./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 c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-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-wip.dd.seqcomp-c36dfa3 [2021-11-04 08:05:00,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 08:05:00,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 08:05:01,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 08:05:01,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 08:05:01,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 08:05:01,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 08:05:01,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 08:05:01,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 08:05:01,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 08:05:01,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 08:05:01,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 08:05:01,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 08:05:01,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 08:05:01,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 08:05:01,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 08:05:01,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 08:05:01,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 08:05:01,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 08:05:01,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 08:05:01,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 08:05:01,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 08:05:01,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 08:05:01,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 08:05:01,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 08:05:01,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 08:05:01,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 08:05:01,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 08:05:01,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 08:05:01,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 08:05:01,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 08:05:01,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 08:05:01,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 08:05:01,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 08:05:01,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 08:05:01,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 08:05:01,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 08:05:01,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 08:05:01,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 08:05:01,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 08:05:01,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 08:05:01,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 08:05:01,121 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 08:05:01,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 08:05:01,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 08:05:01,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 08:05:01,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 08:05:01,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 08:05:01,124 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 08:05:01,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 08:05:01,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 08:05:01,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 08:05:01,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 08:05:01,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 08:05:01,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 08:05:01,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 08:05:01,126 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 08:05:01,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 08:05:01,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 08:05:01,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 08:05:01,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 08:05:01,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 08:05:01,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 08:05:01,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 08:05:01,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 08:05:01,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 08:05:01,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 08:05:01,128 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 08:05:01,129 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 08:05:01,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 08:05:01,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 08:05:01,129 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 [2021-11-04 08:05:01,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 08:05:01,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 08:05:01,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 08:05:01,396 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 08:05:01,397 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 08:05:01,398 INFO L432 ainManager$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 [2021-11-04 08:05:01,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa3f2c64f/1b000f2e2a8c42b1b4f34a859708aba0/FLAGf1e4cfc23 [2021-11-04 08:05:02,224 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 08:05:02,225 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 [2021-11-04 08:05:02,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa3f2c64f/1b000f2e2a8c42b1b4f34a859708aba0/FLAGf1e4cfc23 [2021-11-04 08:05:02,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa3f2c64f/1b000f2e2a8c42b1b4f34a859708aba0 [2021-11-04 08:05:02,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 08:05:02,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 08:05:02,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 08:05:02,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 08:05:02,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 08:05:02,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:05:02" (1/1) ... [2021-11-04 08:05:02,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60bb7d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:05:02, skipping insertion in model container [2021-11-04 08:05:02,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:05:02" (1/1) ... [2021-11-04 08:05:02,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 08:05:02,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 08:05:03,816 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] [2021-11-04 08:05:03,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 08:05:03,950 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 08:05:04,296 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] [2021-11-04 08:05:04,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 08:05:04,434 INFO L208 MainTranslator]: Completed translation [2021-11-04 08:05:04,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:05:04 WrapperNode [2021-11-04 08:05:04,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 08:05:04,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 08:05:04,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 08:05:04,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 08:05:04,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:05:04" (1/1) ... [2021-11-04 08:05:04,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:05:04" (1/1) ... [2021-11-04 08:05:04,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 08:05:04,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 08:05:04,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 08:05:04,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 08:05:04,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:05:04" (1/1) ... [2021-11-04 08:05:04,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:05:04" (1/1) ... [2021-11-04 08:05:05,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:05:04" (1/1) ... [2021-11-04 08:05:05,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:05:04" (1/1) ... [2021-11-04 08:05:05,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:05:04" (1/1) ... [2021-11-04 08:05:05,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:05:04" (1/1) ... [2021-11-04 08:05:05,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:05:04" (1/1) ... [2021-11-04 08:05:05,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 08:05:05,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 08:05:05,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 08:05:05,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 08:05:05,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:05:04" (1/1) ... [2021-11-04 08:05:05,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 08:05:05,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:05:05,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 08:05:05,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 08:05:05,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 08:05:05,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 08:05:05,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 08:05:05,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 08:05:05,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 08:05:05,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 08:05:05,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 08:05:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 08:05:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 08:05:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 08:05:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 08:05:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 08:05:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 08:05:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 08:05:05,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 08:05:08,737 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 08:05:08,738 INFO L299 CfgBuilder]: Removed 2282 assume(true) statements. [2021-11-04 08:05:08,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:05:08 