./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.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 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:28:11,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:28:11,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:28:11,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:28:11,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:28:11,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:28:11,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:28:11,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:28:11,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:28:11,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:28:11,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:28:11,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:28:11,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:28:11,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:28:11,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:28:11,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:28:11,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:28:11,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:28:11,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:28:11,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:28:11,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:28:11,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:28:11,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:28:11,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:28:11,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:28:11,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:28:11,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:28:11,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:28:11,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:28:11,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:28:11,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:28:11,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:28:11,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:28:11,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:28:11,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:28:11,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:28:11,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:28:11,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:28:11,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:28:11,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:28:11,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:28:11,858 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:28:11,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:28:11,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:28:11,888 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:28:11,888 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:28:11,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:28:11,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:28:11,890 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:28:11,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:28:11,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:28:11,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:28:11,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:28:11,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:28:11,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:28:11,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:28:11,891 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:28:11,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:28:11,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:28:11,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:28:11,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:28:11,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:28:11,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:28:11,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:28:11,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:28:11,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:28:11,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:28:11,893 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:28:11,893 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:28:11,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:28:11,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:28:11,894 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 [2021-11-06 17:28:12,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:28:12,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:28:12,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:28:12,092 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:28:12,093 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:28:12,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-11-06 17:28:12,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeecaf08e/795dc40bee6443fb9c2b5564c2aeb64a/FLAG70a457801 [2021-11-06 17:28:12,759 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:28:12,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-11-06 17:28:12,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeecaf08e/795dc40bee6443fb9c2b5564c2aeb64a/FLAG70a457801 [2021-11-06 17:28:13,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeecaf08e/795dc40bee6443fb9c2b5564c2aeb64a [2021-11-06 17:28:13,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:28:13,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:28:13,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:28:13,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:28:13,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:28:13,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:28:13" (1/1) ... [2021-11-06 17:28:13,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@362b5ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:28:13, skipping insertion in model container [2021-11-06 17:28:13,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:28:13" (1/1) ... [2021-11-06 17:28:13,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:28:13,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:28:14,384 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2021-11-06 17:28:14,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:28:14,469 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:28:14,710 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2021-11-06 17:28:14,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:28:14,827 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:28:14,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:28:14 WrapperNode [2021-11-06 17:28:14,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:28:14,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:28:14,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:28:14,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:28:14,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:28:14" (1/1) ... [2021-11-06 17:28:14,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:28:14" (1/1) ... [2021-11-06 17:28:15,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:28:15,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:28:15,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:28:15,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:28:15,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:28:14" (1/1) ... [2021-11-06 17:28:15,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:28:14" (1/1) ... [2021-11-06 17:28:15,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:28:14" (1/1) ... [2021-11-06 17:28:15,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:28:14" (1/1) ... [2021-11-06 17:28:15,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:28:14" (1/1) ... [2021-11-06 17:28:15,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:28:14" (1/1) ... [2021-11-06 17:28:15,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:28:14" (1/1) ... [2021-11-06 17:28:15,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:28:15,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:28:15,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:28:15,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:28:15,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:28:14" (1/1) ... [2021-11-06 