./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-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.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 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 16:34:00,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 16:34:00,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 16:34:00,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 16:34:00,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 16:34:00,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 16:34:00,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 16:34:00,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 16:34:00,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 16:34:00,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 16:34:00,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 16:34:00,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 16:34:00,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 16:34:00,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 16:34:00,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 16:34:00,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 16:34:00,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 16:34:00,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 16:34:00,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 16:34:00,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 16:34:00,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 16:34:00,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 16:34:00,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 16:34:00,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 16:34:00,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 16:34:00,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 16:34:00,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 16:34:00,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 16:34:00,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 16:34:00,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 16:34:00,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 16:34:00,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 16:34:00,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 16:34:00,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 16:34:00,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 16:34:00,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 16:34:00,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 16:34:00,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 16:34:00,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 16:34:00,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 16:34:00,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 16:34:00,261 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 16:34:00,276 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 16:34:00,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 16:34:00,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 16:34:00,276 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 16:34:00,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 16:34:00,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 16:34:00,278 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 16:34:00,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 16:34:00,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 16:34:00,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 16:34:00,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 16:34:00,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 16:34:00,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 16:34:00,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 16:34:00,279 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 16:34:00,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 16:34:00,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 16:34:00,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 16:34:00,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 16:34:00,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:34:00,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 16:34:00,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 16:34:00,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 16:34:00,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 16:34:00,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 16:34:00,281 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 16:34:00,281 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 16:34:00,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 16:34:00,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 16:34:00,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad [2021-11-06 16:34:00,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 16:34:00,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 16:34:00,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 16:34:00,471 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 16:34:00,472 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 16:34:00,473 INFO L432 ainManager$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-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-11-06 16:34:00,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5821f599/42560c41ccd248aa86c7e5fdeebf2625/FLAG7e178ef60 [2021-11-06 16:34:01,169 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 16:34:01,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-11-06 16:34:01,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5821f599/42560c41ccd248aa86c7e5fdeebf2625/FLAG7e178ef60 [2021-11-06 16:34:01,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5821f599/42560c41ccd248aa86c7e5fdeebf2625 [2021-11-06 16:34:01,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 16:34:01,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 16:34:01,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 16:34:01,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 16:34:01,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 16:34:01,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:34:01" (1/1) ... [2021-11-06 16:34:01,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42975c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:34:01, skipping insertion in model container [2021-11-06 16:34:01,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:34:01" (1/1) ... [2021-11-06 16:34:01,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 16:34:01,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 16:34:02,487 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-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2021-11-06 16:34:02,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:34:02,593 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 16:34:02,809 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-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2021-11-06 16:34:02,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:34:02,873 INFO L208 MainTranslator]: Completed translation [2021-11-06 16:34:02,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:34:02 WrapperNode [2021-11-06 16:34:02,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 16:34:02,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 16:34:02,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 16:34:02,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 16:34:02,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:34:02" (1/1) ... [2021-11-06 16:34:02,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:34:02" (1/1) ... [2021-11-06 16:34:03,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 16:34:03,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 16:34:03,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 16:34:03,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 16:34:03,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:34:02" (1/1) ... [2021-11-06 16:34:03,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:34:02" (1/1) ... [2021-11-06 16:34:03,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:34:02" (1/1) ... [2021-11-06 16:34:03,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:34:02" (1/1) ... [2021-11-06 16:34:03,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:34:02" (1/1) ... [2021-11-06 16:34:03,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:34:02" (1/1) ... [2021-11-06 16:34:03,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:34:02" (1/1) ... [2021-11-06 16:34:03,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 16:34:03,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 16:34:03,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 16:34:03,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 16:34:03,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:34:02" (1/1) ... [2021-11-06 16:34:03,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:34:03,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:34:03,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 16:34:03,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 16:34:03,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 16:34:03,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 16:34:03,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 16:34:03,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 16:34:03,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 16:34:03,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 16:34:03,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 16:34:03,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 16:34:03,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 16:34:03,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 16:34:03,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 16:34:22,524 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 16:34:22,525 INFO L299 CfgBuilder]: Removed 1242 assume(true) statements. [2021-11-06 16:34:22,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:34:22 BoogieIcfgContainer [2021-11-06 16:34:22,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 16:34:22,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 16:34:22,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 16:34:22,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 16:34:22,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 04:34:01" (1/3) ... [2021-11-06 16:34:22,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25170e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:34:22, skipping insertion in model container [2021-11-06 16:34:22,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:34:02" (2/3) ... [2021-11-06 16:34:22,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25170e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:34:22, skipping insertion in model container [2021-11-06 16:34:22,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:34:22" (3/3) ... [2021-11-06 16:34:22,533 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-11-06 16:34:22,536 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 16:34:22,537 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-06 16:34:22,571 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 16:34:22,575 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 16:34:22,575 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-06 16:34:22,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 1974 states, 1968 states have (on average 1.4659552845528456) internal successors, (2885), 1973 