BoogieIcfgContainer [2021-11-04 08:05:08,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 08:05:08,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 08:05:08,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 08:05:08,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 08:05:08,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 08:05:02" (1/3) ... [2021-11-04 08:05:08,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208f793a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:05:08, skipping insertion in model container [2021-11-04 08:05:08,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:05:04" (2/3) ... [2021-11-04 08:05:08,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208f793a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:05:08, skipping insertion in model container [2021-11-04 08:05:08,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:05:08" (3/3) ... [2021-11-04 08:05:08,749 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-11-04 08:05:08,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 08:05:08,754 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-04 08:05:08,800 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 08:05:08,805 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 08:05:08,806 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-04 08:05:08,859 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) [2021-11-04 08:05:08,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-04 08:05:08,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:05:08,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:05:08,884 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)] === [2021-11-04 08:05:08,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:05:08,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1766303631, now seen corresponding path program 1 times [2021-11-04 08:05:08,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:05:08,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33757483] [2021-11-04 08:05:08,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:05:08,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:05:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:05:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 08:05:09,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:05:09,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33757483] [2021-11-04 08:05:09,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33757483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:05:09,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:05:09,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 08:05:09,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386934157] [2021-11-04 08:05:09,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:05:09,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 08:05:09,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:05:09,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 08:05:09,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 08:05:09,393 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) [2021-11-04 08:05:12,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:05:12,717 INFO L93 Difference]: Finished difference Result 4164 states and 5649 transitions. [2021-11-04 08:05:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 08:05:12,721 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 [2021-11-04 08:05:12,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:05:12,755 INFO L225 Difference]: With dead ends: 4164 [2021-11-04 08:05:12,755 INFO L226 Difference]: Without dead ends: 2025 [2021-11-04 08:05:12,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 08:05:12,773 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2503.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3127.72ms IncrementalHoareTripleChecker+Time [2021-11-04 08:05:12,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 2735 Unknown, 0 Unchecked, 10.75ms Time], IncrementalHoareTripleChecker [0 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 3127.72ms Time] [2021-11-04 08:05:12,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2021-11-04 08:05:12,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 2025. [2021-11-04 08:05:12,888 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) [2021-11-04 08:05:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 2675 transitions. [2021-11-04 08:05:12,897 INFO L78 Accepts]: Start accepts. Automaton has 2025 states and 2675 transitions. Word has length 59 [2021-11-04 08:05:12,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:05:12,898 INFO L470 AbstractCegarLoop]: Abstraction has 2025 states and 2675 transitions. [2021-11-04 08:05:12,898 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) [2021-11-04 08:05:12,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2025 states and 2675 transitions. [2021-11-04 08:05:12,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-04 08:05:12,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:05:12,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:05:12,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 08:05:12,904 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)] === [2021-11-04 08:05:12,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:05:12,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1863285317, now seen corresponding path program 1 times [2021-11-04 08:05:12,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:05:12,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735786919] [2021-11-04 08:05:12,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:05:12,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:05:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:05:13,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 08:05:13,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:05:13,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735786919] [2021-11-04 08:05:13,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735786919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:05:13,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:05:13,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:05:13,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267272382] [2021-11-04 08:05:13,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:05:13,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:05:13,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:05:13,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:05:13,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:05:13,154 INFO L87 Difference]: Start difference. First operand 2025 states and 2675 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) 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) [2021-11-04 08:05:18,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:05:18,239 INFO L93 Difference]: Finished difference Result 4024 states and 5325 transitions. [2021-11-04 08:05:18,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:05:18,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) 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 [2021-11-04 08:05:18,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:05:18,250 INFO L225 Difference]: With dead ends: 4024 [2021-11-04 08:05:18,250 INFO L226 Difference]: Without dead ends: 2027 [2021-11-04 08:05:18,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:05:18,258 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 5348 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4090.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.11ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4904.43ms IncrementalHoareTripleChecker+Time [2021-11-04 08:05:18,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5350 Unknown, 0 Unchecked, 17.11ms Time], IncrementalHoareTripleChecker [2 Valid, 5348 Invalid, 0 Unknown, 0 Unchecked, 4904.43ms Time] [2021-11-04 08:05:18,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2021-11-04 08:05:18,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2027. [2021-11-04 08:05:18,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 2015 states have (on average 1.3285359801488834) internal successors, (2677), 2026 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:05:18,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 2677 transitions. [2021-11-04 08:05:18,312 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 2677 transitions. Word has length 59 [2021-11-04 08:05:18,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:05:18,312 INFO L470 AbstractCegarLoop]: Abstraction has 2027 states and 2677 transitions. [2021-11-04 08:05:18,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) 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) [2021-11-04 08:05:18,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 2677 transitions. [2021-11-04 08:05:18,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-04 08:05:18,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:05:18,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:05:18,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 08:05:18,319 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 08:05:18,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:05:18,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1043136515, now seen corresponding path program 1 times [2021-11-04 08:05:18,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:05:18,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692409439] [2021-11-04 08:05:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:05:18,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:05:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:05:18,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 08:05:18,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:05:18,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692409439] [2021-11-04 08:05:18,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692409439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:05:18,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:05:18,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:05:18,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350617077] [2021-11-04 08:05:18,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:05:18,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:05:18,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:05:18,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:05:18,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 08:05:18,598 INFO L87 Difference]: Start difference. First operand 2027 states and 2677 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) [2021-11-04 08:05:26,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:05:26,993 INFO L93 Difference]: Finished difference Result 7774 states and 10264 transitions. [2021-11-04 08:05:26,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 08:05:26,998 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 [2021-11-04 08:05:26,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:05:27,023 INFO L225 Difference]: With dead ends: 7774 [2021-11-04 08:05:27,024 INFO L226 Difference]: Without dead ends: 5782 [2021-11-04 08:05:27,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.85ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:05:27,031 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3684 mSDsluCounter, 5400 mSDsCounter, 0 mSdLazyCounter, 10679 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6551.