17:28:15,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:28:15,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:28:15,542 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 17:28:15,547 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 17:28:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:28:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:28:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:28:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:28:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:28:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:28:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:28:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:28:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:28:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:28:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:28:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:28:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:28:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:28:15,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:28:20,459 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:28:20,460 INFO L299 CfgBuilder]: Removed 2282 assume(true) statements. [2021-11-06 17:28:20,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:28:20 BoogieIcfgContainer [2021-11-06 17:28:20,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:28:20,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:28:20,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:28:20,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:28:20,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:28:13" (1/3) ... [2021-11-06 17:28:20,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea2cd1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:28:20, skipping insertion in model container [2021-11-06 17:28:20,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:28:14" (2/3) ... [2021-11-06 17:28:20,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea2cd1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:28:20, skipping insertion in model container [2021-11-06 17:28:20,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:28:20" (3/3) ... [2021-11-06 17:28:20,468 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-11-06 17:28:20,473 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:28:20,473 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-06 17:28:20,514 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:28:20,519 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 17:28:20,519 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-06 17:28:20,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 2084 states, 2071 states have (on average 1.3650410429744084) internal successors, (2827), 2083 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states 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 17:28:20,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-06 17:28:20,576 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:28:20,576 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, 1] [2021-11-06 17:28:20,577 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:28:20,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:28:20,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1766303631, now seen corresponding path program 1 times [2021-11-06 17:28:20,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:28:20,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879487767] [2021-11-06 17:28:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:28:20,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:28:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:28:20,927 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 17:28:20,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:28:20,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879487767] [2021-11-06 17:28:20,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879487767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:28:20,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:28:20,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:28:20,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479451038] [2021-11-06 17:28:20,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:28:20,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:28:20,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:28:20,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:28:20,946 INFO L87 Difference]: Start difference. First operand has 2084 states, 2071 states have (on average 1.3650410429744084) internal successors, (2827), 2083 states have internal predecessors, (2827), 0 states have call successors, (0), 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 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 17:28:21,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:28:21,051 INFO L93 Difference]: Finished difference Result 4164 states and 5649 transitions. [2021-11-06 17:28:21,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:28:21,053 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-06 17:28:21,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:28:21,074 INFO L225 Difference]: With dead ends: 4164 [2021-11-06 17:28:21,074 INFO L226 Difference]: Without dead ends: 2025 [2021-11-06 17:28:21,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:28:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2021-11-06 17:28:21,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 2025. [2021-11-06 17:28:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2025 states, 2013 states have (on average 1.3288623944361648) internal successors, (2675), 2024 states have internal predecessors, (2675), 0 states have call successors, (0), 0 states 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 17:28:21,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 2675 transitions. [2021-11-06 17:28:21,158 INFO L78 Accepts]: Start accepts. Automaton has 2025 states and 2675 transitions. Word has length 59 [2021-11-06 17:28:21,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:28:21,158 INFO L470 AbstractCegarLoop]: Abstraction has 2025 states and 2675 transitions. [2021-11-06 17:28:21,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 17:28:21,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2025 states and 2675 transitions. [2021-11-06 17:28:21,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-06 17:28:21,162 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:28:21,162 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, 1] [2021-11-06 17:28:21,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:28:21,162 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:28:21,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:28:21,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1863285317, now seen corresponding path program 1 times [2021-11-06 17:28:21,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:28:21,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743469780] [2021-11-06 17:28:21,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:28:21,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:28:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:28:21,347 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 17:28:21,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:28:21,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743469780] [2021-11-06 17:28:21,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743469780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:28:21,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:28:21,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:28:21,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840340015] [2021-11-06 17:28:21,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:28:21,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:28:21,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:28:21,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:28:21,351 INFO L87 Difference]: Start difference. First operand 2025 