:30,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:30,678 INFO L93 Difference]: Finished difference Result 80913 states and 113106 transitions. [2021-11-06 14:26:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 14:26:30,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-06 14:26:30,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:30,816 INFO L225 Difference]: With dead ends: 80913 [2021-11-06 14:26:30,816 INFO L226 Difference]: Without dead ends: 68743 [2021-11-06 14:26:30,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-06 14:26:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68743 states. [2021-11-06 14:26:32,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68743 to 12470. [2021-11-06 14:26:32,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12470 states, 12468 states have (on average 1.359720885466795) internal successors, (16953), 12469 states have internal predecessors, (16953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12470 states to 12470 states and 16953 transitions. [2021-11-06 14:26:32,202 INFO L78 Accepts]: Start accepts. Automaton has 12470 states and 16953 transitions. Word has length 125 [2021-11-06 14:26:32,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:32,202 INFO L470 AbstractCegarLoop]: Abstraction has 12470 states and 16953 transitions. [2021-11-06 14:26:32,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:32,203 INFO L276 IsEmpty]: Start isEmpty. Operand 12470 states and 16953 transitions. [2021-11-06 14:26:32,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-06 14:26:32,210 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:32,211 INFO L513 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:32,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 14:26:32,211 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:26:32,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:32,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1478219322, now seen corresponding path program 1 times [2021-11-06 14:26:32,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:32,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141955276] [2021-11-06 14:26:32,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:32,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 14:26:32,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:32,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141955276] [2021-11-06 14:26:32,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141955276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:32,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:32,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:26:32,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183602685] [2021-11-06 14:26:32,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:26:32,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:32,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:26:32,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:32,333 INFO L87 Difference]: Start difference. First operand 12470 states and 16953 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:33,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:33,543 INFO L93 Difference]: Finished difference Result 24922 states and 33885 transitions. [2021-11-06 14:26:33,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:26:33,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 127 [2021-11-06 14:26:33,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:33,569 INFO L225 Difference]: With dead ends: 24922 [2021-11-06 14:26:33,570 INFO L226 Difference]: Without dead ends: 12471 [2021-11-06 14:26:33,582 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:33,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12471 states. [2021-11-06 14:26:34,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12471 to 12471. [2021-11-06 14:26:34,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12471 states, 12469 states have (on average 1.3596920362498996) internal successors, (16954), 12470 states have internal predecessors, (16954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:34,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12471 states to 12471 states and 16954 transitions. [2021-11-06 14:26:34,560 INFO L78 Accepts]: Start accepts. Automaton has 12471 states and 16954 transitions. Word has length 127 [2021-11-06 14:26:34,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:34,560 INFO L470 AbstractCegarLoop]: Abstraction has 12471 states and 16954 transitions. [2021-11-06 14:26:34,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:34,560 INFO L276 IsEmpty]: Start isEmpty. Operand 12471 states and 16954 transitions. [2021-11-06 14:26:34,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-06 14:26:34,568 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:34,568 INFO L513 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:34,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 14:26:34,568 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:26:34,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:34,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1234380126, now seen corresponding path program 1 times [2021-11-06 14:26:34,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:34,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601806353] [2021-11-06 14:26:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:34,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:34,680 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 14:26:34,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:34,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601806353] [2021-11-06 14:26:34,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601806353] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:26:34,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3102421] [2021-11-06 14:26:34,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:34,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:26:34,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:26:34,682 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) [2021-11-06 14:26:34,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 14:26:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:35,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-06 14:26:35,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:26:35,557 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 14:26:35,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3102421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:35,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:26:35,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2021-11-06 14:26:35,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223826579] [2021-11-06 14:26:35,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 14:26:35,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:35,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 14:26:35,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-06 14:26:35,559 INFO L87 Difference]: Start difference. First operand 12471 states and 16954 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:39,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:39,204 INFO L93 Difference]: Finished difference Result 46345 states and 62957 transitions. [2021-11-06 14:26:39,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 14:26:39,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 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 128 [2021-11-06 14:26:39,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:39,274 INFO L225 Difference]: With dead ends: 46345 [2021-11-06 14:26:39,274 INFO L226 Difference]: Without dead ends: 37964 [2021-11-06 14:26:39,302 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-11-06 14:26:39,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37964 states. [2021-11-06 14:26:40,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37964 to 12499. [2021-11-06 14:26:40,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12499 states, 12497 states have (on average 1.3569656717612226) internal successors, (16958), 12498 states have internal predecessors, (16958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:40,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12499 states to 12499 states and 16958 transitions. [2021-11-06 14:26:40,704 INFO L78 Accepts]: Start accepts. Automaton has 12499 states and 16958 transitions. Word has length 128 [2021-11-06 14:26:40,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:40,704 INFO L470 AbstractCegarLoop]: Abstraction has 12499 states and 16958 transitions. [2021-11-06 14:26:40,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:40,704 INFO L276 IsEmpty]: Start isEmpty. Operand 12499 states and 16958 transitions. [2021-11-06 14:26:40,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-06 14:26:40,714 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:40,714 INFO L513 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:40,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-06 14:26:40,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:26:40,915 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:26:40,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:40,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1251604004, now seen corresponding path program 1 times [2021-11-06 14:26:40,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:40,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796946732] [2021-11-06 14:26:40,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:40,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 14:26:41,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:41,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796946732] [2021-11-06 14:26:41,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796946732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:41,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:41,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:26:41,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571690728] [2021-11-06 14:26:41,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:26:41,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:41,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:26:41,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:41,042 INFO L87 Difference]: Start difference. First operand 12499 states and 16958 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 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) [2021-11-06 14:26:42,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:42,327 INFO L93 Difference]: Finished difference Result 20985 states and 28499 transitions. [2021-11-06 14:26:42,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:26:42,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 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 144 [2021-11-06 14:26:42,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:42,349 INFO L225 Difference]: With dead ends: 20985 [2021-11-06 14:26:42,349 INFO L226 Difference]: Without dead ends: 12576 [2021-11-06 14:26:42,361 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:42,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12576 states. [2021-11-06 14:26:43,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12576 to 12433. [2021-11-06 14:26:43,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12433 states, 12431 states have (on average 1.3535516048588208) internal successors, (16826), 12432 states have internal predecessors, (16826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:43,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12433 states to 12433 states and 16826 transitions. [2021-11-06 14:26:43,762 INFO L78 Accepts]: Start accepts. Automaton has 12433 states and 16826 transitions. Word has length 144 [2021-11-06 14:26:43,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:43,763 INFO L470 AbstractCegarLoop]: Abstraction has 12433 states and 16826 transitions. [2021-11-06 14:26:43,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 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) [2021-11-06 14:26:43,763 INFO L276 IsEmpty]: Start isEmpty. Operand 12433 states and 16826 transitions. [2021-11-06 14:26:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-06 14:26:43,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:43,772 INFO L513 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:43,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-06 14:26:43,772 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:26:43,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:43,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1644821028, now seen corresponding path program 1 times [2021-11-06 14:26:43,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:43,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361698635] [2021-11-06 14:26:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:43,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 14:26:43,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:43,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361698635] [2021-11-06 14:26:43,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361698635] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:26:43,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720468968] [2021-11-06 14:26:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:43,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:26:43,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:26:43,909 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) [2021-11-06 14:26:43,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 14:26:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:44,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 1884 conjuncts, 107 conjunts are in the unsatisfiable core [2021-11-06 14:26:44,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:26:44,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 14:26:45,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-06 14:26:45,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-06 14:26:45,847 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:26:45,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720468968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:45,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:26:45,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [4] total 20 [2021-11-06 14:26:45,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107041187] [2021-11-06 14:26:45,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-06 14:26:45,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:45,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-06 14:26:45,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-11-06 14:26:45,849 INFO L87 Difference]: Start difference. First operand 12433 states and 16826 transitions. Second operand has 18 states, 18 states have (on average 7.944444444444445) internal successors, (143), 18 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:06,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:27:06,297 INFO L93 Difference]: Finished difference Result 140911 states and 198912 transitions. [2021-11-06 14:27:06,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2021-11-06 14:27:06,298 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.944444444444445) internal successors, (143), 18 states have internal predecessors, (143), 0 states have call successors, (0), 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 [2021-11-06 14:27:06,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:27:06,664 INFO L225 Difference]: With dead ends: 140911 [2021-11-06 14:27:06,664 INFO L226 Difference]: Without dead ends: 129609 [2021-11-06 14:27:06,720 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19812 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=6831, Invalid=41789, Unknown=0, NotChecked=0, Total=48620 [2021-11-06 14:27:06,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129609 states. [2021-11-06 14:27:10,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129609 to 23464. [2021-11-06 14:27:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23464 states, 23462 states have (on average 1.3588781860028982) internal successors, (31882), 23463 states have internal predecessors, (31882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:10,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23464 states to 23464 states and 31882 transitions. [2021-11-06 14:27:10,161 INFO L78 Accepts]: Start accepts. Automaton has 23464 states and 31882 transitions. Word has length 144 [2021-11-06 14:27:10,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:27:10,161 INFO L470 AbstractCegarLoop]: Abstraction has 23464 states and 31882 transitions. [2021-11-06 14:27:10,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.944444444444445) internal successors, (143), 18 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:10,162 INFO L276 IsEmpty]: Start isEmpty. Operand 23464 states and 31882 transitions. [2021-11-06 14:27:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-06 14:27:10,179 