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3684 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.63ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 10679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8080.17ms IncrementalHoareTripleChecker+Time [2021-11-04 08:05:27,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3684 Valid, 0 Invalid, 10690 Unknown, 0 Unchecked, 21.63ms Time], IncrementalHoareTripleChecker [11 Valid, 10679 Invalid, 0 Unknown, 0 Unchecked, 8080.17ms Time] [2021-11-04 08:05:27,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5782 states. [2021-11-04 08:05:27,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5782 to 3017. [2021-11-04 08:05:27,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3017 states, 3005 states have (on average 1.3251247920133111) internal successors, (3982), 3016 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:05:27,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 3982 transitions. [2021-11-04 08:05:27,189 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 3982 transitions. Word has length 61 [2021-11-04 08:05:27,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:05:27,192 INFO L470 AbstractCegarLoop]: Abstraction has 3017 states and 3982 transitions. [2021-11-04 08:05:27,192 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) [2021-11-04 08:05:27,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 3982 transitions. [2021-11-04 08:05:27,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-04 08:05:27,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:05:27,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:05:27,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 08:05:27,199 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 08:05:27,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:05:27,200 INFO L85 PathProgramCache]: Analyzing trace with hash 184258671, now seen corresponding path program 1 times [2021-11-04 08:05:27,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:05:27,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231818354] [2021-11-04 08:05:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:05:27,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:05:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:05:27,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 08:05:27,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:05:27,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231818354] [2021-11-04 08:05:27,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231818354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:05:27,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:05:27,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:05:27,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632758048] [2021-11-04 08:05:27,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:05:27,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:05:27,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:05:27,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:05:27,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 08:05:27,462 INFO L87 Difference]: Start difference. First operand 3017 states and 3982 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) [2021-11-04 08:05:35,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:05:35,700 INFO L93 Difference]: Finished difference Result 12724 states and 16791 transitions. [2021-11-04 08:05:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 08:05:35,703 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 [2021-11-04 08:05:35,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:05:35,744 INFO L225 Difference]: With dead ends: 12724 [2021-11-04 08:05:35,744 INFO L226 Difference]: Without dead ends: 9742 [2021-11-04 08:05:35,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:05:35,759 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4941 mSDsluCounter, 5276 mSDsCounter, 0 mSdLazyCounter, 9295 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6392.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4941 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.19ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 9295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7843.62ms IncrementalHoareTripleChecker+Time [2021-11-04 08:05:35,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4941 Valid, 0 Invalid, 9308 Unknown, 0 Unchecked, 24.19ms Time], IncrementalHoareTripleChecker [13 Valid, 9295 Invalid, 0 Unknown, 0 Unchecked, 7843.62ms Time] [2021-11-04 08:05:35,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9742 states. [2021-11-04 08:05:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9742 to 5732. [2021-11-04 08:05:35,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5732 states, 5720 states have (on average 1.3255244755244755) internal successors, (7582), 5731 states have internal predecessors, (7582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:05:35,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5732 states to 5732 states and 7582 transitions. [2021-11-04 08:05:35,956 INFO L78 Accepts]: Start accepts. Automaton has 5732 states and 7582 transitions. Word has length 62 [2021-11-04 08:05:35,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:05:35,956 INFO L470 AbstractCegarLoop]: Abstraction has 5732 states and 7582 transitions. [2021-11-04 08:05:35,956 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) [2021-11-04 08:05:35,957 INFO L276 IsEmpty]: Start isEmpty. Operand 5732 states and 7582 transitions. [2021-11-04 08:05:35,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-04 08:05:35,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:05:35,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:05:35,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 08:05:35,961 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 08:05:35,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:05:35,961 INFO L85 PathProgramCache]: Analyzing trace with hash -671149870, now seen corresponding path program 1 times [2021-11-04 08:05:35,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:05:35,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942873724] [2021-11-04 08:05:35,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:05:35,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:05:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:05:36,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 08:05:36,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:05:36,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942873724] [2021-11-04 08:05:36,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942873724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:05:36,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:05:36,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:05:36,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064687235] [2021-11-04 08:05:36,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:05:36,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:05:36,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:05:36,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:05:36,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 08:05:36,186 INFO L87 Difference]: Start difference. First operand 5732 states and 7582 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:05:44,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:05:44,059 INFO L93 Difference]: Finished difference Result 24598 states and 32498 transitions. [2021-11-04 08:05:44,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 08:05:44,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-04 08:05:44,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:05:44,111 INFO L225 Difference]: With dead ends: 24598 [2021-11-04 08:05:44,112 INFO L226 Difference]: Without dead ends: 18901 [2021-11-04 08:05:44,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:05:44,134 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4947 mSDsluCounter, 5276 mSDsCounter, 0 mSdLazyCounter, 9294 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6046.