states and 2675 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 17:28:21,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:28:21,567 INFO L93 Difference]: Finished difference Result 7772 states and 10262 transitions. [2021-11-06 17:28:21,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:28:21,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-06 17:28:21,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:28:21,583 INFO L225 Difference]: With dead ends: 7772 [2021-11-06 17:28:21,584 INFO L226 Difference]: Without dead ends: 5780 [2021-11-06 17:28:21,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:28:21,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5780 states. [2021-11-06 17:28:21,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5780 to 3015. [2021-11-06 17:28:21,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 3003 states have (on average 1.3253413253413253) internal successors, (3980), 3014 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states 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 17:28:21,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 3980 transitions. [2021-11-06 17:28:21,710 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 3980 transitions. Word has length 59 [2021-11-06 17:28:21,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:28:21,711 INFO L470 AbstractCegarLoop]: Abstraction has 3015 states and 3980 transitions. [2021-11-06 17:28:21,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 17:28:21,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 3980 transitions. [2021-11-06 17:28:21,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-06 17:28:21,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:28:21,717 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, 1, 1] [2021-11-06 17:28:21,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:28:21,717 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:28:21,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:28:21,723 INFO L85 PathProgramCache]: Analyzing trace with hash -160932243, now seen corresponding path program 1 times [2021-11-06 17:28:21,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:28:21,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819492272] [2021-11-06 17:28:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:28:21,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:28:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:28:21,898 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 17:28:21,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:28:21,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819492272] [2021-11-06 17:28:21,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819492272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:28:21,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:28:21,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:28:21,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471386538] [2021-11-06 17:28:21,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:28:21,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:28:21,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:28:21,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:28:21,905 INFO L87 Difference]: Start difference. First operand 3015 states and 3980 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 17:28:22,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:28:22,169 INFO L93 Difference]: Finished difference Result 12722 states and 16789 transitions. [2021-11-06 17:28:22,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:28:22,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-06 17:28:22,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:28:22,199 INFO L225 Difference]: With dead ends: 12722 [2021-11-06 17:28:22,199 INFO L226 Difference]: Without dead ends: 9740 [2021-11-06 17:28:22,207 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:28:22,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9740 states. [2021-11-06 17:28:22,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9740 to 5730. [2021-11-06 17:28:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5730 states, 5718 states have (on average 1.3256383350821965) internal successors, (7580), 5729 states have internal predecessors, (7580), 0 states have call successors, (0), 0 states 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 17:28:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5730 states to 5730 states and 7580 transitions. [2021-11-06 17:28:22,416 INFO L78 Accepts]: Start accepts. Automaton has 5730 states and 7580 transitions. Word has length 60 [2021-11-06 17:28:22,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:28:22,417 INFO L470 AbstractCegarLoop]: Abstraction has 5730 states and 7580 transitions. [2021-11-06 17:28:22,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 17:28:22,417 INFO L276 IsEmpty]: Start isEmpty. Operand 5730 states and 7580 transitions. [2021-11-06 17:28:22,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 17:28:22,420 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:28:22,420 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, 1, 1, 1] [2021-11-06 17:28:22,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:28:22,420 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:28:22,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:28:22,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1512833684, now seen corresponding path program 1 times [2021-11-06 17:28:22,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:28:22,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396208171] [2021-11-06 17:28:22,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:28:22,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:28:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:28:22,568 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 17:28:22,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:28:22,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396208171] [2021-11-06 17:28:22,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396208171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:28:22,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:28:22,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:28:22,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711958792] [2021-11-06 17:28:22,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:28:22,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:28:22,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:28:22,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:28:22,573 INFO L87 Difference]: Start difference. First operand 5730 states and 7580 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 17:28:23,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:28:23,108 INFO L93 Difference]: Finished difference Result 24596 states and 32496 transitions. [2021-11-06 17:28:23,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:28:23,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-11-06 17:28:23,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:28:23,157 INFO L225 Difference]: With dead ends: 24596 [2021-11-06 17:28:23,158 INFO L226 Difference]: Without dead ends: 18899 [2021-11-06 17:28:23,168 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:28:23,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18899 states. [2021-11-06 17:28:23,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18899 to 10920. [2021-11-06 17:28:23,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10920 states, 10908 states have (on average 1.325082508250825) internal successors, (14454), 10919 states have internal predecessors, (14454), 0 states have call successors, (0), 0 states 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 17:28:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10920 states to 10920 states and 14454 transitions. [2021-11-06 17:28:23,502 INFO L78 Accepts]: Start accepts. Automaton has 10920 states and 14454 transitions. Word has length 61 [2021-11-06 17:28:23,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:28:23,503 INFO L470 AbstractCegarLoop]: Abstraction has 10920 states and 14454 