./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.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 1b2bc647ca8745ce6966563490eaffac57a1a11e1ae3ccf6c64fee22f81541d7 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 14:03:14,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 14:03:14,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 14:03:14,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 14:03:14,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 14:03:14,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 14:03:14,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 14:03:14,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 14:03:14,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 14:03:14,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 14:03:14,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 14:03:14,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 14:03:14,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 14:03:14,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 14:03:14,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 14:03:14,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 14:03:14,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 14:03:14,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 14:03:14,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 14:03:14,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 14:03:14,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 14:03:14,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 14:03:14,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 14:03:14,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 14:03:14,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 14:03:14,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 14:03:14,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 14:03:14,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 14:03:14,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 14:03:14,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 14:03:14,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 14:03:14,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 14:03:14,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 14:03:14,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 14:03:14,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 14:03:14,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 14:03:14,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 14:03:14,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 14:03:14,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 14:03:14,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 14:03:14,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 14:03:14,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 14:03:14,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 14:03:14,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 14:03:14,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 14:03:14,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 14:03:14,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 14:03:14,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 14:03:14,457 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 14:03:14,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 14:03:14,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 14:03:14,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 14:03:14,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 14:03:14,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 14:03:14,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 14:03:14,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 14:03:14,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 14:03:14,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 14:03:14,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 14:03:14,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 14:03:14,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 14:03:14,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 14:03:14,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 14:03:14,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 14:03:14,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 14:03:14,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 14:03:14,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 14:03:14,461 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 14:03:14,461 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 14:03:14,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 14:03:14,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 14:03:14,462 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b2bc647ca8745ce6966563490eaffac57a1a11e1ae3ccf6c64fee22f81541d7 [2021-11-05 14:03:14,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 14:03:14,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 14:03:14,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 14:03:14,741 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 14:03:14,742 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 14:03:14,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2021-11-05 14:03:14,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53b01138a/d5621873e5b747b7bbec92f043ce8b36/FLAG35bd4e25d [2021-11-05 14:03:15,390 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 14:03:15,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2021-11-05 14:03:15,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53b01138a/d5621873e5b747b7bbec92f043ce8b36/FLAG35bd4e25d [2021-11-05 14:03:15,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53b01138a/d5621873e5b747b7bbec92f043ce8b36 [2021-11-05 14:03:15,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 14:03:15,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 14:03:15,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 14:03:15,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 14:03:15,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 14:03:15,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:03:15" (1/1) ... [2021-11-05 14:03:15,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@118e23c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:15, skipping insertion in model container [2021-11-05 14:03:15,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:03:15" (1/1) ... [2021-11-05 14:03:15,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 14:03:15,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 14:03:16,963 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2021-11-05 14:03:16,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 14:03:17,037 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 14:03:17,269 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2021-11-05 14:03:17,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 14:03:17,341 INFO L208 MainTranslator]: Completed translation [2021-11-05 14:03:17,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17 WrapperNode [2021-11-05 14:03:17,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 14:03:17,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 14:03:17,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 14:03:17,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 14:03:17,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:17,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:17,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 14:03:17,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 14:03:17,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 14:03:17,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 14:03:17,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:17,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:17,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:17,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:17,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:17,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:18,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:18,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 14:03:18,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 14:03:18,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 14:03:18,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 14:03:18,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:18,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 