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.05ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 9294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7441.44ms IncrementalHoareTripleChecker+Time [2021-11-04 08:05:44,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 0 Invalid, 9307 Unknown, 0 Unchecked, 20.05ms Time], IncrementalHoareTripleChecker [13 Valid, 9294 Invalid, 0 Unknown, 0 Unchecked, 7441.44ms Time] [2021-11-04 08:05:44,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18901 states. [2021-11-04 08:05:44,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18901 to 10922. [2021-11-04 08:05:44,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10922 states, 10910 states have (on average 1.3250229147571035) internal successors, (14456), 10921 states have internal predecessors, (14456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:05:44,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10922 states to 10922 states and 14456 transitions. [2021-11-04 08:05:44,587 INFO L78 Accepts]: Start accepts. Automaton has 10922 states and 14456 transitions. Word has length 63 [2021-11-04 08:05:44,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:05:44,590 INFO L470 AbstractCegarLoop]: Abstraction has 10922 states and 14456 transitions. [2021-11-04 08:05:44,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:05:44,591 INFO L276 IsEmpty]: Start isEmpty. Operand 10922 states and 14456 transitions. [2021-11-04 08:05:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-04 08:05:44,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:05:44,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:05:44,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 08:05:44,595 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 08:05:44,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:05:44,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1561074808, now seen corresponding path program 1 times [2021-11-04 08:05:44,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:05:44,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170270536] [2021-11-04 08:05:44,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:05:44,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:05:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:05:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 08:05:44,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:05:44,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170270536] [2021-11-04 08:05:44,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170270536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:05:44,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:05:44,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:05:44,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547187473] [2021-11-04 08:05:44,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:05:44,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:05:44,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:05:44,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:05:44,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:05:44,728 INFO L87 Difference]: Start difference. First operand 10922 states and 14456 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:05:50,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:05:50,364 INFO L93 Difference]: Finished difference Result 26897 states and 35727 transitions. [2021-11-04 08:05:50,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:05:50,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-04 08:05:50,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:05:50,402 INFO L225 Difference]: With dead ends: 26897 [2021-11-04 08:05:50,403 INFO L226 Difference]: Without dead ends: 16010 [2021-11-04 08:05:50,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:05:50,424 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1714 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 5964 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4310.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.28ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 5964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5278.07ms IncrementalHoareTripleChecker+Time [2021-11-04 08:05:50,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1714 Valid, 0 Invalid, 5971 Unknown, 0 Unchecked, 8.28ms Time], IncrementalHoareTripleChecker [7 Valid, 5964 Invalid, 0 Unknown, 0 Unchecked, 5278.07ms Time] [2021-11-04 08:05:50,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16010 states. [2021-11-04 08:05:50,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16010 to 15218. [2021-11-04 08:05:50,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15218 states, 15206 states have (on average 1.3313165855583322) internal successors, (20244), 15217 states have internal predecessors, (20244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:05:50,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15218 states to 15218 states and 20244 transitions. [2021-11-04 08:05:50,844 INFO L78 Accepts]: Start accepts. Automaton has 15218 states and 20244 transitions. Word has length 63 [2021-11-04 08:05:50,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:05:50,845 INFO L470 AbstractCegarLoop]: Abstraction has 15218 states and 20244 transitions. [2021-11-04 08:05:50,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:05:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 15218 states and 20244 transitions. [2021-11-04 08:05:50,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-04 08:05:50,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:05:50,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:05:50,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 08:05:50,847 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 08:05:50,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:05:50,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1419010018, now seen corresponding path program 1 times [2021-11-04 08:05:50,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:05:50,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562518780] [2021-11-04 08:05:50,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:05:50,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:05:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:05:51,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 08:05:51,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:05:51,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562518780] [2021-11-04 08:05:51,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562518780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:05:51,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:05:51,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:05:51,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316942783] [2021-11-04 08:05:51,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:05:51,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:05:51,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:05:51,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:05:51,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 08:05:51,038 INFO L87 Difference]: Start difference. First operand 15218 states and 20244 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:06:00,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:06:00,259 INFO L93 Difference]: Finished difference Result 62290 states and 82678 transitions. [2021-11-04 08:06:00,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 08:06:00,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-04 08:06:00,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:06:00,363 INFO L225 Difference]: With dead ends: 62290 [2021-11-04 08:06:00,363 INFO L226 Difference]: Without dead ends: 47107 [2021-11-04 08:06:00,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.46ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:06:00,413 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4953 mSDsluCounter, 5276 mSDsCounter, 0 mSdLazyCounter, 9293 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6827.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4953 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.94ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 9293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8351.73ms IncrementalHoareTripleChecker+Time [2021-11-04 08:06:00,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4953 Valid, 0 Invalid, 9306 Unknown, 0 Unchecked, 19.94ms Time], IncrementalHoareTripleChecker [13 Valid, 9293 Invalid, 0 Unknown, 0 Unchecked, 8351.73ms Time] [2021-11-04 08:06:00,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47107 states. [2021-11-04 08:06:01,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47107 to 28449. [2021-11-04 08:06:01,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28449 states, 28437 states have (on average 1.3300277807082321) internal successors, (37822), 28448 states have internal predecessors, (37822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:06:01,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28449 states to 28449 states and 37822 transitions. [2021-11-04 08:06:01,381 INFO L78 Accepts]: Start accepts. Automaton has 28449 states and 37822 transitions. Word has length 64 [2021-11-04 08:06:01,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:06:01,381 INFO L470 AbstractCegarLoop]: Abstraction has 28449 states and 37822 transitions. [2021-11-04 08:06:01,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:06:01,382 INFO L276 IsEmpty]: Start isEmpty. Operand 28449 states and 37822 transitions. [2021-11-04 08:06:01,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-04 08:06:01,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:06:01,383 INFO L514 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, 1, 1] [2021-11-04 08:06:01,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 08:06:01,384 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 08:06:01,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:06:01,385 INFO L85 PathProgramCache]: Analyzing trace with hash 547648120, now seen corresponding path program 1 times [2021-11-04 08:06:01,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:06:01,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720562866] [2021-11-04 08:06:01,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:06:01,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:06:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:06:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 