transitions. [2021-11-06 17:28:23,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 17:28:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 10920 states and 14454 transitions. [2021-11-06 17:28:23,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 17:28:23,505 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:28:23,505 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, 1, 1, 1] [2021-11-06 17:28:23,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:28:23,506 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:28:23,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:28:23,506 INFO L85 PathProgramCache]: Analyzing trace with hash 622908746, now seen corresponding path program 1 times [2021-11-06 17:28:23,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:28:23,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589313540] [2021-11-06 17:28:23,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:28:23,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:28:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:28:23,594 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 17:28:23,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:28:23,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589313540] [2021-11-06 17:28:23,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589313540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:28:23,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:28:23,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:28:23,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215267314] [2021-11-06 17:28:23,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:28:23,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:28:23,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:28:23,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:28:23,596 INFO L87 Difference]: Start difference. First operand 10920 states and 14454 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 17:28:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:28:24,036 INFO L93 Difference]: Finished difference Result 26895 states and 35725 transitions. [2021-11-06 17:28:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:28:24,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-11-06 17:28:24,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:28:24,066 INFO L225 Difference]: With dead ends: 26895 [2021-11-06 17:28:24,067 INFO L226 Difference]: Without dead ends: 16008 [2021-11-06 17:28:24,082 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 17:28:24,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16008 states. [2021-11-06 17:28:24,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16008 to 15216. [2021-11-06 17:28:24,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15216 states, 15204 states have (on average 1.3313601683767429) internal successors, (20242), 15215 states have internal predecessors, (20242), 0 states have call successors, (0), 0 states 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 17:28:24,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15216 states to 15216 states and 20242 transitions. [2021-11-06 17:28:24,428 INFO L78 Accepts]: Start accepts. Automaton has 15216 states and 20242 transitions. Word has length 61 [2021-11-06 17:28:24,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:28:24,429 INFO L470 AbstractCegarLoop]: Abstraction has 15216 states and 20242 transitions. [2021-11-06 17:28:24,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 17:28:24,430 INFO L276 IsEmpty]: Start isEmpty. Operand 15216 states and 20242 transitions. [2021-11-06 17:28:24,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 17:28:24,431 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:28:24,431 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, 1, 1, 1, 1] [2021-11-06 17:28:24,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 17:28:24,432 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:28:24,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:28:24,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1859970716, now seen corresponding path program 1 times [2021-11-06 17:28:24,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:28:24,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59227755] [2021-11-06 17:28:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:28:24,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:28:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:28:24,550 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 17:28:24,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:28:24,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59227755] [2021-11-06 17:28:24,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59227755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:28:24,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:28:24,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:28:24,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318881311] [2021-11-06 17:28:24,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:28:24,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:28:24,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:28:24,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:28:24,553 INFO L87 Difference]: Start difference. First operand 15216 states and 20242 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:28:25,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:28:25,445 INFO L93 Difference]: Finished difference Result 62288 states and 82676 transitions. [2021-11-06 17:28:25,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:28:25,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-06 17:28:25,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:28:25,550 INFO L225 Difference]: With dead ends: 62288 [2021-11-06 17:28:25,550 INFO L226 Difference]: Without dead ends: 47105 [2021-11-06 17:28:25,585 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:28:25,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47105 states. [2021-11-06 17:28:26,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47105 to 28447. [2021-11-06 17:28:26,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28447 states, 28435 states have (on average 1.3300509934939335) internal successors, (37820), 28446 states have internal predecessors, (37820), 0 states have call successors, (0), 0 states 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 17:28:26,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28447 states to 28447 states and 37820 transitions. [2021-11-06 17:28:26,518 INFO L78 Accepts]: Start accepts. Automaton has 28447 states and 37820 transitions. Word has length 62 [2021-11-06 17:28:26,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:28:26,518 INFO L470 AbstractCegarLoop]: Abstraction has 28447 states and 37820 transitions. [2021-11-06 17:28:26,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:28:26,518 INFO L276 IsEmpty]: Start isEmpty. Operand 28447 states and 37820 transitions. [2021-11-06 17:28:26,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 17:28:26,520 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:28:26,520 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:28:26,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 17:28:26,520 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:28:26,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:28:26,521 INFO L85 PathProgramCache]: Analyzing trace with hash -925212042, now seen corresponding path program 1 times [2021-11-06 17:28:26,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:28:26,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607778015] [2021-11-06 17:28:26,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:28:26,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:28:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:28:26,666 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 17:28:26,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:28:26,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607778015] [2021-11-06 17:28:26,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607778015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:28:26,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:28:26,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 