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:27:10,179 INFO L513 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:27:10,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 14:27:10,391 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 [2021-11-06 14:27:10,392 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:27:10,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:27:10,392 INFO L85 PathProgramCache]: Analyzing trace with hash -514074078, now seen corresponding path program 1 times [2021-11-06 14:27:10,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:27:10,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260974760] [2021-11-06 14:27:10,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:27:10,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:27:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:27:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 14:27:10,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:27:10,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260974760] [2021-11-06 14:27:10,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260974760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:27:10,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:27:10,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:27:10,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422753183] [2021-11-06 14:27:10,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:27:10,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:27:10,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:27:10,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:27:10,467 INFO L87 Difference]: Start difference. First operand 23464 states and 31882 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 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) [2021-11-06 14:27:12,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:27:12,443 INFO L93 Difference]: Finished difference Result 37069 states and 50533 transitions. [2021-11-06 14:27:12,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:27:12,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 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 144 [2021-11-06 14:27:12,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:27:12,550 INFO L225 Difference]: With dead ends: 37069 [2021-11-06 14:27:12,550 INFO L226 Difference]: Without dead ends: 13148 [2021-11-06 14:27:12,568 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:27:12,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13148 states. [2021-11-06 14:27:14,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13148 to 11247. [2021-11-06 14:27:14,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11247 states, 11245 states have (on average 1.350022232103157) internal successors, (15181), 11246 states have internal predecessors, (15181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:14,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11247 states to 11247 states and 15181 transitions. [2021-11-06 14:27:14,194 INFO L78 Accepts]: Start accepts. Automaton has 11247 states and 15181 transitions. Word has length 144 [2021-11-06 14:27:14,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:27:14,194 INFO L470 AbstractCegarLoop]: Abstraction has 11247 states and 15181 transitions. [2021-11-06 14:27:14,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 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) [2021-11-06 14:27:14,195 INFO L276 IsEmpty]: Start isEmpty. Operand 11247 states and 15181 transitions. [2021-11-06 14:27:14,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-06 14:27:14,204 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:27:14,204 INFO L513 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:27:14,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-06 14:27:14,205 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:27:14,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:27:14,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1368618196, now seen corresponding path program 1 times [2021-11-06 14:27:14,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:27:14,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589462169] [2021-11-06 14:27:14,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:27:14,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:27:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:27:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-06 14:27:14,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:27:14,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589462169] [2021-11-06 14:27:14,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589462169] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:27:14,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210524239] [2021-11-06 14:27:14,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:27:14,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:27:14,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:27:14,350 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) [2021-11-06 14:27:14,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 14:27:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:27:15,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 14:27:15,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:27:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 14:27:15,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210524239] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:27:15,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:27:15,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-11-06 14:27:15,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707085636] [2021-11-06 14:27:15,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 14:27:15,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:27:15,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 14:27:15,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:27:15,332 INFO L87 Difference]: Start difference. First operand 11247 states and 15181 transitions. Second operand has 7 states, 7 states have (on average 31.571428571428573) internal successors, (221), 7 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:19,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:27:19,129 INFO L93 Difference]: Finished difference Result 36975 states and 49845 transitions. [2021-11-06 14:27:19,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 14:27:19,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.571428571428573) internal successors, (221), 7 states have internal predecessors, (221), 0 states have call successors, (0), 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 145 [2021-11-06 14:27:19,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:27:19,173 INFO L225 Difference]: With dead ends: 36975 [2021-11-06 14:27:19,173 INFO L226 Difference]: Without dead ends: 25748 [2021-11-06 14:27:19,184 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-06 14:27:19,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25748 states. [2021-11-06 14:27:20,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25748 to 11272. [2021-11-06 14:27:20,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11272 states, 11270 states have (on average 1.3503105590062112) internal successors, (15218), 11271 states have internal predecessors, (15218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11272 states to 11272 states and 15218 transitions. [2021-11-06 14:27:20,649 INFO L78 Accepts]: Start accepts. Automaton has 11272 states and 15218 transitions. Word has length 145 [2021-11-06 14:27:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:27:20,649 INFO L470 AbstractCegarLoop]: Abstraction has 11272 states and 15218 transitions. [2021-11-06 14:27:20,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.571428571428573) internal successors, (221), 7 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:20,649 INFO L276 IsEmpty]: Start isEmpty. Operand 11272 states and 15218 transitions. [2021-11-06 14:27:20,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-06 14:27:20,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:27:20,657 INFO L513 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:27:20,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 14:27:20,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-06 14:27:20,859 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:27:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:27:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1644122802, now seen corresponding path