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:22,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-06 16:34:22,607 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:34:22,608 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:34:22,608 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:34:22,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:34:22,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2042928576, now seen corresponding path program 1 times [2021-11-06 16:34:22,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:34:22,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306723282] [2021-11-06 16:34:22,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:22,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:34:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:23,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:34:23,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:34:23,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306723282] [2021-11-06 16:34:23,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306723282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:23,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:34:23,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:34:23,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290928073] [2021-11-06 16:34:23,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 16:34:23,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:23,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 16:34:23,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 16:34:23,141 INFO L87 Difference]: Start difference. First operand has 1974 states, 1968 states have (on average 1.4659552845528456) internal successors, (2885), 1973 states have internal predecessors, (2885), 0 states have call successors, (0), 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 33.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:23,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:34:23,223 INFO L93 Difference]: Finished difference Result 3944 states and 5765 transitions. [2021-11-06 16:34:23,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 16:34:23,225 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-06 16:34:23,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:34:23,244 INFO L225 Difference]: With dead ends: 3944 [2021-11-06 16:34:23,244 INFO L226 Difference]: Without dead ends: 1965 [2021-11-06 16:34:23,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 16:34:23,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2021-11-06 16:34:23,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1965. [2021-11-06 16:34:23,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1960 states have (on average 1.4556122448979592) internal successors, (2853), 1964 states have internal predecessors, (2853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:23,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 2853 transitions. [2021-11-06 16:34:23,340 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 2853 transitions. Word has length 66 [2021-11-06 16:34:23,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:34:23,340 INFO L470 AbstractCegarLoop]: Abstraction has 1965 states and 2853 transitions. [2021-11-06 16:34:23,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:23,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 2853 transitions. [2021-11-06 16:34:23,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-06 16:34:23,344 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:34:23,344 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:34:23,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 16:34:23,345 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:34:23,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:34:23,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1498030002, now seen corresponding path program 1 times [2021-11-06 16:34:23,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:34:23,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456638940] [2021-11-06 16:34:23,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:23,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:34:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:23,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:34:23,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:34:23,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456638940] [2021-11-06 16:34:23,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456638940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:23,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:34:23,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:34:23,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89427386] [2021-11-06 16:34:23,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:34:23,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:23,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:34:23,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:23,595 INFO L87 Difference]: Start difference. First operand 1965 states and 2853 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:25,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:34:25,889 INFO L93 Difference]: Finished difference Result 5761 states and 8411 transitions. [2021-11-06 16:34:25,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:34:25,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-06 16:34:25,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:34:25,904 INFO L225 Difference]: With dead ends: 5761 [2021-11-06 16:34:25,905 INFO L226 Difference]: Without dead ends: 3853 [2021-11-06 16:34:25,910 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:25,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2021-11-06 16:34:25,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3851. [2021-11-06 16:34:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3846 states have (on average 1.4607384295371815) internal successors, (5618), 3850 states have internal predecessors, (5618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:25,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5618 transitions. [2021-11-06 16:34:25,991 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5618 transitions. Word has length 66 [2021-11-06 16:34:25,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:34:25,993 INFO L470 AbstractCegarLoop]: Abstraction has 3851 states and 5618 transitions. [2021-11-06 16:34:25,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:25,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5618 transitions. [2021-11-06 16:34:25,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 16:34:25,996 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:34:25,996 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:34:25,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 16:34:25,996 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:34:25,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:34:25,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1146020226, now seen corresponding path program 1 times [2021-11-06 16:34:25,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:34:25,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438455684] [2021-11-06 16:34:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:25,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:34:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:34:26,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:34:26,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438455684] [2021-11-06 16:34:26,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438455684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:26,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:34:26,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:34:26,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707036334] [2021-11-06 16:34:26,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:34:26,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:26,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:34:26,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:26,226 INFO L87 Difference]: Start difference. First operand 3851 states and 5618 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:26,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:34:26,278 INFO L93 Difference]: Finished difference Result 3851 states and 5618 transitions. [2021-11-06 16:34:26,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:34:26,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2021-11-06 16:34:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:34:26,293 INFO L225 Difference]: With dead ends: 3851 [2021-11-06 16:34:26,293 INFO L226 Difference]: Without dead ends: 3849 [2021-11-06 16:34:26,336 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:26,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3849 states. [2021-11-06 16:34:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3849 to 3849. [2021-11-06 16:34:26,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 3845 states have (on average 1.460598179453836) internal successors, (5616), 3848 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:26,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 5616 transitions. [2021-11-06 16:34:26,417 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 5616 transitions. Word has length 70 [2021-11-06 16:34:26,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:34:26,418 INFO L470 AbstractCegarLoop]: Abstraction has 3849 states and 5616 transitions. [2021-11-06 16:34:26,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:26,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 5616 transitions. [2021-11-06 16:34:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 16:34:26,420 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:34:26,420 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:34:26,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 16:34:26,421 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:34:26,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:34:26,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1166875682, now seen corresponding path program 1 times [2021-11-06 16:34:26,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:34:26,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478568878] [2021-11-06 16:34:26,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:26,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:34:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:34:26,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:34:26,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478568878] [2021-11-06 16:34:26,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478568878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:26,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:34:26,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:34:26,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717256455] [2021-11-06 16:34:26,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:34:26,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:26,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:34:26,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:26,586 INFO L87 Difference]: Start difference. First operand 3849 states and 5616 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:26,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:34:26,637 INFO L93 Difference]: Finished difference Result 3849 states and 5616 transitions. [2021-11-06 