17:28:26,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518537646] [2021-11-06 17:28:26,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:28:26,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:28:26,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:28:26,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:28:26,671 INFO L87 Difference]: Start difference. First operand 28447 states and 37820 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:28:27,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:28:27,960 INFO L93 Difference]: Finished difference Result 90807 states and 120568 transitions. [2021-11-06 17:28:27,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 17:28:27,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-06 17:28:27,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:28:28,101 INFO L225 Difference]: With dead ends: 90807 [2021-11-06 17:28:28,102 INFO L226 Difference]: Without dead ends: 62393 [2021-11-06 17:28:28,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 17:28:28,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62393 states. [2021-11-06 17:28:29,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62393 to 28527. [2021-11-06 17:28:29,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28527 states, 28515 states have (on average 1.3291250219182886) internal successors, (37900), 28526 states have internal predecessors, (37900), 0 states have call successors, (0), 0 states 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 17:28:29,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28527 states to 28527 states and 37900 transitions. [2021-11-06 17:28:29,449 INFO L78 Accepts]: Start accepts. Automaton has 28527 states and 37900 transitions. Word has length 68 [2021-11-06 17:28:29,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:28:29,449 INFO L470 AbstractCegarLoop]: Abstraction has 28527 states and 37900 transitions. [2021-11-06 17:28:29,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:28:29,449 INFO L276 IsEmpty]: Start isEmpty. Operand 28527 states and 37900 transitions. [2021-11-06 17:28:29,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-06 17:28:29,452 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:28:29,453 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:28:29,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 17:28:29,453 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:28:29,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:28:29,454 INFO L85 PathProgramCache]: Analyzing trace with hash 293042139, now seen corresponding path program 1 times [2021-11-06 17:28:29,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:28:29,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143538641] [2021-11-06 17:28:29,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:28:29,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:28:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:28:29,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:28:29,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:28:29,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143538641] [2021-11-06 17:28:29,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143538641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:28:29,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:28:29,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:28:29,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51798000] [2021-11-06 17:28:29,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:28:29,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:28:29,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:28:29,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:28:29,569 INFO L87 Difference]: Start difference. First operand 28527 states and 37900 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 17:28:30,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:28:30,717 INFO L93 Difference]: Finished difference Result 81051 states and 107870 transitions. [2021-11-06 17:28:30,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:28:30,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 17:28:30,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:28:30,807 INFO L225 Difference]: With dead ends: 81051 [2021-11-06 17:28:30,808 INFO L226 Difference]: Without dead ends: 52557 [2021-11-06 17:28:30,847 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 17:28:30,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52557 states. [2021-11-06 17:28:32,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52557 to 52501. [2021-11-06 17:28:32,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52501 states, 52489 states have (on average 1.3322600925908286) internal successors, (69929), 52500 states have internal predecessors, (69929), 0 states have call successors, (0), 0 states 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 17:28:32,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52501 states to 52501 states and 69929 transitions. [2021-11-06 17:28:32,495 INFO L78 Accepts]: Start accepts. Automaton has 52501 states and 69929 transitions. Word has length 156 [2021-11-06 17:28:32,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:28:32,495 INFO L470 AbstractCegarLoop]: Abstraction has 52501 states and 69929 transitions. [2021-11-06 17:28:32,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 17:28:32,496 INFO L276 IsEmpty]: Start isEmpty. Operand 52501 states and 69929 transitions. [2021-11-06 17:28:32,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-06 17:28:32,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:28:32,499 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:28:32,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 17:28:32,500 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:28:32,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:28:32,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1152985167, now seen corresponding path program 1 times [2021-11-06 17:28:32,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:28:32,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595450776] [2021-11-06 17:28:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:28:32,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:28:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:28:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 17:28:32,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:28:32,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595450776] [2021-11-06 17:28:32,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595450776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:28:32,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:28:32,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:28:32,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174435681] [2021-11-06 17:28:32,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:28:32,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:28:32,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:28:32,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:28:32,609 INFO L87 Difference]: Start difference. First operand 52501 states and 69929 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 17:28:34,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:28:34,085 INFO L93 Difference]: Finished difference Result 104969 states and 139823 transitions. [2021-11-06 17:28:34,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:28:34,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 175 [2021-11-06 17:28:34,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:28:34,187 INFO L225 Difference]: With dead ends: 104969 [2021-11-06 17:28:34,188 INFO L226 Difference]: Without dead ends: 52501 [2021-11-06 17:28:34,233 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 17:28:34,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52501 states. [2021-11-06 17:28:35,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52501 to 52501. [2021-11-06 17:28:35,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52501 states, 