08:06:01,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:06:01,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720562866] [2021-11-04 08:06:01,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720562866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:06:01,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:06:01,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 08:06:01,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141279303] [2021-11-04 08:06:01,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:06:01,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 08:06:01,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:06:01,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 08:06:01,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:06:01,575 INFO L87 Difference]: Start difference. First operand 28449 states and 37822 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:06:14,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:06:14,945 INFO L93 Difference]: Finished difference Result 90809 states and 120570 transitions. [2021-11-04 08:06:14,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-04 08:06:14,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 70 [2021-11-04 08:06:14,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:06:15,061 INFO L225 Difference]: With dead ends: 90809 [2021-11-04 08:06:15,061 INFO L226 Difference]: Without dead ends: 62395 [2021-11-04 08:06:15,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.25ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-04 08:06:15,117 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7540 mSDsluCounter, 11201 mSDsCounter, 0 mSdLazyCounter, 16275 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9826.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7540 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.17ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 16275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12127.99ms IncrementalHoareTripleChecker+Time [2021-11-04 08:06:15,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7540 Valid, 0 Invalid, 16307 Unknown, 0 Unchecked, 31.17ms Time], IncrementalHoareTripleChecker [32 Valid, 16275 Invalid, 0 Unknown, 0 Unchecked, 12127.99ms Time] [2021-11-04 08:06:15,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62395 states. [2021-11-04 08:06:16,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62395 to 28529. [2021-11-04 08:06:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28529 states, 28517 states have (on average 1.329101939194165) internal successors, (37902), 28528 states have internal predecessors, (37902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:06:16,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28529 states to 28529 states and 37902 transitions. [2021-11-04 08:06:16,108 INFO L78 Accepts]: Start accepts. Automaton has 28529 states and 37902 transitions. Word has length 70 [2021-11-04 08:06:16,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:06:16,109 INFO L470 AbstractCegarLoop]: Abstraction has 28529 states and 37902 transitions. [2021-11-04 08:06:16,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:06:16,109 INFO L276 IsEmpty]: Start isEmpty. Operand 28529 states and 37902 transitions. [2021-11-04 08:06:16,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-04 08:06:16,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:06:16,112 INFO L514 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, 1, 1] [2021-11-04 08:06:16,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 08:06:16,113 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)] === [2021-11-04 08:06:16,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:06:16,113 INFO L85 PathProgramCache]: Analyzing trace with hash 698421725, now seen corresponding path program 1 times [2021-11-04 08:06:16,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:06:16,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776752255] [2021-11-04 08:06:16,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:06:16,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:06:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:06:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 08:06:16,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:06:16,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776752255] [2021-11-04 08:06:16,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776752255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:06:16,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:06:16,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:06:16,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547661406] [2021-11-04 08:06:16,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:06:16,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:06:16,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:06:16,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:06:16,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:06:16,280 INFO L87 Difference]: Start difference. First operand 28529 states and 37902 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:06:24,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:06:24,556 INFO L93 Difference]: Finished difference Result 81053 states and 107872 transitions. [2021-11-04 08:06:24,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:06:24,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2021-11-04 08:06:24,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:06:24,678 INFO L225 Difference]: With dead ends: 81053 [2021-11-04 08:06:24,679 INFO L226 Difference]: Without dead ends: 52559 [2021-11-04 08:06:24,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:06:24,718 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2378 mSDsluCounter, 2628 mSDsCounter, 0 mSdLazyCounter, 7500 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5667.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.62ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6954.77ms IncrementalHoareTripleChecker+Time [2021-11-04 08:06:24,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2378 Valid, 0 Invalid, 7502 Unknown, 0 Unchecked, 9.62ms Time], IncrementalHoareTripleChecker [2 Valid, 7500 Invalid, 0 Unknown, 0 Unchecked, 6954.77ms Time] [2021-11-04 08:06:24,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52559 states. [2021-11-04 08:06:25,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52559 to 52503. [2021-11-04 08:06:25,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52503 states, 52491 states have (on average 1.3322474328932579) internal successors, (69931), 52502 states have internal predecessors, (69931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:06:26,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52503 states to 52503 states and 69931 transitions. [2021-11-04 08:06:26,069 INFO L78 Accepts]: Start accepts. Automaton has 52503 states and 69931 transitions. Word has length 158 [2021-11-04 08:06:26,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:06:26,069 INFO L470 AbstractCegarLoop]: Abstraction has 52503 states and 69931 transitions. [2021-11-04 08:06:26,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:06:26,069 INFO L276 IsEmpty]: Start isEmpty. Operand 52503 states and 69931 transitions. [2021-11-04 08:06:26,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-04 08:06:26,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:06:26,073 INFO L514 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] [2021-11-04 08:06:26,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 08:06:26,074 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)] === [2021-11-04 08:06:26,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:06:26,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1406600435, now seen corresponding path program 1 times [2021-11-04 08:06:26,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:06:26,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903587479] [2021-11-04 08:06:26,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:06:26,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:06:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:06:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-04 08:06:26,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:06:26,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903587479] [2021-11-04 08:06:26,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903587479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:06:26,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:06:26,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:06:26,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348592105] [2021-11-04 08:06:26,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:06:26,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:06:26,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:06:26,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:06:26,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:06:26,446 INFO L87 Difference]: Start difference. First operand 52503 states and 69931 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:06:31,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:06:31,676 INFO L93 Difference]: Finished difference Result 104971 states and 139825 transitions. [2021-11-04 08:06:31,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:06:31,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 177 [2021-11-04 08:06:31,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:06:31,774 INFO L225 Difference]: With dead ends: 104971 [2021-11-04 08:06:31,774 INFO L226 Difference]: Without dead ends: 52503 [2021-11-04 08:06:31,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:06:31,823 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2671 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2675 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3081.