16:34:26,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:34:26,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-06 16:34:26,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:34:26,648 INFO L225 Difference]: With dead ends: 3849 [2021-11-06 16:34:26,649 INFO L226 Difference]: Without dead ends: 3847 [2021-11-06 16:34:26,650 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:26,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3847 states. [2021-11-06 16:34:26,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3847 to 3847. [2021-11-06 16:34:26,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3847 states, 3844 states have (on average 1.4604578563995838) internal successors, (5614), 3846 states have internal predecessors, (5614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:26,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3847 states to 3847 states and 5614 transitions. [2021-11-06 16:34:26,726 INFO L78 Accepts]: Start accepts. Automaton has 3847 states and 5614 transitions. Word has length 71 [2021-11-06 16:34:26,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:34:26,727 INFO L470 AbstractCegarLoop]: Abstraction has 3847 states and 5614 transitions. [2021-11-06 16:34:26,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:26,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3847 states and 5614 transitions. [2021-11-06 16:34:26,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 16:34:26,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:34:26,728 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:34:26,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 16:34:26,729 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:34:26,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:34:26,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1813394808, now seen corresponding path program 1 times [2021-11-06 16:34:26,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:34:26,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102613741] [2021-11-06 16:34:26,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:26,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:34:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:34:26,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:34:26,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102613741] [2021-11-06 16:34:26,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102613741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:26,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:34:26,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:34:26,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471150303] [2021-11-06 16:34:26,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:34:26,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:26,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:34:26,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:26,881 INFO L87 Difference]: Start difference. First operand 3847 states and 5614 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:26,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:34:26,930 INFO L93 Difference]: Finished difference Result 3847 states and 5614 transitions. [2021-11-06 16:34:26,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:34:26,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-06 16:34:26,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:34:26,942 INFO L225 Difference]: With dead ends: 3847 [2021-11-06 16:34:26,942 INFO L226 Difference]: Without dead ends: 3845 [2021-11-06 16:34:26,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:26,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3845 states. [2021-11-06 16:34:27,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3845 to 3845. [2021-11-06 16:34:27,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3843 states have (on average 1.4603174603174602) internal successors, (5612), 3844 states have internal predecessors, (5612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:27,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5612 transitions. [2021-11-06 16:34:27,025 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5612 transitions. Word has length 72 [2021-11-06 16:34:27,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:34:27,025 INFO L470 AbstractCegarLoop]: Abstraction has 3845 states and 5612 transitions. [2021-11-06 16:34:27,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:27,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5612 transitions. [2021-11-06 16:34:27,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 16:34:27,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:34:27,027 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:34:27,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 16:34:27,027 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:34:27,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:34:27,028 INFO L85 PathProgramCache]: Analyzing trace with hash -380651224, now seen corresponding path program 1 times [2021-11-06 16:34:27,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:34:27,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192451355] [2021-11-06 16:34:27,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:27,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:34:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:27,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:34:27,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:34:27,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192451355] [2021-11-06 16:34:27,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192451355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:27,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:34:27,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:34:27,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98722863] [2021-11-06 16:34:27,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:34:27,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:27,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:34:27,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:27,209 INFO L87 Difference]: Start difference. First operand 3845 states and 5612 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:27,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:34:27,324 INFO L93 Difference]: Finished difference Result 7615 states and 11138 transitions. [2021-11-06 16:34:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:34:27,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-06 16:34:27,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:34:27,359 INFO L225 Difference]: With dead ends: 7615 [2021-11-06 16:34:27,360 INFO L226 Difference]: Without dead ends: 7606 [2021-11-06 16:34:27,364 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:27,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2021-11-06 16:34:27,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 7606. [2021-11-06 16:34:27,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7606 states, 7604 states have (on average 1.4631772751183587) internal successors, (11126), 7605 states have internal predecessors, (11126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:27,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7606 states to 7606 states and 11126 transitions. [2021-11-06 16:34:27,526 INFO L78 Accepts]: Start accepts. Automaton has 7606 states and 11126 transitions. Word has length 73 [2021-11-06 16:34:27,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:34:27,527 INFO L470 AbstractCegarLoop]: Abstraction has 7606 states and 11126 transitions. [2021-11-06 16:34:27,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:27,528 INFO L276 IsEmpty]: Start isEmpty. Operand 7606 states and 11126 transitions. [2021-11-06 16:34:27,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-06 16:34:27,538 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:34:27,538 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:34:27,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 16:34:27,539 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:34:27,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:34:27,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1086031317, now seen corresponding path program 1 times [2021-11-06 16:34:27,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:34:27,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480941368] [2021-11-06 16:34:27,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:27,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:34:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:34:27,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:34:27,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480941368] [2021-11-06 16:34:27,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480941368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:27,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:34:27,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:34:27,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239985348] [2021-11-06 16:34:27,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:34:27,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:27,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:34:27,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:27,684 INFO L87 Difference]: Start difference. First operand 7606 states and 11126 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:28,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:34:28,216 INFO L93 Difference]: Finished difference Result 15302 states and 22402 transitions. [2021-11-06 16:34:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:34:28,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2021-11-06 16:34:28,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:34:28,229 INFO L225 Difference]: With dead ends: 15302 [2021-11-06 16:34:28,230 INFO L226 Difference]: Without dead ends: 7753 [2021-11-06 16:34:28,237 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:28,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7753 states. [2021-11-06 16:34:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7753 to 7746. [2021-11-06 16:34:28,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7746 states, 7744 states have (on average 1.4630681818181819) internal successors, (11330), 7745 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:28,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7746 states to 7746 states and 11330 transitions. [2021-11-06 16:34:28,396 INFO L78 Accepts]: Start accepts. Automaton has 7746 states and 11330 transitions. Word has length 138 [2021-11-06 16:34:28,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:34:28,397 INFO L470 AbstractCegarLoop]: Abstraction has 7746 states and 11330 transitions. [2021-11-06 16:34:28,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:28,397 INFO L276 IsEmpty]: Start isEmpty. Operand 7746 states and 11330 transitions. [2021-11-06 16:34:28,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-06 16:34:28,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:34:28,404 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:34:28,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 16:34:28,404 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:34:28,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:34:28,405 INFO L85 PathProgramCache]: Analyzing trace with hash -66254471, now seen corresponding path program 1 times [2021-11-06 