program 1 times [2021-11-06 14:27:20,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:27:20,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423191162] [2021-11-06 14:27:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:27:20,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:27:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:27:21,012 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-06 14:27:21,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:27:21,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423191162] [2021-11-06 14:27:21,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423191162] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:27:21,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401208066] [2021-11-06 14:27:21,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:27:21,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:27:21,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:27:21,014 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) [2021-11-06 14:27:21,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 14:27:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:27:21,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 14:27:21,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:27:22,031 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 14:27:22,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401208066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:27:22,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:27:22,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-11-06 14:27:22,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783891276] [2021-11-06 14:27:22,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:27:22,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:27:22,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:27:22,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:27:22,033 INFO L87 Difference]: Start difference. First operand 11272 states and 15218 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 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) [2021-11-06 14:27:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:27:24,427 INFO L93 Difference]: Finished difference Result 26082 states and 35190 transitions. [2021-11-06 14:27:24,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:27:24,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 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 146 [2021-11-06 14:27:24,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:27:24,455 INFO L225 Difference]: With dead ends: 26082 [2021-11-06 14:27:24,455 INFO L226 Difference]: Without dead ends: 18341 [2021-11-06 14:27:24,467 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-06 14:27:24,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18341 states. [2021-11-06 14:27:25,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18341 to 11284. [2021-11-06 14:27:25,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11284 states, 11282 states have (on average 1.3488743130650593) internal successors, (15218), 11283 states have internal predecessors, (15218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:25,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11284 states to 11284 states and 15218 transitions. [2021-11-06 14:27:25,938 INFO L78 Accepts]: Start accepts. Automaton has 11284 states and 15218 transitions. Word has length 146 [2021-11-06 14:27:25,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:27:25,938 INFO L470 AbstractCegarLoop]: Abstraction has 11284 states and 15218 transitions. [2021-11-06 14:27:25,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 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) [2021-11-06 14:27:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 11284 states and 15218 transitions. [2021-11-06 14:27:25,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-06 14:27:25,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:27:25,949 INFO L513 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:27:25,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 14:27:26,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:27:26,158 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:27:26,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:27:26,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1818887626, now seen corresponding path program 1 times [2021-11-06 14:27:26,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:27:26,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363591279] [2021-11-06 14:27:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:27:26,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:27:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:27:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-06 14:27:26,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:27:26,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363591279] [2021-11-06 14:27:26,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363591279] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:27:26,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409606787] [2021-11-06 14:27:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:27:26,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:27:26,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:27:26,335 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) [2021-11-06 14:27:26,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 14:27:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:27:27,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-06 14:27:27,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:27:28,138 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 14:27:28,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409606787] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:27:28,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:27:28,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2021-11-06 14:27:28,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167084801] [2021-11-06 14:27:28,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 14:27:28,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:27:28,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 14:27:28,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-06 14:27:28,140 INFO L87 Difference]: Start difference. First operand 11284 states and 15218 transitions. Second operand has 10 states, 10 states have (on average 22.3) internal successors, (223), 10 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:29,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:27:29,807 INFO L93 Difference]: Finished difference Result 22250 states and 29994 transitions. [2021-11-06 14:27:29,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 14:27:29,807 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.3) internal successors, (223), 10 states have internal predecessors, (223), 0 states have call successors, (0), 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 147 [2021-11-06 14:27:29,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:27:29,823 INFO L225 Difference]: With dead ends: 22250 [2021-11-06 14:27:29,824 INFO L226 Difference]: Without dead ends: 10987 [2021-11-06 14:27:29,837 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-06 14:27:29,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10987 states. [2021-11-06 14:27:31,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10987 to 10589. [2021-11-06 14:27:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10589 states, 10587 states have (on average 1.3479739302918674) internal successors, (14271), 10588 states have internal predecessors, (14271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:31,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10589 states to 10589 states and 14271 transitions. [2021-11-06 14:27:31,297 INFO L78 Accepts]: Start accepts. Automaton has 10589 states and 14271 transitions. Word has length 147 [2021-11-06 14:27:31,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:27:31,297 INFO L470 AbstractCegarLoop]: Abstraction has 10589 states and 14271 transitions. [2021-11-06 14:27:31,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.3) internal successors, (223), 10 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:31,298 INFO L276 IsEmpty]: Start isEmpty. Operand 10589 states and 14271 transitions. [2021-11-06 14:27:31,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-06 14:27:31,307 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:27:31,307 INFO L513 BasicCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:27:31,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 14:27:31,533 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,SelfDestructingSolverStorable28 [2021-11-06 14:27:31,534 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:27:31,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:27:31,534 INFO L85 PathProgramCache]: Analyzing trace with hash -285697622, now seen corresponding path program 2 times [2021-11-06 14:27:31,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:27:31,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420465837] [2021-11-06 14:27:31,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:27:31,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:27:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:27:31,716 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-06 14:27:31,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:27:31,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420465837] [2021-11-06 14:27:31,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420465837] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:27:31,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806691417] [2021-11-06 14:27:31,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 14:27:31,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:27:31,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:27:31,719 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) [2021-11-06 14:27:31,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 14:27:33,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 14:27:33,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:27:33,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1970 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-06 14:27:33,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:27:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 14:27:33,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806691417] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:27:33,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:27:33,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 13 [2021-11-06 14:27:33,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160039005] [2021-11-06 14:27:33,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 14:27:33,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:27:33,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 14:27:33,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-06 14:27:33,703 INFO L87 Difference]: Start difference. First operand 10589 states and 14271 transitions. Second operand has 13 states, 13 states have (on average 17.384615384615383) internal successors, (226), 13 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:35,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:27:35,506 INFO L93 Difference]: Finished difference Result 21471 states and 28939 transitions. [2021-11-06 14:27:35,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 14:27:35,507 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.384615384615383) internal successors, (226), 13 states have internal predecessors, (226), 0 states have call successors, (0), 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 149 [2021-11-06 14:27:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:27:35,521 INFO L225 Difference]: With dead ends: 21471 [2021-11-06 14:27:35,521 INFO L226 Difference]: Without dead ends: 10904 [2021-11-06 14:27:35,528 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-11-06 14:27:35,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10904 states. [2021-11-06 14:27:36,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10904 to 10602. [2021-11-06 14:27:36,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10602 states, 10600 states have (on average 1.3475471698113208) internal successors, (14284), 10601 states have internal predecessors, (14284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:36,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10602 states to 10602 states and 14284 transitions. [2021-11-06 14:27:36,857 INFO L78 Accepts]: Start accepts. Automaton has 10602 states and 14284 transitions. Word has length 149 [2021-11-06 14:27:36,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:27:36,858 INFO L470 AbstractCegarLoop]: Abstraction has 10602 states and 14284 transitions. [2021-11-06 14:27:36,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.384615384615383) internal successors, (226), 13 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:36,858 INFO L276 IsEmpty]: Start isEmpty. Operand 10602 states and 14284 transitions. [2021-11-06 14:27:36,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-06 14:27:36,864 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:27:36,864 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:27:36,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-06 14:27:37,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:27:37,065 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:27:37,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:27:37,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1517059658, now seen corresponding path program 3 times [2021-11-06 14:27:37,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:27:37,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714934551] [2021-11-06 14:27:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:27:37,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:27:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:27:37,318 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-06 14:27:37,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:27:37,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714934551] [2021-11-06 14:27:37,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714934551] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:27:37,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450442572] [2021-11-06 14:27:37,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 14:27:37,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:27:37,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:27:37,320 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) [2021-11-06 14:27:37,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 14:27:38,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-06 14:27:38,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:27:38,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-06 14:27:38,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:27:39,240 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-06 14:27:39,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450442572] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:27:39,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:27:39,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-11-06 14:27:39,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708452970] [2021-11-06 14:27:39,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 14:27:39,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:27:39,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 14:27:39,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-06 14:27:39,241 INFO L87 Difference]: Start difference. First operand 10602 states and 14284 transitions. Second operand has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 11 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:41,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:27:41,069 INFO L93 Difference]: Finished difference Result 18003 states and 24259 transitions. [2021-11-06 14:27:41,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 14:27:41,069 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 11 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-06 14:27:41,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:27:41,083 INFO L225 Difference]: With dead ends: 18003 [2021-11-06 14:27:41,083 INFO L226 Difference]: Without dead ends: 10934 [2021-11-06 14:27:41,089 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-11-06 14:27:41,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10934 states. [2021-11-06 14:27:42,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10934 to 10626. [2021-11-06 14:27:42,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10626 states, 10624 states have (on average 1.3467620481927711) internal successors, (14308), 10625 states have internal predecessors, (14308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10626 states to 10626 states and 14308 transitions. [2021-11-06 