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2671 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.54ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3779.18ms IncrementalHoareTripleChecker+Time [2021-11-04 08:06:31,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2671 Valid, 0 Invalid, 2676 Unknown, 0 Unchecked, 4.54ms Time], IncrementalHoareTripleChecker [1 Valid, 2675 Invalid, 0 Unknown, 0 Unchecked, 3779.18ms Time] [2021-11-04 08:06:31,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52503 states. [2021-11-04 08:06:33,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52503 to 52503. [2021-11-04 08:06:33,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52503 states, 52491 states have (on average 1.3316378045760227) internal successors, (69899), 52502 states have internal predecessors, (69899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:06:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52503 states to 52503 states and 69899 transitions. [2021-11-04 08:06:33,399 INFO L78 Accepts]: Start accepts. Automaton has 52503 states and 69899 transitions. Word has length 177 [2021-11-04 08:06:33,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:06:33,400 INFO L470 AbstractCegarLoop]: Abstraction has 52503 states and 69899 transitions. [2021-11-04 08:06:33,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:06:33,400 INFO L276 IsEmpty]: Start isEmpty. Operand 52503 states and 69899 transitions. [2021-11-04 08:06:33,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-04 08:06:33,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:06:33,405 INFO L514 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] [2021-11-04 08:06:33,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 08:06:33,405 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)] === [2021-11-04 08:06:33,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:06:33,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1921502361, now seen corresponding path program 1 times [2021-11-04 08:06:33,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:06:33,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632960045] [2021-11-04 08:06:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:06:33,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:06:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:06:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 08:06:33,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:06:33,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632960045] [2021-11-04 08:06:33,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632960045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:06:33,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:06:33,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:06:33,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327505584] [2021-11-04 08:06:33,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:06:33,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:06:33,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:06:33,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:06:33,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:06:33,580 INFO L87 Difference]: Start difference. First operand 52503 states and 69899 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:06:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:06:44,045 INFO L93 Difference]: Finished difference Result 155423 states and 206935 transitions. [2021-11-04 08:06:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:06:44,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-11-04 08:06:44,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:06:44,273 INFO L225 Difference]: With dead ends: 155423 [2021-11-04 08:06:44,274 INFO L226 Difference]: Without dead ends: 102955 [2021-11-04 08:06:44,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:06:44,345 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2511 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 7799 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6243.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2511 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.40ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7747.08ms IncrementalHoareTripleChecker+Time [2021-11-04 08:06:44,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2511 Valid, 0 Invalid, 7802 Unknown, 0 Unchecked, 10.40ms Time], IncrementalHoareTripleChecker [3 Valid, 7799 Invalid, 0 Unknown, 0 Unchecked, 7747.08ms Time] [2021-11-04 08:06:44,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102955 states. [2021-11-04 08:06:46,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102955 to 52519. [2021-11-04 08:06:46,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52519 states, 52507 states have (on average 1.3315367474812883) internal successors, (69915), 52518 states have internal predecessors, (69915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:06:46,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52519 states to 52519 states and 69915 transitions. [2021-11-04 08:06:46,479 INFO L78 Accepts]: Start accepts. Automaton has 52519 states and 69915 transitions. Word has length 190 [2021-11-04 08:06:46,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:06:46,479 INFO L470 AbstractCegarLoop]: Abstraction has 52519 states and 69915 transitions. [2021-11-04 08:06:46,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:06:46,479 INFO L276 IsEmpty]: Start isEmpty. Operand 52519 states and 69915 transitions. [2021-11-04 08:06:46,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-04 08:06:46,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:06:46,483 INFO L514 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] [2021-11-04 08:06:46,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-04 08:06:46,483 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 08:06:46,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:06:46,484 INFO L85 PathProgramCache]: Analyzing trace with hash 46589654, now seen corresponding path program 1 times [2021-11-04 08:06:46,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:06:46,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829715896] [2021-11-04 08:06:46,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:06:46,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:06:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:06:46,658 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 08:06:46,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:06:46,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829715896] [2021-11-04 08:06:46,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829715896] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:06:46,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954637074] [2021-11-04 08:06:46,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:06:46,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:06:46,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:06:46,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:06:46,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 08:06:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:06:47,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 3598 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 08:06:47,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 08:06:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 08:06:47,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 08:06:47,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954637074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:06:47,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 08:06:47,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 08:06:47,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105953824] [2021-11-04 08:06:47,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:06:47,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:06:47,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:06:47,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:06:47,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:06:47,974 INFO L87 Difference]: Start difference. First operand 52519 states and 69915 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:06:59,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:06:59,234 INFO L93 Difference]: Finished difference Result 157007 states and 209191 transitions. [2021-11-04 08:06:59,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:06:59,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 205 [2021-11-04 08:06:59,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:06:59,468 INFO L225 Difference]: With dead ends: 157007 [2021-11-04 08:06:59,468 INFO L226 Difference]: Without dead ends: 104523 [2021-11-04 08:06:59,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.68ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:06:59,533 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2582 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 7648 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6528.