16:34:28,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:34:28,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848048011] [2021-11-06 16:34:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:28,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:34:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:34:28,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:34:28,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848048011] [2021-11-06 16:34:28,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848048011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:28,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:34:28,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:34:28,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887676474] [2021-11-06 16:34:28,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:34:28,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:28,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:34:28,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:28,603 INFO L87 Difference]: Start difference. First operand 7746 states and 11330 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:28,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:34:28,807 INFO L93 Difference]: Finished difference Result 15439 states and 22604 transitions. [2021-11-06 16:34:28,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:34:28,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-06 16:34:28,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:34:28,821 INFO L225 Difference]: With dead ends: 15439 [2021-11-06 16:34:28,821 INFO L226 Difference]: Without dead ends: 7750 [2021-11-06 16:34:28,831 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:28,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2021-11-06 16:34:29,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 7750. [2021-11-06 16:34:29,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7750 states, 7748 states have (on average 1.4628291171915333) internal successors, (11334), 7749 states have internal predecessors, (11334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7750 states to 7750 states and 11334 transitions. [2021-11-06 16:34:29,055 INFO L78 Accepts]: Start accepts. Automaton has 7750 states and 11334 transitions. Word has length 149 [2021-11-06 16:34:29,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:34:29,056 INFO L470 AbstractCegarLoop]: Abstraction has 7750 states and 11334 transitions. [2021-11-06 16:34:29,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:29,056 INFO L276 IsEmpty]: Start isEmpty. Operand 7750 states and 11334 transitions. [2021-11-06 16:34:29,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-06 16:34:29,063 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:34:29,064 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:34:29,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 16:34:29,064 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:34:29,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:34:29,065 INFO L85 PathProgramCache]: Analyzing trace with hash 135569463, now seen corresponding path program 1 times [2021-11-06 16:34:29,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:34:29,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799906028] [2021-11-06 16:34:29,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:29,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:34:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:34:29,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:34:29,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799906028] [2021-11-06 16:34:29,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799906028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:29,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:34:29,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 16:34:29,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923352828] [2021-11-06 16:34:29,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:34:29,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:29,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:34:29,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 16:34:29,266 INFO L87 Difference]: Start difference. First operand 7750 states and 11334 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:29,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:34:29,904 INFO L93 Difference]: Finished difference Result 30121 states and 43942 transitions. [2021-11-06 16:34:29,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 16:34:29,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-06 16:34:29,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:34:29,946 INFO L225 Difference]: With dead ends: 30121 [2021-11-06 16:34:29,947 INFO L226 Difference]: Without dead ends: 22428 [2021-11-06 16:34:29,961 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:34:29,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22428 states. [2021-11-06 16:34:30,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22428 to 7758. [2021-11-06 16:34:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7758 states, 7756 states have (on average 1.462351727694688) internal successors, (11342), 7757 states have internal predecessors, (11342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7758 states to 7758 states and 11342 transitions. [2021-11-06 16:34:30,266 INFO L78 Accepts]: Start accepts. Automaton has 7758 states and 11342 transitions. Word has length 149 [2021-11-06 16:34:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:34:30,267 INFO L470 AbstractCegarLoop]: Abstraction has 7758 states and 11342 transitions. [2021-11-06 16:34:30,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 7758 states and 11342 transitions. [2021-11-06 16:34:30,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-06 16:34:30,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:34:30,275 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:34:30,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 16:34:30,275 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:34:30,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:34:30,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1329186096, now seen corresponding path program 1 times [2021-11-06 16:34:30,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:34:30,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100828377] [2021-11-06 16:34:30,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:30,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:34:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:34:30,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:34:30,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100828377] [2021-11-06 16:34:30,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100828377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:30,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:34:30,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 16:34:30,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138678567] [2021-11-06 16:34:30,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:34:30,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:30,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:34:30,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 16:34:30,487 INFO L87 Difference]: Start difference. First operand 7758 states and 11342 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:31,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:34:31,150 INFO L93 Difference]: Finished difference Result 33734 states and 49163 transitions. [2021-11-06 16:34:31,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 16:34:31,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 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 168 [2021-11-06 16:34:31,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:34:31,203 INFO L225 Difference]: With dead ends: 33734 [2021-11-06 16:34:31,204 INFO L226 Difference]: Without dead ends: 26033 [2021-11-06 16:34:31,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:34:31,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26033 states. [2021-11-06 16:34:31,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26033 to 7766. [2021-11-06 16:34:31,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7766 states, 7764 states have (on average 1.4618753219989695) internal successors, (11350), 7765 states have internal predecessors, (11350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:31,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7766 states to 7766 states and 11350 transitions. [2021-11-06 16:34:31,615 INFO L78 Accepts]: Start accepts. Automaton has 7766 states and 11350 transitions. Word has length 168 [2021-11-06 16:34:31,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:34:31,616 INFO L470 AbstractCegarLoop]: Abstraction has 7766 states and 11350 transitions. [2021-11-06 16:34:31,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:31,616 INFO L276 IsEmpty]: Start isEmpty. Operand 7766 states and 11350 transitions. [2021-11-06 16:34:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-06 16:34:31,624 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:34:31,624 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:34:31,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 16:34:31,624 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:34:31,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:34:31,625 INFO L85 PathProgramCache]: Analyzing trace with hash -506384738, now seen corresponding path program 1 times [2021-11-06 16:34:31,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:34:31,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050161064] [2021-11-06 16:34:31,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:31,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:34:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:31,866 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:34:31,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:34:31,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050161064] [2021-11-06 16:34:31,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050161064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:31,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:34:31,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:34:31,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680899260] [2021-11-06 16:34:31,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:34:31,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:31,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:34:31,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:31,869 INFO L87 Difference]: Start difference. First operand 7766 states and 11350 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:32,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:34:32,288 INFO L93 Difference]: Finished difference Result 23176 states and 33906 transitions. [2021-11-06 16:34:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:34:32,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 169 [2021-11-06 16:34:32,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:34:32,314 INFO L225 Difference]: With dead ends: 23176 [2021-11-06 16:34:32,315 INFO L226 Difference]: Without dead ends: 15467 [2021-11-06 16:34:32,326 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:32,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15467 states. [2021-11-06 