14:03:18,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 14:03:18,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 14:03:18,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 14:03:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 14:03:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 14:03:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 14:03:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 14:03:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 14:03:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 14:03:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 14:03:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 14:03:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 14:03:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 14:03:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 14:03:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 14:03:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 14:03:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 14:03:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 14:03:18,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 14:03:18,777 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:03:18,796 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:03:18,800 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:03:18,804 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:03:18,807 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:03:18,810 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:03:18,816 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:03:18,821 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:03:18,826 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:03:18,850 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:03:18,851 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:03:18,854 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:03:18,874 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:03:18,877 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:03:18,879 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:03:18,881 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:03:29,328 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2506: assume !false; [2021-11-05 14:03:29,329 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2505: assume false; [2021-11-05 14:03:29,329 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1145: assume false; [2021-11-05 14:03:29,329 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1146: assume !false; [2021-11-05 14:03:29,329 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2391: assume false; [2021-11-05 14:03:29,329 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2392: assume !false; [2021-11-05 14:03:29,329 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1031: assume false; [2021-11-05 14:03:29,329 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1032: assume !false; [2021-11-05 14:03:29,329 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2247: assume !false; [2021-11-05 14:03:29,329 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2246: assume false; [2021-11-05 14:03:29,329 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##60: assume !false; [2021-11-05 14:03:29,329 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##59: assume false; [2021-11-05 14:03:29,330 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##228: assume !false; [2021-11-05 14:03:29,330 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##227: assume false; [2021-11-05 14:03:29,330 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##352: assume !false; [2021-11-05 14:03:29,330 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##351: assume false; [2021-11-05 14:03:29,330 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1870: assume false; [2021-11-05 14:03:29,330 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1871: assume !false; [2021-11-05 14:03:29,330 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1857: assume false; [2021-11-05 14:03:29,330 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1858: assume !false; [2021-11-05 14:03:29,330 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##467: assume false; [2021-11-05 14:03:29,331 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##468: assume !false; [2021-11-05 14:03:29,331 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##554: assume !false; [2021-11-05 14:03:29,331 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##553: assume false; [2021-11-05 14:03:29,331 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2120: assume !false; [2021-11-05 14:03:29,331 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2119: assume false; [2021-11-05 14:03:29,331 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##689: assume !false; [2021-11-05 14:03:29,331 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##688: assume false; [2021-11-05 14:03:29,331 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2005: assume false; [2021-11-05 14:03:29,332 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2006: assume !false; [2021-11-05 14:03:29,332 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##884: assume !false; [2021-11-05 14:03:29,332 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##883: assume false; [2021-11-05 14:03:29,348 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 14:03:29,348 INFO L299 CfgBuilder]: Removed 1624 assume(true) statements. [2021-11-05 14:03:29,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:03:29 BoogieIcfgContainer [2021-11-05 14:03:29,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 14:03:29,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 14:03:29,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 14:03:29,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 14:03:29,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:03:15" (1/3) ... [2021-11-05 14:03:29,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dcbd39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:03:29, skipping insertion in model container [2021-11-05 14:03:29,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (2/3) ... [2021-11-05 14:03:29,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dcbd39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:03:29, skipping insertion in model container [2021-11-05 14:03:29,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:03:29" (3/3) ... [2021-11-05 14:03:29,356 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2021-11-05 14:03:29,359 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 14:03:29,359 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-05 14:03:29,392 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 14:03:29,396 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 14:03:29,396 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-05 14:03:29,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 1968 states, 1959 states have (on average 1.5630423685553854) internal successors, (3062), 1967 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:29,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-05 14:03:29,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:29,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:03:29,433 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 14:03:29,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:29,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1414136188, now seen corresponding path program 1 times [2021-11-05 14:03:29,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:03:29,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666743356] [2021-11-05 14:03:29,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:29,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:03:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:29,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:29,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:03:29,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666743356] [2021-11-05 14:03:29,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666743356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:29,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:29,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 