52489 states have (on average 1.3316504410447902) internal successors, (69897), 52500 states have internal predecessors, (69897), 0 states have call successors, (0), 0 states 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 17:28:35,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52501 states to 52501 states and 69897 transitions. [2021-11-06 17:28:35,928 INFO L78 Accepts]: Start accepts. Automaton has 52501 states and 69897 transitions. Word has length 175 [2021-11-06 17:28:35,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:28:35,928 INFO L470 AbstractCegarLoop]: Abstraction has 52501 states and 69897 transitions. [2021-11-06 17:28:35,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 17:28:35,928 INFO L276 IsEmpty]: Start isEmpty. Operand 52501 states and 69897 transitions. [2021-11-06 17:28:35,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-06 17:28:35,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:28:35,932 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:28:35,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 17:28:35,932 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:28:35,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:28:35,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1769528987, now seen corresponding path program 1 times [2021-11-06 17:28:35,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:28:35,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698799304] [2021-11-06 17:28:35,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:28:35,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:28:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:28:36,058 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 17:28:36,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:28:36,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698799304] [2021-11-06 17:28:36,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698799304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:28:36,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:28:36,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:28:36,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735872166] [2021-11-06 17:28:36,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:28:36,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:28:36,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:28:36,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:28:36,061 INFO L87 Difference]: Start difference. First operand 52501 states and 69897 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 17:28:38,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:28:38,527 INFO L93 Difference]: Finished difference Result 155421 states and 206933 transitions. [2021-11-06 17:28:38,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:28:38,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 188 [2021-11-06 17:28:38,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:28:38,719 INFO L225 Difference]: With dead ends: 155421 [2021-11-06 17:28:38,719 INFO L226 Difference]: Without dead ends: 102953 [2021-11-06 17:28:38,786 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 17:28:38,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102953 states. [2021-11-06 17:28:40,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102953 to 52517. [2021-11-06 17:28:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52517 states, 52505 states have (on average 1.331549376249881) internal successors, (69913), 52516 states have internal predecessors, (69913), 0 states have call successors, (0), 0 states 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 17:28:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52517 states to 52517 states and 69913 transitions. [2021-11-06 17:28:40,891 INFO L78 Accepts]: Start accepts. Automaton has 52517 states and 69913 transitions. Word has length 188 [2021-11-06 17:28:40,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:28:40,891 INFO L470 AbstractCegarLoop]: Abstraction has 52517 states and 69913 transitions. [2021-11-06 17:28:40,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 17:28:40,892 INFO L276 IsEmpty]: Start isEmpty. Operand 52517 states and 69913 transitions. [2021-11-06 17:28:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-06 17:28:40,895 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:28:40,895 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:28:40,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 17:28:40,895 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:28:40,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:28:40,896 INFO L85 PathProgramCache]: Analyzing trace with hash -719684328, now seen corresponding path program 1 times [2021-11-06 17:28:40,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:28:40,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934476814] [2021-11-06 17:28:40,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:28:40,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:28:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:28:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 17:28:41,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:28:41,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934476814] [2021-11-06 17:28:41,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934476814] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:28:41,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423833013] [2021-11-06 17:28:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:28:41,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:28:41,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:28:41,040 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 17:28:41,071 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 17:28:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:28:41,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 3586 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 17:28:41,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:28:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 17:28:42,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423833013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:28:42,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 17:28:42,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 17:28:42,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135289920] [2021-11-06 17:28:42,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:28:42,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:28:42,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:28:42,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:28:42,237 INFO L87 Difference]: Start difference. First operand 52517 states and 69913 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 17:28:45,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:28:45,488 INFO L93 Difference]: Finished difference Result 157005 states and 209189 transitions. [2021-11-06 17:28:45,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:28:45,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 203 [2021-11-06 17:28:45,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:28:45,721 INFO L225 Difference]: With dead ends: 157005 [2021-11-06 17:28:45,722 INFO L226 Difference]: Without dead ends: 104521 [2021-11-06 17:28:45,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:28:45,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104521 states. [2021-11-06 17:28:48,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104521 to 53189. [2021-11-06 17:28:48,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53189 states, 53177 states have (on average 1.3273595727476164) internal successors, (70585), 53188 states have internal predecessors, (70585), 0 states have call successors, (0), 0 states 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 17:28:48,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53189 states to 53189 states and 70585 transitions. [2021-11-06 17:28:48,174 INFO L78 Accepts]: Start accepts. Automaton has 53189 states and 70585 transitions. Word has length 203 [2021-11-06 17:28:48,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:28:48,174 INFO