16:34:32,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15467 to 7906. [2021-11-06 16:34:32,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7906 states, 7904 states have (on average 1.4597672064777327) internal successors, (11538), 7905 states have internal predecessors, (11538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:32,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7906 states to 7906 states and 11538 transitions. [2021-11-06 16:34:32,593 INFO L78 Accepts]: Start accepts. Automaton has 7906 states and 11538 transitions. Word has length 169 [2021-11-06 16:34:32,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:34:32,594 INFO L470 AbstractCegarLoop]: Abstraction has 7906 states and 11538 transitions. [2021-11-06 16:34:32,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:32,594 INFO L276 IsEmpty]: Start isEmpty. Operand 7906 states and 11538 transitions. [2021-11-06 16:34:32,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-06 16:34:32,602 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:34:32,602 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:34:32,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 16:34:32,602 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:34:32,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:34:32,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2039693538, now seen corresponding path program 1 times [2021-11-06 16:34:32,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:34:32,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247606538] [2021-11-06 16:34:32,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:32,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:34:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:32,840 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:34:32,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:34:32,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247606538] [2021-11-06 16:34:32,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247606538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:32,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:34:32,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 16:34:32,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345224244] [2021-11-06 16:34:32,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:34:32,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:32,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:34:32,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 16:34:32,843 INFO L87 Difference]: Start difference. First operand 7906 states and 11538 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:33,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:34:33,669 INFO L93 Difference]: Finished difference Result 33722 states and 49195 transitions. [2021-11-06 16:34:33,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 16:34:33,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 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 170 [2021-11-06 16:34:33,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:34:33,798 INFO L225 Difference]: With dead ends: 33722 [2021-11-06 16:34:33,799 INFO L226 Difference]: Without dead ends: 25873 [2021-11-06 16:34:33,812 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:34:33,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25873 states. [2021-11-06 16:34:34,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25873 to 7914. [2021-11-06 16:34:34,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7914 states, 7912 states have (on average 1.4593023255813953) internal successors, (11546), 7913 states have internal predecessors, (11546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:34,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7914 states to 7914 states and 11546 transitions. [2021-11-06 16:34:34,141 INFO L78 Accepts]: Start accepts. Automaton has 7914 states and 11546 transitions. Word has length 170 [2021-11-06 16:34:34,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:34:34,141 INFO L470 AbstractCegarLoop]: Abstraction has 7914 states and 11546 transitions. [2021-11-06 16:34:34,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:34,141 INFO L276 IsEmpty]: Start isEmpty. Operand 7914 states and 11546 transitions. [2021-11-06 16:34:34,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-06 16:34:34,149 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:34:34,149 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:34:34,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 16:34:34,150 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:34:34,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:34:34,150 INFO L85 PathProgramCache]: Analyzing trace with hash 820029928, now seen corresponding path program 1 times [2021-11-06 16:34:34,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:34:34,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504095224] [2021-11-06 16:34:34,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:34,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:34:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:34:34,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:34:34,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504095224] [2021-11-06 16:34:34,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504095224] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:34:34,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956469903] [2021-11-06 16:34:34,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:34,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:34:34,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:34:34,404 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:34:34,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 16:34:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:35,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 3527 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 16:34:35,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:34:35,834 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:34:35,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956469903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:35,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:34:35,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-06 16:34:35,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838019167] [2021-11-06 16:34:35,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:34:35,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:35,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:34:35,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 16:34:35,836 INFO L87 Difference]: Start difference. First operand 7914 states and 11546 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:36,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:34:36,362 INFO L93 Difference]: Finished difference Result 23632 states and 34518 transitions. [2021-11-06 16:34:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 16:34:36,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 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 171 [2021-11-06 16:34:36,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:34:36,404 INFO L225 Difference]: With dead ends: 23632 [2021-11-06 16:34:36,405 INFO L226 Difference]: Without dead ends: 15775 [2021-11-06 16:34:36,423 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-06 16:34:36,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15775 states. [2021-11-06 16:34:36,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15775 to 8202. [2021-11-06 16:34:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8202 states, 8200 states have (on average 1.4553658536585365) internal successors, (11934), 8201 states have internal predecessors, (11934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:36,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8202 states to 8202 states and 11934 transitions. [2021-11-06 16:34:36,882 INFO L78 Accepts]: Start accepts. Automaton has 8202 states and 11934 transitions. Word has length 171 [2021-11-06 16:34:36,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:34:36,882 INFO L470 AbstractCegarLoop]: Abstraction has 8202 states and 11934 transitions. [2021-11-06 16:34:36,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:36,883 INFO L276 IsEmpty]: Start isEmpty. Operand 8202 states and 11934 transitions. [2021-11-06 16:34:36,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-06 16:34:36,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:34:36,892 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:34:36,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 16:34:37,107 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,SelfDestructingSolverStorable12 [2021-11-06 16:34:37,108 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:34:37,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:34:37,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1229357914, now seen corresponding path program 1 times [2021-11-06 16:34:37,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:34:37,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143131930] [2021-11-06 16:34:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:37,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:34:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:34:37,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:34:37,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143131930] [2021-11-06 16:34:37,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143131930] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:34:37,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510480223] [2021-11-06 16:34:37,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:37,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:34:37,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:34:37,423 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:34:37,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 16:34:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:38,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 3524 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 16:34:38,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:34:39,085 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:34:39,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510480223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:39,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:34:39,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-06 16:34:39,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618826084] [2021-11-06 16:34:39,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:34:39,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:39,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:34:39,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:34:39,087 INFO L87 Difference]: Start difference. First operand 8202 states and 11934 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:42,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:34:42,169 INFO L93 Difference]: Finished difference Result 24497 states and 35678 transitions. [2021-11-06 16:34:42,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 16:34:42,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 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 171 [2021-11-06 16:34:42,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:34:42,211 INFO L225 Difference]: With dead ends: 24497 [2021-11-06 16:34:42,211 