14:03:29,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005701890] [2021-11-05 14:03:29,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:29,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 14:03:29,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:03:29,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 14:03:29,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:03:29,934 INFO L87 Difference]: Start difference. First operand has 1968 states, 1959 states have (on average 1.5630423685553854) internal successors, (3062), 1967 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:30,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:30,204 INFO L93 Difference]: Finished difference Result 5827 states and 9101 transitions. [2021-11-05 14:03:30,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 14:03:30,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-11-05 14:03:30,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:30,234 INFO L225 Difference]: With dead ends: 5827 [2021-11-05 14:03:30,234 INFO L226 Difference]: Without dead ends: 3858 [2021-11-05 14:03:30,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:03:30,249 INFO L933 BasicCegarLoop]: 2645 mSDtfsCounter, 2530 mSDsluCounter, 2507 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 5152 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.89ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.55ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:30,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2530 Valid, 5152 Invalid, 43 Unknown, 0 Unchecked, 19.89ms Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 46.55ms Time] [2021-11-05 14:03:30,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2021-11-05 14:03:30,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3846. [2021-11-05 14:03:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 3838 states have (on average 1.3129233976029182) internal successors, (5039), 3845 states have internal predecessors, (5039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:30,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 5039 transitions. [2021-11-05 14:03:30,390 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 5039 transitions. Word has length 10 [2021-11-05 14:03:30,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:30,392 INFO L470 AbstractCegarLoop]: Abstraction has 3846 states and 5039 transitions. [2021-11-05 14:03:30,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:30,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 5039 transitions. [2021-11-05 14:03:30,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-05 14:03:30,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:30,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:03:30,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 14:03:30,395 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 14:03:30,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:30,400 INFO L85 PathProgramCache]: Analyzing trace with hash -888542125, now seen corresponding path program 1 times [2021-11-05 14:03:30,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:03:30,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878240093] [2021-11-05 14:03:30,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:30,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:03:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:30,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:03:30,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878240093] [2021-11-05 14:03:30,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878240093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:30,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:30,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 14:03:30,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82716354] [2021-11-05 14:03:30,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:30,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 14:03:30,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:03:30,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 14:03:30,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:03:30,566 INFO L87 Difference]: Start difference. First operand 3846 states and 5039 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:30,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:30,619 INFO L93 Difference]: Finished difference Result 3846 states and 5039 transitions. [2021-11-05 14:03:30,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 14:03:30,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-11-05 14:03:30,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:30,629 INFO L225 Difference]: With dead ends: 3846 [2021-11-05 14:03:30,629 INFO L226 Difference]: Without dead ends: 3839 [2021-11-05 14:03:30,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:03:30,631 INFO L933 BasicCegarLoop]: 2538 mSDtfsCounter, 2529 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2529 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:30,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2529 Valid, 2538 Invalid, 0 Unknown, 0 Unchecked, 4.68ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 14:03:30,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2021-11-05 14:03:30,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 3839. [2021-11-05 14:03:30,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 3832 states have (on average 1.312108559498956) internal successors, (5028), 3838 states have internal predecessors, (5028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 5028 transitions. [2021-11-05 14:03:30,703 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 5028 transitions. Word has length 11 [2021-11-05 14:03:30,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:30,703 INFO L470 AbstractCegarLoop]: Abstraction has 3839 states and 5028 transitions. [2021-11-05 14:03:30,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 5028 transitions. [2021-11-05 14:03:30,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-05 14:03:30,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:30,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:03:30,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 14:03:30,712 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 14:03:30,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:30,712 INFO L85 PathProgramCache]: Analyzing trace with hash -694806309, now seen corresponding path program 1 times [2021-11-05 14:03:30,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:03:30,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526372489] [2021-11-05 14:03:30,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:30,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:03:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:30,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:03:30,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526372489] [2021-11-05 14:03:30,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526372489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:30,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:30,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 14:03:30,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720447864] [2021-11-05 14:03:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:30,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 14:03:30,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:03:30,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 14:03:30,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:03:30,901 INFO L87 Difference]: Start difference. First operand 3839 states and 5028 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:31,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:31,039 INFO L93 Difference]: Finished difference Result 9651 states and 12641 transitions. [2021-11-05 14:03:31,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 14:03:31,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-05 14:03:31,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:31,056 INFO L225 Difference]: With dead ends: 9651 [2021-11-05 14:03:31,056 INFO L226 Difference]: Without dead ends: 5826 [2021-11-05 14:03:31,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.92ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:03:31,076 INFO L933 BasicCegarLoop]: 2531 