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.06ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 7648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8094.16ms IncrementalHoareTripleChecker+Time [2021-11-04 08:06:59,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2582 Valid, 0 Invalid, 7685 Unknown, 0 Unchecked, 11.06ms Time], IncrementalHoareTripleChecker [37 Valid, 7648 Invalid, 0 Unknown, 0 Unchecked, 8094.16ms Time] [2021-11-04 08:06:59,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104523 states. [2021-11-04 08:07:01,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104523 to 53191. [2021-11-04 08:07:01,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53191 states, 53179 states have (on average 1.327347261136915) internal successors, (70587), 53190 states have internal predecessors, (70587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:07:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53191 states to 53191 states and 70587 transitions. [2021-11-04 08:07:01,713 INFO L78 Accepts]: Start accepts. Automaton has 53191 states and 70587 transitions. Word has length 205 [2021-11-04 08:07:01,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:07:01,713 INFO L470 AbstractCegarLoop]: Abstraction has 53191 states and 70587 transitions. [2021-11-04 08:07:01,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:07:01,714 INFO L276 IsEmpty]: Start isEmpty. Operand 53191 states and 70587 transitions. [2021-11-04 08:07:01,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-04 08:07:01,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:07:01,718 INFO L514 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] [2021-11-04 08:07:01,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-04 08:07:01,931 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,SelfDestructingSolverStorable11 [2021-11-04 08:07:01,932 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 08:07:01,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:07:01,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1133299051, now seen corresponding path program 1 times [2021-11-04 08:07:01,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:07:01,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489414668] [2021-11-04 08:07:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:07:01,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:07:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:07:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 08:07:02,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:07:02,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489414668] [2021-11-04 08:07:02,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489414668] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:07:02,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413245029] [2021-11-04 08:07:02,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:07:02,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:07:02,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:07:02,264 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:07:02,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 08:07:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:07:03,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 3706 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 08:07:03,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 08:07:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-04 08:07:03,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 08:07:03,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413245029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:07:03,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 08:07:03,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 08:07:03,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523251601] [2021-11-04 08:07:03,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:07:03,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:07:03,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:07:03,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:07:03,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:07:03,435 INFO L87 Difference]: Start difference. First operand 53191 states and 70587 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:07:12,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:07:12,693 INFO L93 Difference]: Finished difference Result 123571 states and 165129 transitions. [2021-11-04 08:07:12,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:07:12,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 205 [2021-11-04 08:07:12,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:07:12,817 INFO L225 Difference]: With dead ends: 123571 [2021-11-04 08:07:12,817 INFO L226 Difference]: Without dead ends: 70415 [2021-11-04 08:07:12,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.33ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:07:12,862 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1981 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 6364 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5546.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.42ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 6364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6905.80ms IncrementalHoareTripleChecker+Time [2021-11-04 08:07:12,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1981 Valid, 0 Invalid, 6403 Unknown, 0 Unchecked, 9.42ms Time], IncrementalHoareTripleChecker [39 Valid, 6364 Invalid, 0 Unknown, 0 Unchecked, 6905.80ms Time] [2021-11-04 08:07:12,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70415 states. [2021-11-04 08:07:15,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70415 to 68831. [2021-11-04 08:07:15,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68831 states, 68819 states have (on average 1.335140004940496) internal successors, (91883), 68830 states have internal predecessors, (91883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:07:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68831 states to 68831 states and 91883 transitions. [2021-11-04 08:07:15,211 INFO L78 Accepts]: Start accepts. Automaton has 68831 states and 91883 transitions. Word has length 205 [2021-11-04 08:07:15,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:07:15,211 INFO L470 AbstractCegarLoop]: Abstraction has 68831 states and 91883 transitions. [2021-11-04 08:07:15,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:07:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand 68831 states and 91883 transitions. [2021-11-04 08:07:15,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-04 08:07:15,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:07:15,216 INFO L514 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, 1, 1] [2021-11-04 08:07:15,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 08:07:15,441 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,SelfDestructingSolverStorable12 [2021-11-04 08:07:15,442 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 08:07:15,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:07:15,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1656992276, now seen corresponding path program 1 times [2021-11-04 08:07:15,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:07:15,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063667975] [2021-11-04 08:07:15,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:07:15,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:07:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:07:15,603 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 08:07:15,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:07:15,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063667975] [2021-11-04 08:07:15,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063667975] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:07:15,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740017250] [2021-11-04 08:07:15,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:07:15,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:07:15,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:07:15,606 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:07:15,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 08:07:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:07:16,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 3632 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 08:07:16,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 08:07:16,742 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 08:07:16,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 08:07:16,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740017250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:07:16,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 08:07:16,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-04 08:07:16,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000007363] [2021-11-04 08:07:16,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:07:16,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:07:16,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:07:16,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:07:16,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:07:16,745 INFO L87 Difference]: Start difference. First operand 68831 states and 91883 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:07:23,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:07:23,254 INFO L93 Difference]: Finished difference Result 137627 states and 183729 transitions. [2021-11-04 08:07:23,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:07:23,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 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 220 [2021-11-04 08:07:23,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:07:23,380 INFO L225 Difference]: With dead ends: 137627 [2021-11-04 08:07:23,380 INFO L226 Difference]: Without dead ends: 68831 [2021-11-04 08:07:23,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.23ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:07:23,438 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2525 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2673 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3234.