INFO L226 Difference]: Without dead ends: 24490 [2021-11-06 16:34:42,222 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:34:42,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24490 states. [2021-11-06 16:34:42,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24490 to 24250. [2021-11-06 16:34:43,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24250 states, 24248 states have (on average 1.4593368525239194) internal successors, (35386), 24249 states have internal predecessors, (35386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:43,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24250 states to 24250 states and 35386 transitions. [2021-11-06 16:34:43,046 INFO L78 Accepts]: Start accepts. Automaton has 24250 states and 35386 transitions. Word has length 171 [2021-11-06 16:34:43,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:34:43,047 INFO L470 AbstractCegarLoop]: Abstraction has 24250 states and 35386 transitions. [2021-11-06 16:34:43,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:43,047 INFO L276 IsEmpty]: Start isEmpty. Operand 24250 states and 35386 transitions. [2021-11-06 16:34:43,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-06 16:34:43,079 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:34:43,079 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:34:43,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 16:34:43,286 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,SelfDestructingSolverStorable13 [2021-11-06 16:34:43,287 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:34:43,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:34:43,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1816163928, now seen corresponding path program 1 times [2021-11-06 16:34:43,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:34:43,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952452908] [2021-11-06 16:34:43,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:43,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:34:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:34:43,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:34:43,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952452908] [2021-11-06 16:34:43,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952452908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:43,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:34:43,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 16:34:43,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628624119] [2021-11-06 16:34:43,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:34:43,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:43,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:34:43,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 16:34:43,523 INFO L87 Difference]: Start difference. First operand 24250 states and 35386 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:45,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:34:45,170 INFO L93 Difference]: Finished difference Result 69103 states and 100865 transitions. [2021-11-06 16:34:45,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 16:34:45,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 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 171 [2021-11-06 16:34:45,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:34:45,275 INFO L225 Difference]: With dead ends: 69103 [2021-11-06 16:34:45,275 INFO L226 Difference]: Without dead ends: 56975 [2021-11-06 16:34:45,307 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:34:45,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56975 states. [2021-11-06 16:34:46,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56975 to 24254. [2021-11-06 16:34:46,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24254 states, 24252 states have (on average 1.459261091868712) internal successors, (35390), 24253 states have internal predecessors, (35390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24254 states to 24254 states and 35390 transitions. [2021-11-06 16:34:46,487 INFO L78 Accepts]: Start accepts. Automaton has 24254 states and 35390 transitions. Word has length 171 [2021-11-06 16:34:46,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:34:46,487 INFO L470 AbstractCegarLoop]: Abstraction has 24254 states and 35390 transitions. [2021-11-06 16:34:46,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:46,487 INFO L276 IsEmpty]: Start isEmpty. Operand 24254 states and 35390 transitions. [2021-11-06 16:34:46,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-06 16:34:46,505 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:34:46,505 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:34:46,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 16:34:46,505 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:34:46,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:34:46,506 INFO L85 PathProgramCache]: Analyzing trace with hash 268260612, now seen corresponding path program 1 times [2021-11-06 16:34:46,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:34:46,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086693256] [2021-11-06 16:34:46,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:46,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:34:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:34:46,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:34:46,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086693256] [2021-11-06 16:34:46,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086693256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:46,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:34:46,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:34:46,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320183115] [2021-11-06 16:34:46,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:34:46,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:46,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:34:46,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:46,920 INFO L87 Difference]: Start difference. First operand 24254 states and 35390 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:48,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:34:48,383 INFO L93 Difference]: Finished difference Result 72648 states and 106042 transitions. [2021-11-06 16:34:48,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:34:48,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 172 [2021-11-06 16:34:48,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:34:48,459 INFO L225 Difference]: With dead ends: 72648 [2021-11-06 16:34:48,459 INFO L226 Difference]: Without dead ends: 48451 [2021-11-06 16:34:48,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:34:48,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48451 states. [2021-11-06 16:34:49,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48451 to 24266. [2021-11-06 16:34:49,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24266 states, 24264 states have (on average 1.4590339597757995) internal successors, (35402), 24265 states have internal predecessors, (35402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24266 states to 24266 states and 35402 transitions. [2021-11-06 16:34:49,550 INFO L78 Accepts]: Start accepts. Automaton has 24266 states and 35402 transitions. Word has length 172 [2021-11-06 16:34:49,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:34:49,551 INFO L470 AbstractCegarLoop]: Abstraction has 24266 states and 35402 transitions. [2021-11-06 16:34:49,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:49,551 INFO L276 IsEmpty]: Start isEmpty. Operand 24266 states and 35402 transitions. [2021-11-06 16:34:49,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-06 16:34:49,566 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:34:49,566 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:34:49,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 16:34:49,567 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:34:49,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:34:49,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1290477699, now seen corresponding path program 1 times [2021-11-06 16:34:49,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:34:49,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147726221] [2021-11-06 16:34:49,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:34:49,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:34:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:34:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:34:50,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:34:50,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147726221] [2021-11-06 16:34:50,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147726221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:50,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:34:50,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 16:34:50,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701593387] [2021-11-06 16:34:50,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 16:34:50,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:50,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 16:34:50,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-06 16:34:50,327 INFO L87 Difference]: Start difference. First operand 24266 states and 35402 transitions. Second operand has 16 states, 16 states have (on average 10.875) internal successors, (174), 16 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:35:43,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:35:43,181 INFO L93 Difference]: Finished difference Result 115419 states and 168539 transitions. [2021-11-06 16:35:43,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-06 16:35:43,182 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.875) internal successors, (174), 16 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-11-06 16:35:43,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:35:43,376 INFO L225 Difference]: With dead ends: 115419 [2021-11-06 16:35:43,376 INFO L226 Difference]: Without dead ends: 103263 [2021-11-06 16:35:43,574 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=635, Invalid=1527, Unknown=0, NotChecked=0, Total=2162 [2021-11-06 16:35:43,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103263 states. [2021-11-06 16:35:45,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103263 to 30614. [2021-11-06 16:35:45,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30614 states, 30612 states have (on average 1.4638050437736836) internal successors, (44810), 30613 states have internal predecessors, (44810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:35:45,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30614 states to 30614 states and 44810 transitions. [2021-11-06 16:35:45,519 INFO L78 Accepts]: Start accepts. Automaton has 30614 states and 44810 transitions. Word has length 174 [2021-11-06 16:35:45,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:35:45,519 INFO L470 AbstractCegarLoop]: Abstraction has 30614 states and 44810 transitions. [2021-11-06 16:35:45,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.875) internal successors, (174), 16 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:35:45,520 INFO L276 IsEmpty]: Start isEmpty. Operand 30614 states and 44810 transitions. [2021-11-06 16:35:45,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-06 