mSDtfsCounter, 1975 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1975 SdHoareTripleChecker+Valid, 4374 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.67ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.60ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:31,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1975 Valid, 4374 Invalid, 20 Unknown, 0 Unchecked, 6.67ms Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 23.60ms Time] [2021-11-05 14:03:31,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5826 states. [2021-11-05 14:03:31,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5826 to 5814. [2021-11-05 14:03:31,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5814 states, 5807 states have (on average 1.3110039607370414) internal successors, (7613), 5813 states have internal predecessors, (7613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5814 states to 5814 states and 7613 transitions. [2021-11-05 14:03:31,260 INFO L78 Accepts]: Start accepts. Automaton has 5814 states and 7613 transitions. Word has length 55 [2021-11-05 14:03:31,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:31,261 INFO L470 AbstractCegarLoop]: Abstraction has 5814 states and 7613 transitions. [2021-11-05 14:03:31,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:31,261 INFO L276 IsEmpty]: Start isEmpty. Operand 5814 states and 7613 transitions. [2021-11-05 14:03:31,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-05 14:03:31,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:31,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:03:31,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 14:03:31,266 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 14:03:31,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:31,267 INFO L85 PathProgramCache]: Analyzing trace with hash 761018767, now seen corresponding path program 1 times [2021-11-05 14:03:31,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:03:31,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084152459] [2021-11-05 14:03:31,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:31,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:03:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:31,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:03:31,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084152459] [2021-11-05 14:03:31,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084152459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:31,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:31,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 14:03:31,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383810904] [2021-11-05 14:03:31,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:31,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 14:03:31,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:03:31,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 14:03:31,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 14:03:31,458 INFO L87 Difference]: Start difference. First operand 5814 states and 7613 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2021-11-05 14:03:32,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:32,993 INFO L93 Difference]: Finished difference Result 46542 states and 61225 transitions. [2021-11-05 14:03:32,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 14:03:32,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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 [2021-11-05 14:03:32,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:33,104 INFO L225 Difference]: With dead ends: 46542 [2021-11-05 14:03:33,105 INFO L226 Difference]: Without dead ends: 40743 [2021-11-05 14:03:33,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 70.54ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-05 14:03:33,135 INFO L933 BasicCegarLoop]: 4547 mSDtfsCounter, 24505 mSDsluCounter, 30211 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 279.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24505 SdHoareTripleChecker+Valid, 34758 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 69.62ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 333.72ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:33,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24505 Valid, 34758 Invalid, 434 Unknown, 0 Unchecked, 69.62ms Time], IncrementalHoareTripleChecker [64 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 333.72ms Time] [2021-11-05 14:03:33,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40743 states. [2021-11-05 14:03:33,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40743 to 5838. [2021-11-05 14:03:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5838 states, 5831 states have (on average 1.3097238895558223) internal successors, (7637), 5837 states have internal predecessors, (7637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:33,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5838 states to 5838 states and 7637 transitions. [2021-11-05 14:03:33,624 INFO L78 Accepts]: Start accepts. Automaton has 5838 states and 7637 transitions. Word has length 70 [2021-11-05 14:03:33,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:33,625 INFO L470 AbstractCegarLoop]: Abstraction has 5838 states and 7637 transitions. [2021-11-05 14:03:33,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2021-11-05 14:03:33,625 INFO L276 IsEmpty]: Start isEmpty. Operand 5838 states and 7637 transitions. [2021-11-05 14:03:33,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-05 14:03:33,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:33,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:03:33,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 14:03:33,628 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 14:03:33,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:33,628 INFO L85 PathProgramCache]: Analyzing trace with hash 279938509, now seen corresponding path program 1 times [2021-11-05 14:03:33,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:03:33,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55685140] [2021-11-05 14:03:33,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:33,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:03:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:33,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:03:33,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55685140] [2021-11-05 14:03:33,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55685140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:33,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:33,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 14:03:33,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598973954] [2021-11-05 14:03:33,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:33,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 14:03:33,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:03:33,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 14:03:33,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 14:03:33,809 INFO L87 Difference]: Start difference. First operand 5838 states and 7637 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2021-11-05 14:03:35,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:35,752 INFO L93 Difference]: Finished difference Result 46506 states and 61153 transitions. [2021-11-05 14:03:35,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 14:03:35,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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 [2021-11-05 14:03:35,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:35,837 INFO L225 Difference]: With dead ends: 46506 [2021-11-05 14:03:35,837 INFO L226 Difference]: Without dead ends: 40683 [2021-11-05 14:03:35,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 71.62ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-05 14:03:35,862 INFO L933 BasicCegarLoop]: 6624 mSDtfsCounter, 18161 mSDsluCounter, 30452 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 270.