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4024.40ms IncrementalHoareTripleChecker+Time [2021-11-04 08:07:23,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2525 Valid, 0 Invalid, 2673 Unknown, 0 Unchecked, 4.88ms Time], IncrementalHoareTripleChecker [0 Valid, 2673 Invalid, 0 Unknown, 0 Unchecked, 4024.40ms Time] [2021-11-04 08:07:23,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68831 states. [2021-11-04 08:07:25,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68831 to 68831. [2021-11-04 08:07:25,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68831 states, 68819 states have (on average 1.3349075110071347) internal successors, (91867), 68830 states have internal predecessors, (91867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:07:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68831 states to 68831 states and 91867 transitions. [2021-11-04 08:07:25,754 INFO L78 Accepts]: Start accepts. Automaton has 68831 states and 91867 transitions. Word has length 220 [2021-11-04 08:07:25,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:07:25,754 INFO L470 AbstractCegarLoop]: Abstraction has 68831 states and 91867 transitions. [2021-11-04 08:07:25,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:07:25,754 INFO L276 IsEmpty]: Start isEmpty. Operand 68831 states and 91867 transitions. [2021-11-04 08:07:25,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-04 08:07:25,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:07:25,760 INFO L514 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, 1, 1] [2021-11-04 08:07:25,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-04 08:07:25,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:07:25,976 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 08:07:25,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:07:25,976 INFO L85 PathProgramCache]: Analyzing trace with hash -703052118, now seen corresponding path program 1 times [2021-11-04 08:07:25,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:07:25,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500560550] [2021-11-04 08:07:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:07:25,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:07:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:07:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 08:07:26,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:07:26,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500560550] [2021-11-04 08:07:26,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500560550] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:07:26,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147659814] [2021-11-04 08:07:26,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:07:26,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:07:26,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:07:26,167 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:07:26,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 08:07:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:07:26,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 3630 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 08:07:26,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 08:07:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 08:07:27,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 08:07:27,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147659814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:07:27,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 08:07:27,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-04 08:07:27,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214356122] [2021-11-04 08:07:27,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:07:27,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:07:27,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:07:27,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:07:27,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:07:27,343 INFO L87 Difference]: Start difference. First operand 68831 states and 91867 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:07:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:07:40,558 INFO L93 Difference]: Finished difference Result 206375 states and 275447 transitions. [2021-11-04 08:07:40,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:07:40,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 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 220 [2021-11-04 08:07:40,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:07:40,823 INFO L225 Difference]: With dead ends: 206375 [2021-11-04 08:07:40,823 INFO L226 Difference]: Without dead ends: 137579 [2021-11-04 08:07:41,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.46ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:07:41,086 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2547 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 7617 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6809.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2547 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.14ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8559.12ms IncrementalHoareTripleChecker+Time [2021-11-04 08:07:41,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2547 Valid, 0 Invalid, 7619 Unknown, 0 Unchecked, 11.14ms Time], IncrementalHoareTripleChecker [2 Valid, 7617 Invalid, 0 Unknown, 0 Unchecked, 8559.12ms Time] [2021-11-04 08:07:41,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137579 states. [2021-11-04 08:07:45,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137579 to 137539. [2021-11-04 08:07:45,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137539 states, 137527 states have (on average 1.3348142546554496) internal successors, (183573), 137538 states have internal predecessors, (183573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:07:46,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137539 states to 137539 states and 183573 transitions. [2021-11-04 08:07:46,010 INFO L78 Accepts]: Start accepts. Automaton has 137539 states and 183573 transitions. Word has length 220 [2021-11-04 08:07:46,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:07:46,010 INFO L470 AbstractCegarLoop]: Abstraction has 137539 states and 183573 transitions. [2021-11-04 08:07:46,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:07:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand 137539 states and 183573 transitions. [2021-11-04 08:07:46,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-04 08:07:46,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:07:46,016 INFO L514 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, 1, 1, 1, 1] [2021-11-04 08:07:46,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-04 08:07:46,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-04 08:07:46,217 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 08:07:46,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:07:46,218 INFO L85 PathProgramCache]: Analyzing trace with hash 745766479, now seen corresponding path program 1 times [2021-11-04 08:07:46,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:07:46,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674050771] [2021-11-04 08:07:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:07:46,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:07:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:07:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 08:07:46,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:07:46,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674050771] [2021-11-04 08:07:46,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674050771] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:07:46,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388265639] [2021-11-04 08:07:46,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:07:46,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:07:46,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:07:46,385 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:07:46,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-04 08:07:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:07:47,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 3634 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 08:07:47,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 08:07:47,803 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-04 08:07:47,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 08:07:47,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388265639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:07:47,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 08:07:47,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-04 08:07:47,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523290569] [2021-11-04 08:07:47,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:07:47,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:07:47,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:07:47,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:07:47,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:07:47,805 INFO L87 Difference]: Start difference. First operand 137539 states and 183573 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:07:56,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:07:56,949 INFO L93 Difference]: Finished difference Result 137539 states and 183573 transitions. [2021-11-04 08:07:56,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:07:56,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 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 222 [2021-11-04 08:07:56,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:07:57,243 INFO L225 Difference]: With dead ends: 137539 [2021-11-04 08:07:57,243 INFO L226 Difference]: Without dead ends: 137531 [2021-11-04 08:07:57,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.13ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:07:57,287 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1158 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 3948 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3964.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.46ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4957.63ms IncrementalHoareTripleChecker+Time [2021-11-04 08:07:57,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1158 Valid, 0 Invalid, 3960 Unknown, 0 Unchecked, 6.46ms Time], IncrementalHoareTripleChecker [12 Valid, 3948 Invalid, 0 Unknown, 0 Unchecked, 4957.63ms Time] [2021-11-04 08:07:57,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137531 states.