16:35:45,535 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:35:45,536 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:35:45,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 16:35:45,536 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:35:45,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:35:45,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1081261563, now seen corresponding path program 1 times [2021-11-06 16:35:45,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:35:45,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206706110] [2021-11-06 16:35:45,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:35:45,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:35:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:35:46,304 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:35:46,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:35:46,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206706110] [2021-11-06 16:35:46,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206706110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:35:46,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:35:46,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 16:35:46,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180883216] [2021-11-06 16:35:46,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 16:35:46,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:35:46,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 16:35:46,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 16:35:46,306 INFO L87 Difference]: Start difference. First operand 30614 states and 44810 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:35:51,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:35:51,785 INFO L93 Difference]: Finished difference Result 119986 states and 175364 transitions. [2021-11-06 16:35:51,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 16:35:51,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 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 174 [2021-11-06 16:35:51,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:35:51,936 INFO L225 Difference]: With dead ends: 119986 [2021-11-06 16:35:51,936 INFO L226 Difference]: Without dead ends: 89429 [2021-11-06 16:35:51,980 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-06 16:35:52,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89429 states. [2021-11-06 16:35:54,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89429 to 30662. [2021-11-06 16:35:54,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30662 states, 30660 states have (on average 1.4630789302022178) internal successors, (44858), 30661 states have internal predecessors, (44858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:35:54,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30662 states to 30662 states and 44858 transitions. [2021-11-06 16:35:54,506 INFO L78 Accepts]: Start accepts. Automaton has 30662 states and 44858 transitions. Word has length 174 [2021-11-06 16:35:54,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:35:54,507 INFO L470 AbstractCegarLoop]: Abstraction has 30662 states and 44858 transitions. [2021-11-06 16:35:54,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:35:54,507 INFO L276 IsEmpty]: Start isEmpty. Operand 30662 states and 44858 transitions. [2021-11-06 16:35:54,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-06 16:35:54,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:35:54,524 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:35:54,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 16:35:54,527 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:35:54,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:35:54,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1489016868, now seen corresponding path program 1 times [2021-11-06 16:35:54,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:35:54,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224509619] [2021-11-06 16:35:54,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:35:54,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:35:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:35:55,195 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:35:55,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:35:55,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224509619] [2021-11-06 16:35:55,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224509619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:35:55,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:35:55,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 16:35:55,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080848587] [2021-11-06 16:35:55,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 16:35:55,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:35:55,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 16:35:55,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 16:35:55,197 INFO L87 Difference]: Start difference. First operand 30662 states and 44858 transitions. Second operand has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:36:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:36:01,854 INFO L93 Difference]: Finished difference Result 113734 states and 166052 transitions. [2021-11-06 16:36:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 16:36:01,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 0 states have call successors, (0), 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 180 [2021-11-06 16:36:01,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:36:01,981 INFO L225 Difference]: With dead ends: 113734 [2021-11-06 16:36:01,982 INFO L226 Difference]: Without dead ends: 83129 [2021-11-06 16:36:02,014 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-06 16:36:02,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83129 states. [2021-11-06 16:36:04,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83129 to 24314. [2021-11-06 16:36:04,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24314 states, 24312 states have (on average 1.4581276735768345) internal successors, (35450), 24313 states have internal predecessors, (35450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:36:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24314 states to 24314 states and 35450 transitions. [2021-11-06 16:36:04,208 INFO L78 Accepts]: Start accepts. Automaton has 24314 states and 35450 transitions. Word has length 180 [2021-11-06 16:36:04,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:36:04,208 INFO L470 AbstractCegarLoop]: Abstraction has 24314 states and 35450 transitions. [2021-11-06 16:36:04,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:36:04,209 INFO L276 IsEmpty]: Start isEmpty. Operand 24314 states and 35450 transitions. [2021-11-06 16:36:04,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-06 16:36:04,221 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:36:04,222 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:36:04,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 16:36:04,222 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:36:04,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:36:04,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1562730988, now seen corresponding path program 1 times [2021-11-06 16:36:04,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:36:04,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742137315] [2021-11-06 16:36:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:36:04,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:36:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:36:04,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:36:04,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:36:04,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742137315] [2021-11-06 16:36:04,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742137315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:36:04,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:36:04,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 16:36:04,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200413363] [2021-11-06 16:36:04,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 16:36:04,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:36:04,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 16:36:04,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 16:36:04,636 INFO L87 Difference]: Start difference. First operand 24314 states and 35450 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:36:11,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:36:11,935 INFO L93 Difference]: Finished difference Result 105742 states and 154232 transitions. [2021-11-06 16:36:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 16:36:11,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 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 180 [2021-11-06 16:36:11,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:36:12,074 INFO L225 Difference]: With dead ends: 105742 [2021-11-06 16:36:12,074 INFO L226 Difference]: Without dead ends: 81485 [2021-11-06 16:36:12,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-06 16:36:12,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81485 states. [2021-11-06 16:36:14,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81485 to 24374. [2021-11-06 16:36:14,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24374 states, 24372 states have (on average 1.4569998358772362) internal successors, (35510), 24373 states have internal predecessors, (35510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:36:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24374 states to 24374 states and 35510 transitions. [2021-11-06 16:36:14,373 INFO L78 Accepts]: Start accepts. Automaton has 24374 states and 35510 transitions. Word has length 180 [2021-11-06 16:36:14,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:36:14,373 INFO L470 AbstractCegarLoop]: Abstraction has 24374 states and 35510 transitions. [2021-11-06 16:36:14,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:36:14,373 INFO L276 IsEmpty]: Start isEmpty. Operand 24374 states and 35510 transitions. [2021-11-06 16:36:14,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-06 16:36:14,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:36:14,386 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:36:14,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 16:36:14,387 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:36:14,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:36:14,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1597851652, now seen corresponding path program 1 times [2021-11-06 16:36:14,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:36:14,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471097467] [2021-11-06 16:36:14,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:36:14,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:36:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:36:14,938 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:36:14,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:36:14,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471097467] [2021-11-06 16:36:14,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471097467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:36:14,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:36:14,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 