14:27:42,382 INFO L78 Accepts]: Start accepts. Automaton has 10626 states and 14308 transitions. Word has length 151 [2021-11-06 14:27:42,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:27:42,382 INFO L470 AbstractCegarLoop]: Abstraction has 10626 states and 14308 transitions. [2021-11-06 14:27:42,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 11 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 10626 states and 14308 transitions. [2021-11-06 14:27:42,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-06 14:27:42,389 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:27:42,389 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:27:42,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-06 14:27:42,590 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 [2021-11-06 14:27:42,590 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:27:42,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:27:42,591 INFO L85 PathProgramCache]: Analyzing trace with hash 683102328, now seen corresponding path program 4 times [2021-11-06 14:27:42,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:27:42,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715716026] [2021-11-06 14:27:42,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:27:42,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:27:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:27:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-06 14:27:42,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:27:42,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715716026] [2021-11-06 14:27:42,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715716026] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:27:42,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20673577] [2021-11-06 14:27:42,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-06 14:27:42,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:27:42,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:27:42,840 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) [2021-11-06 14:27:42,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-06 14:27:44,485 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-06 14:27:44,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:27:44,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 2050 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-06 14:27:44,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:27:44,924 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 14:27:44,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20673577] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:27:44,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:27:44,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 16 [2021-11-06 14:27:44,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942276393] [2021-11-06 14:27:44,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 14:27:44,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:27:44,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 14:27:44,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-06 14:27:44,927 INFO L87 Difference]: Start difference. First operand 10626 states and 14308 transitions. Second operand has 16 states, 16 states have (on average 9.6875) internal successors, (155), 16 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:46,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:27:46,937 INFO L93 Difference]: Finished difference Result 18033 states and 24277 transitions. [2021-11-06 14:27:46,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 14:27:46,938 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.6875) internal successors, (155), 16 states have internal predecessors, (155), 0 states have call successors, (0), 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 153 [2021-11-06 14:27:46,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:27:46,954 INFO L225 Difference]: With dead ends: 18033 [2021-11-06 14:27:46,955 INFO L226 Difference]: Without dead ends: 10940 [2021-11-06 14:27:46,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-11-06 14:27:46,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10940 states. [2021-11-06 14:27:48,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10940 to 10638. [2021-11-06 14:27:48,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10638 states, 10636 states have (on average 1.3463708160962768) internal successors, (14320), 10637 states have internal predecessors, (14320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:48,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10638 states to 10638 states and 14320 transitions. [2021-11-06 14:27:48,326 INFO L78 Accepts]: Start accepts. Automaton has 10638 states and 14320 transitions. Word has length 153 [2021-11-06 14:27:48,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:27:48,327 INFO L470 AbstractCegarLoop]: Abstraction has 10638 states and 14320 transitions. [2021-11-06 14:27:48,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.6875) internal successors, (155), 16 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:27:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand 10638 states and 14320 transitions. [2021-11-06 14:27:48,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-06 14:27:48,333 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:27:48,333 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:27:48,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-06 14:27:48,534 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,SelfDestructingSolverStorable31 [2021-11-06 14:27:48,534 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:27:48,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:27:48,535 INFO L85 PathProgramCache]: Analyzing trace with hash -138830960, now seen corresponding path program 5 times [2021-11-06 14:27:48,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:27:48,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375882005] [2021-11-06 14:27:48,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:27:48,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:27:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:27:48,811 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-06 14:27:48,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:27:48,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375882005] [2021-11-06 14:27:48,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375882005] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:27:48,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441245765] [2021-11-06 14:27:48,812 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-06 14:27:48,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:27:48,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:27:48,814 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) [2021-11-06 14:27:48,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-06 14:28:04,303 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-06 14:28:04,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:28:04,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-06 14:28:04,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:28:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-06 14:28:04,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441245765] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:28:04,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:28:04,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-11-06 14:28:04,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157562951] [2021-11-06 14:28:04,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 14:28:04,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:28:04,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 14:28:04,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-06 14:28:04,702 INFO L87 Difference]: Start difference. First operand 10638 states and 14320 transitions. Second operand has 15 states, 15 states have (on average 10.2) internal successors, (153), 15 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:06,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:28:06,649 INFO L93 Difference]: Finished difference Result 18057 states and 24301 transitions. [2021-11-06 14:28:06,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 14:28:06,650 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.2) internal successors, (153), 15 states have internal predecessors, (153), 0 states have call successors, (0), 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 154 [2021-11-06 