L470 AbstractCegarLoop]: Abstraction has 53189 states and 70585 transitions. [2021-11-06 17:28:48,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 17:28:48,174 INFO L276 IsEmpty]: Start isEmpty. Operand 53189 states and 70585 transitions. [2021-11-06 17:28:48,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-06 17:28:48,177 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:28:48,177 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:28:48,201 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 17:28:48,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-06 17:28:48,392 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:28:48,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:28:48,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1899573033, now seen corresponding path program 1 times [2021-11-06 17:28:48,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:28:48,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072999534] [2021-11-06 17:28:48,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:28:48,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:28:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:28:48,542 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 17:28:48,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:28:48,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072999534] [2021-11-06 17:28:48,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072999534] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:28:48,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678145865] [2021-11-06 17:28:48,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:28:48,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:28:48,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:28:48,560 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 17:28:48,596 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 17:28:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:28:49,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 3694 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 17:28:49,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:28:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 17:28:49,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678145865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:28:49,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 17:28:49,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 17:28:49,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158190241] [2021-11-06 17:28:49,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:28:49,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:28:49,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:28:49,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:28:49,817 INFO L87 Difference]: Start difference. First operand 53189 states and 70585 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states 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 17:28:52,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:28:52,044 INFO L93 Difference]: Finished difference Result 123569 states and 165127 transitions. [2021-11-06 17:28:52,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:28:52,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 203 [2021-11-06 17:28:52,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:28:52,165 INFO L225 Difference]: With dead ends: 123569 [2021-11-06 17:28:52,165 INFO L226 Difference]: Without dead ends: 70413 [2021-11-06 17:28:52,210 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:28:52,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70413 states. [2021-11-06 17:28:54,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70413 to 68829. [2021-11-06 17:28:54,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68829 states, 68817 states have (on average 1.3351497449758054) internal successors, (91881), 68828 states have internal predecessors, (91881), 0 states have call successors, (0), 0 states 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 17:28:54,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68829 states to 68829 states and 91881 transitions. [2021-11-06 17:28:54,613 INFO L78 Accepts]: Start accepts. Automaton has 68829 states and 91881 transitions. Word has length 203 [2021-11-06 17:28:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:28:54,613 INFO L470 AbstractCegarLoop]: Abstraction has 68829 states and 91881 transitions. [2021-11-06 17:28:54,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states 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 17:28:54,614 INFO L276 IsEmpty]: Start isEmpty. Operand 68829 states and 91881 transitions. [2021-11-06 17:28:54,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-06 17:28:54,618 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:28:54,618 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:28:54,648 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 17:28:54,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-06 17:28:54,832 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 17:28:54,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:28:54,832 INFO L85 PathProgramCache]: Analyzing trace with hash 438643562, now seen corresponding path program 1 times [2021-11-06 17:28:54,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:28:54,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847559312] [2021-11-06 17:28:54,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:28:54,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:28:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:28:54,964 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 17:28:54,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:28:54,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847559312] [2021-11-06 17:28:54,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847559312] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:28:54,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828109981] [2021-11-06 17:28:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:28:54,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:28:54,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:28:54,966 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 17:28:54,967 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 17:28:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:28:55,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 3620 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 17:28:55,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:28:56,172 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 17:28:56,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828109981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:28:56,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 17:28:56,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 17:28:56,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497491560] [2021-11-06 17:28:56,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:28:56,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:28:56,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:28:56,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:28:56,174 INFO L87 Difference]: Start difference. First operand 68829 states and 91881 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 2 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 17:28:58,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:28:58,657 INFO L93 Difference]: Finished difference Result 137625 states and 183727 transitions. [2021-11-06 17:28:58,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:28:58,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 2 states have internal predecessors, (214), 0 states have call successors, (0), 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 218 [2021-11-06 17:28:58,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:28:58,773 INFO L225 Difference]: With dead ends: 137625 [2021-11-06 17:28:58,773 INFO L226 Difference]: Without dead ends: 68829 [2021-11-06 17:28:58,826 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:28:58,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68829 states.