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18161 SdHoareTripleChecker+Valid, 37076 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.63ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 323.00ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:35,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18161 Valid, 37076 Invalid, 456 Unknown, 0 Unchecked, 45.63ms Time], IncrementalHoareTripleChecker [64 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 323.00ms Time] [2021-11-05 14:03:35,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40683 states. [2021-11-05 14:03:36,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40683 to 5862. [2021-11-05 14:03:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5862 states, 5855 states have (on average 1.3084543125533732) internal successors, (7661), 5861 states have internal predecessors, (7661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:36,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5862 states to 5862 states and 7661 transitions. [2021-11-05 14:03:36,584 INFO L78 Accepts]: Start accepts. Automaton has 5862 states and 7661 transitions. Word has length 70 [2021-11-05 14:03:36,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:36,586 INFO L470 AbstractCegarLoop]: Abstraction has 5862 states and 7661 transitions. [2021-11-05 14:03:36,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2021-11-05 14:03:36,586 INFO L276 IsEmpty]: Start isEmpty. Operand 5862 states and 7661 transitions. [2021-11-05 14:03:36,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-05 14:03:36,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:36,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:03:36,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 14:03:36,590 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 14:03:36,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:36,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1173424847, now seen corresponding path program 1 times [2021-11-05 14:03:36,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:03:36,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694200575] [2021-11-05 14:03:36,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:36,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:03:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:36,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:03:36,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694200575] [2021-11-05 14:03:36,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694200575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:36,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:36,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 14:03:36,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79682525] [2021-11-05 14:03:36,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:36,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:03:36,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:03:36,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:03:36,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:03:36,786 INFO L87 Difference]: Start difference. First operand 5862 states and 7661 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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) [2021-11-05 14:03:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:37,639 INFO L93 Difference]: Finished difference Result 22089 states and 28950 transitions. [2021-11-05 14:03:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 14:03:37,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 [2021-11-05 14:03:37,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:37,671 INFO L225 Difference]: With dead ends: 22089 [2021-11-05 14:03:37,671 INFO L226 Difference]: Without dead ends: 16242 [2021-11-05 14:03:37,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.65ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:03:37,686 INFO L933 BasicCegarLoop]: 6726 mSDtfsCounter, 4494 mSDsluCounter, 9224 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4494 SdHoareTripleChecker+Valid, 15950 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.14ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.41ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:37,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4494 Valid, 15950 Invalid, 65 Unknown, 0 Unchecked, 12.14ms Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 59.41ms Time] [2021-11-05 14:03:37,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16242 states. [2021-11-05 14:03:38,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16242 to 6492. [2021-11-05 14:03:38,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6492 states, 6485 states have (on average 1.2988434849653046) internal successors, (8423), 6491 states have internal predecessors, (8423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:38,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6492 states to 6492 states and 8423 transitions. [2021-11-05 14:03:38,088 INFO L78 Accepts]: Start accepts. Automaton has 6492 states and 8423 transitions. Word has length 70 [2021-11-05 14:03:38,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:38,088 INFO L470 AbstractCegarLoop]: Abstraction has 6492 states and 8423 transitions. [2021-11-05 14:03:38,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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) [2021-11-05 14:03:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 6492 states and 8423 transitions. [2021-11-05 14:03:38,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-05 14:03:38,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:38,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:03:38,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 14:03:38,092 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 14:03:38,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:38,092 INFO L85 PathProgramCache]: Analyzing trace with hash -633292561, now seen corresponding path program 1 times [2021-11-05 14:03:38,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:03:38,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786048984] [2021-11-05 14:03:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:38,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:03:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:38,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:03:38,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786048984] [2021-11-05 14:03:38,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786048984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:38,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:38,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 14:03:38,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185707201] [2021-11-05 14:03:38,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:38,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 14:03:38,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:03:38,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 14:03:38,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:03:38,461 INFO L87 Difference]: Start difference. First operand 6492 states and 8423 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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) [2021-11-05 14:03:40,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 14:03:42,618 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 14:03:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:45,813 INFO L93 Difference]: Finished difference Result 8969 states and 11688 transitions. [2021-11-05 14:03:45,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 14:03:45,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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 [2021-11-05 14:03:45,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:45,818 INFO L225 Difference]: With dead ends: 8969 [2021-11-05 14:03:45,818 INFO L226 Difference]: Without dead ends: 2492 [2021-11-05 14:03:45,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.33ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 14:03:45,826 INFO L933 BasicCegarLoop]: 2136 mSDtfsCounter, 9 mSDsluCounter, 5594 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6633.