14:28:06,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:28:06,665 INFO L225 Difference]: With dead ends: 18057 [2021-11-06 14:28:06,665 INFO L226 Difference]: Without dead ends: 10952 [2021-11-06 14:28:06,673 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-11-06 14:28:06,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10952 states. [2021-11-06 14:28:07,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10952 to 10650. [2021-11-06 14:28:07,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10650 states, 10648 states have (on average 1.3459804658151766) internal successors, (14332), 10649 states have internal predecessors, (14332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:07,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10650 states to 10650 states and 14332 transitions. [2021-11-06 14:28:07,948 INFO L78 Accepts]: Start accepts. Automaton has 10650 states and 14332 transitions. Word has length 154 [2021-11-06 14:28:07,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:28:07,948 INFO L470 AbstractCegarLoop]: Abstraction has 10650 states and 14332 transitions. [2021-11-06 14:28:07,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.2) internal successors, (153), 15 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:07,948 INFO L276 IsEmpty]: Start isEmpty. Operand 10650 states and 14332 transitions. [2021-11-06 14:28:07,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-06 14:28:07,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:28:07,955 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:28:07,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-06 14:28:08,156 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,SelfDestructingSolverStorable32 [2021-11-06 14:28:08,156 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:28:08,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:28:08,157 INFO L85 PathProgramCache]: Analyzing trace with hash 151040888, now seen corresponding path program 6 times [2021-11-06 14:28:08,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:28:08,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660155744] [2021-11-06 14:28:08,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:28:08,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:28:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-06 14:28:08,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:28:08,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660155744] [2021-11-06 14:28:08,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660155744] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:28:08,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132744133] [2021-11-06 14:28:08,545 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-06 14:28:08,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:28:08,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:28:08,546 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) [2021-11-06 14:28:08,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-06 14:28:29,815 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-11-06 14:28:29,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:28:29,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-06 14:28:29,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:28:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-06 14:28:30,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132744133] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:28:30,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:28:30,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-11-06 14:28:30,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307649756] [2021-11-06 14:28:30,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-06 14:28:30,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:28:30,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-06 14:28:30,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-11-06 14:28:30,337 INFO L87 Difference]: Start difference. First operand 10650 states and 14332 transitions. Second operand has 17 states, 17 states have (on average 9.117647058823529) internal successors, (155), 17 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:32,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:28:32,473 INFO L93 Difference]: Finished difference Result 18081 states and 24325 transitions. [2021-11-06 14:28:32,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 14:28:32,474 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.117647058823529) internal successors, (155), 17 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2021-11-06 14:28:32,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:28:32,490 INFO L225 Difference]: With dead ends: 18081 [2021-11-06 14:28:32,490 INFO L226 Difference]: Without dead ends: 10964 [2021-11-06 14:28:32,499 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2021-11-06 14:28:32,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10964 states. [2021-11-06 14:28:33,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10964 to 10662. [2021-11-06 14:28:33,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10662 states, 10660 states have (on average 1.345590994371482) internal successors, (14344), 10661 states have internal predecessors, (14344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:33,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10662 states to 10662 states and 14344 transitions. [2021-11-06 14:28:33,897 INFO L78 Accepts]: Start accepts. Automaton has 10662 states and 14344 transitions. Word has length 155 [2021-11-06 14:28:33,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:28:33,897 INFO L470 AbstractCegarLoop]: Abstraction has 10662 states and 14344 transitions. [2021-11-06 14:28:33,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.117647058823529) internal successors, (155), 17 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:33,898 INFO L276 IsEmpty]: Start isEmpty. Operand 10662 states and 14344 transitions. [2021-11-06 14:28:33,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-06 14:28:33,904 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:28:33,904 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:28:33,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-06 14:28:34,105 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,SelfDestructingSolverStorable33 [2021-11-06 14:28:34,105 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:28:34,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:28:34,106 INFO L85 PathProgramCache]: Analyzing trace with hash 547133584, now seen corresponding path program 7 times [2021-11-06 14:28:34,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:28:34,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763882377] [2021-11-06 14:28:34,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:28:34,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:28:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:34,438 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-06 14:28:34,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:28:34,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763882377] [2021-11-06 14:28:34,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763882377] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:28:34,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564167868] [2021-11-06 14:28:34,439 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-06 14:28:34,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:28:34,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:28:34,441 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) [2021-11-06 14:28:34,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-06 14:28:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:39,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-06 14:28:39,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:28:39,590 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 20 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-06 14:28:39,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564167868] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:28:39,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:28:39,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-11-06 14:28:39,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831057345] [2021-11-06 14:28:39,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-06 14:28:39,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:28:39,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-06 