16:36:14,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800508520] [2021-11-06 16:36:14,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 16:36:14,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:36:14,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 16:36:14,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-06 16:36:14,940 INFO L87 Difference]: Start difference. First operand 24374 states and 35510 transitions. Second operand has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:37:04,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:37:04,804 INFO L93 Difference]: Finished difference Result 36912 states and 53757 transitions. [2021-11-06 16:37:04,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 16:37:04,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2021-11-06 16:37:04,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:37:04,843 INFO L225 Difference]: With dead ends: 36912 [2021-11-06 16:37:04,843 INFO L226 Difference]: Without dead ends: 24702 [2021-11-06 16:37:04,860 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-06 16:37:04,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24702 states. [2021-11-06 16:37:06,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24702 to 24566. [2021-11-06 16:37:06,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24566 states, 24564 states have (on average 1.457335938772187) internal successors, (35798), 24565 states have internal predecessors, (35798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:37:06,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24566 states to 24566 states and 35798 transitions. [2021-11-06 16:37:06,918 INFO L78 Accepts]: Start accepts. Automaton has 24566 states and 35798 transitions. Word has length 186 [2021-11-06 16:37:06,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:37:06,919 INFO L470 AbstractCegarLoop]: Abstraction has 24566 states and 35798 transitions. [2021-11-06 16:37:06,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:37:06,920 INFO L276 IsEmpty]: Start isEmpty. Operand 24566 states and 35798 transitions. [2021-11-06 16:37:06,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-06 16:37:06,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:37:06,933 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:37:06,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 16:37:06,933 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:37:06,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:37:06,933 INFO L85 PathProgramCache]: Analyzing trace with hash 325376382, now seen corresponding path program 1 times [2021-11-06 16:37:06,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:37:06,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411389655] [2021-11-06 16:37:06,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:37:06,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:37:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:37:08,375 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:37:08,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:37:08,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411389655] [2021-11-06 16:37:08,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411389655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:37:08,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:37:08,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 16:37:08,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344698459] [2021-11-06 16:37:08,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:37:08,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:37:08,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:37:08,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 16:37:08,377 INFO L87 Difference]: Start difference. First operand 24566 states and 35798 transitions. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:37:12,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:37:12,061 INFO L93 Difference]: Finished difference Result 66456 states and 96881 transitions. [2021-11-06 16:37:12,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 16:37:12,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2021-11-06 16:37:12,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:37:12,119 INFO L225 Difference]: With dead ends: 66456 [2021-11-06 16:37:12,120 INFO L226 Difference]: Without dead ends: 41947 [2021-11-06 16:37:12,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 16:37:12,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41947 states. [2021-11-06 16:37:14,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41947 to 24578. [2021-11-06 16:37:14,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24578 states, 24576 states have (on average 1.4571126302083333) internal successors, (35810), 24577 states have internal predecessors, (35810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:37:14,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24578 states to 24578 states and 35810 transitions. [2021-11-06 16:37:14,477 INFO L78 Accepts]: Start accepts. Automaton has 24578 states and 35810 transitions. Word has length 186 [2021-11-06 16:37:14,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:37:14,477 INFO L470 AbstractCegarLoop]: Abstraction has 24578 states and 35810 transitions. [2021-11-06 16:37:14,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:37:14,477 INFO L276 IsEmpty]: Start isEmpty. Operand 24578 states and 35810 transitions. [2021-11-06 16:37:14,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-06 16:37:14,489 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:37:14,489 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:37:14,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 16:37:14,490 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:37:14,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:37:14,490 INFO L85 PathProgramCache]: Analyzing trace with hash 95619828, now seen corresponding path program 1 times [2021-11-06 16:37:14,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:37:14,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128874012] [2021-11-06 16:37:14,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:37:14,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:37:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:37:15,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 16:37:15,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:37:15,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128874012] [2021-11-06 16:37:15,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128874012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:37:15,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:37:15,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:37:15,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391484662] [2021-11-06 16:37:15,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:37:15,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:37:15,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:37:15,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:37:15,635 INFO L87 Difference]: Start difference. First operand 24578 states and 35810 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:37:17,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:37:17,965 INFO L93 Difference]: Finished difference Result 49126 states and 71595 transitions. [2021-11-06 16:37:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:37:17,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 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 189 [2021-11-06 16:37:17,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:37:18,008 INFO L225 Difference]: With dead ends: 49126 [2021-11-06 16:37:18,008 INFO L226 Difference]: Without dead ends: 24584 [2021-11-06 16:37:18,024 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:37:18,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24584 states. [2021-11-06 16:37:20,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24584 to 24584. [2021-11-06 16:37:20,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24584 states, 24582 states have (on average 1.4570010576844845) internal successors, (35816), 24583 states have internal predecessors, (35816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:37:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24584 states to 24584 states and 35816 transitions. [2021-11-06 16:37:20,145 INFO L78 Accepts]: Start accepts. Automaton has 24584 states and 35816 transitions. Word has length 189 [2021-11-06 16:37:20,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:37:20,145 INFO L470 AbstractCegarLoop]: Abstraction has 24584 states and 35816 transitions. [2021-11-06 16:37:20,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:37:20,146 INFO L276 IsEmpty]: Start isEmpty. Operand 24584 states and 35816 transitions. [2021-11-06 16:37:20,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-06 16:37:20,158 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:37:20,158 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:37:20,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-06 16:37:20,158 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 16:37:20,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:37:20,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1000950408, now seen corresponding path program 1 times [2021-11-06 16:37:20,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:37:20,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446661258] [2021-11-06 16:37:20,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:37:20,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:37:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:37:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-06 16:37:21,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:37:21,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446661258] [2021-11-06 16:37:21,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446661258] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:37:21,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74572486] [2021-11-06 16:37:21,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:37:21,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:37:21,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:37:21,875 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:37:21,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 16:37:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:37:23,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 3674 conjuncts, 133 conjunts are in the unsatisfiable core [2021-11-06 16:37:23,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:37:23,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-06 16:37:24,092 INFO L354 Elim1Store]: treesize reduction 164, result has 11.4 percent of original size [2021-11-06 16:37:24,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 38 [2021-11-06 16:37:24,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 16:37:24,860 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-06 16:37:24,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 14 [2021-11-06 16:38:10,340 WARN L207 SmtUtils]: Spent 44.57 s on a formula simplification. DAG size of input: 30 DAG size of output: 13 [2021-11-06 16:38:10,341 INFO L354 Elim1Store]: treesize reduction 82, result has 17.2 percent of original size [2021-11-06 16:38:10,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 5581 treesize of output 5570