14:28:39,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2021-11-06 14:28:39,592 INFO L87 Difference]: Start difference. First operand 10662 states and 14344 transitions. Second operand has 21 states, 21 states have (on average 7.619047619047619) internal successors, (160), 21 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:42,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:28:42,424 INFO L93 Difference]: Finished difference Result 18105 states and 24349 transitions. [2021-11-06 14:28:42,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 14:28:42,424 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.619047619047619) internal successors, (160), 21 states have internal predecessors, (160), 0 states have call successors, (0), 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 156 [2021-11-06 14:28:42,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:28:42,524 INFO L225 Difference]: With dead ends: 18105 [2021-11-06 14:28:42,524 INFO L226 Difference]: Without dead ends: 10976 [2021-11-06 14:28:42,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2021-11-06 14:28:42,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10976 states. [2021-11-06 14:28:43,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10976 to 10674. [2021-11-06 14:28:43,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10674 states, 10672 states have (on average 1.3452023988005997) internal successors, (14356), 10673 states have internal predecessors, (14356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:43,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10674 states to 10674 states and 14356 transitions. [2021-11-06 14:28:43,820 INFO L78 Accepts]: Start accepts. Automaton has 10674 states and 14356 transitions. Word has length 156 [2021-11-06 14:28:43,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:28:43,820 INFO L470 AbstractCegarLoop]: Abstraction has 10674 states and 14356 transitions. [2021-11-06 14:28:43,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.619047619047619) internal successors, (160), 21 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:43,820 INFO L276 IsEmpty]: Start isEmpty. Operand 10674 states and 14356 transitions. [2021-11-06 14:28:43,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-06 14:28:43,826 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:28:43,826 INFO L513 BasicCegarLoop]: trace histogram [8, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:28:43,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-06 14:28:44,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:28:44,032 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:28:44,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:28:44,032 INFO L85 PathProgramCache]: Analyzing trace with hash -58894728, now seen corresponding path program 8 times [2021-11-06 14:28:44,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:28:44,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84942096] [2021-11-06 14:28:44,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:28:44,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:28:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-06 14:28:44,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:28:44,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84942096] [2021-11-06 14:28:44,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84942096] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:28:44,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829707127] [2021-11-06 14:28:44,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 14:28:44,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:28:44,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:28:44,507 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) [2021-11-06 14:28:44,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-06 14:28:45,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 14:28:45,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:28:45,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 2178 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-06 14:28:45,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:28:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 20 proven. 37 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-06 14:28:45,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829707127] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:28:45,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:28:45,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-11-06 14:28:45,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35707313] [2021-11-06 14:28:45,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-06 14:28:45,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:28:45,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-06 14:28:45,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2021-11-06 14:28:45,963 INFO L87 Difference]: Start difference. First operand 10674 states and 14356 transitions. Second operand has 23 states, 23 states have (on average 7.043478260869565) internal successors, (162), 23 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:49,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:28:49,348 INFO L93 Difference]: Finished difference Result 18129 states and 24373 transitions. [2021-11-06 14:28:49,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 14:28:49,349 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.043478260869565) internal successors, (162), 23 states have internal predecessors, (162), 0 states have call successors, (0), 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 157 [2021-11-06 14:28:49,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:28:49,362 INFO L225 Difference]: With dead ends: 18129 [2021-11-06 14:28:49,362 INFO L226 Difference]: Without dead ends: 10988 [2021-11-06 14:28:49,370 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2021-11-06 14:28:49,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10988 states. [2021-11-06 14:28:50,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10988 to 10686. [2021-11-06 14:28:50,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10686 states, 10684 states have (on average 1.3448146761512543) internal successors, (14368), 10685 states have internal predecessors, (14368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10686 states to 10686 states and 14368 transitions. [2021-11-06 14:28:50,660 INFO L78 Accepts]: Start accepts. Automaton has 10686 states and 14368 transitions. Word has length 157 [2021-11-06 14:28:50,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:28:50,660 INFO L470 AbstractCegarLoop]: Abstraction has 10686 states and 14368 transitions. [2021-11-06 14:28:50,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.043478260869565) internal successors, (162), 23 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 10686 states and 14368 transitions. [2021-11-06 14:28:50,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-06 14:28:50,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:28:50,667 INFO L513 BasicCegarLoop]: trace histogram [9, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:28:50,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-06 14:28:50,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:28:50,868 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:28:50,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:28:50,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1665903216, now seen corresponding path program 9 times [2021-11-06 14:28:50,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:28:50,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80335205] [2021-11-06 14:28:50,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:28:50,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:28:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 18 proven. 45 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-06 14:28:51,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:28:51,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80335205] [2021-11-06 14:28:51,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80335205] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:28:51,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609646280] [2021-11-06 14:28:51,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 14:28:51,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:28:51,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:28:51,254 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:28:51,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process