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 7730 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.71ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7111.09ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:45,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 7730 Invalid, 848 Unknown, 0 Unchecked, 10.71ms Time], IncrementalHoareTripleChecker [6 Valid, 840 Invalid, 2 Unknown, 0 Unchecked, 7111.09ms Time] [2021-11-05 14:03:45,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2021-11-05 14:03:45,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2486. [2021-11-05 14:03:45,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2484 states have (on average 1.318035426731079) internal successors, (3274), 2485 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:45,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3274 transitions. [2021-11-05 14:03:45,975 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3274 transitions. Word has length 70 [2021-11-05 14:03:45,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:45,976 INFO L470 AbstractCegarLoop]: Abstraction has 2486 states and 3274 transitions. [2021-11-05 14:03:45,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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) [2021-11-05 14:03:45,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3274 transitions. [2021-11-05 14:03:45,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-05 14:03:45,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:45,979 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:03:45,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 14:03:45,979 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 14:03:45,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:45,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1099507130, now seen corresponding path program 1 times [2021-11-05 14:03:45,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:03:45,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640108301] [2021-11-05 14:03:45,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:45,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:03:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:46,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:46,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:03:46,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640108301] [2021-11-05 14:03:46,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640108301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:46,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:46,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 14:03:46,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319974467] [2021-11-05 14:03:46,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:46,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:03:46,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:03:46,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:03:46,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:03:46,155 INFO L87 Difference]: Start difference. First operand 2486 states and 3274 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:48,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:48,517 INFO L93 Difference]: Finished difference Result 5223 states and 6882 transitions. [2021-11-05 14:03:48,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 14:03:48,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-05 14:03:48,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:48,523 INFO L225 Difference]: With dead ends: 5223 [2021-11-05 14:03:48,523 INFO L226 Difference]: Without dead ends: 2752 [2021-11-05 14:03:48,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.76ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:03:48,528 INFO L933 BasicCegarLoop]: 2102 mSDtfsCounter, 327 mSDsluCounter, 3827 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1984.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 5929 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.97ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2159.66ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:48,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 5929 Invalid, 504 Unknown, 0 Unchecked, 6.97ms Time], IncrementalHoareTripleChecker [1 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 2159.66ms Time] [2021-11-05 14:03:48,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2021-11-05 14:03:48,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 2680. [2021-11-05 14:03:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2678 states have (on average 1.3174010455563854) internal successors, (3528), 2679 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 3528 transitions. [2021-11-05 14:03:48,689 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 3528 transitions. Word has length 84 [2021-11-05 14:03:48,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:48,690 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 3528 transitions. [2021-11-05 14:03:48,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:48,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 3528 transitions. [2021-11-05 14:03:48,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-05 14:03:48,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:48,699 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:03:48,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 14:03:48,700 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 14:03:48,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:48,700 INFO L85 PathProgramCache]: Analyzing trace with hash 367539704, now seen corresponding path program 1 times [2021-11-05 14:03:48,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:03:48,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837021077] [2021-11-05 14:03:48,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:48,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:03:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:48,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:03:48,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837021077] [2021-11-05 14:03:48,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837021077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:48,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:48,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 14:03:48,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307380983] [2021-11-05 14:03:48,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:48,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 14:03:48,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:03:48,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 14:03:48,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:03:48,921 INFO L87 Difference]: Start difference. First operand 2680 states and 3528 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:49,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:49,520 INFO L93 Difference]: Finished difference Result 11550 states and 15192 transitions. [2021-11-05 14:03:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 14:03:49,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-05 14:03:49,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:49,543 INFO L225 Difference]: With dead ends: 11550 [2021-11-05 14:03:49,543 INFO L226 Difference]: Without dead ends: 9079 [2021-11-05 14:03:49,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 28.37ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 14:03:49,551 INFO L933 BasicCegarLoop]: 5051 mSDtfsCounter, 7979 mSDsluCounter, 10317 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7979 SdHoareTripleChecker+Valid, 15368 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.20ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.23ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:49,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7979 Valid, 15368 Invalid, 34 Unknown, 0 Unchecked, 14.20ms Time], IncrementalHoareTripleChecker [11 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 49.23ms Time] [2021-11-05 14:03:49,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9079 states. [2021-11-05 14:03:49,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9079 to 2684. [2021-11-05 14:03:49,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 2682 states have (on average 1.3169276659209546) internal successors, (3532), 2683 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:49,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 3532 transitions. [2021-11-05 14:03:49,769 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 3532 transitions. Word has length 84 [2021-11-05 14:03:49,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:49,770 INFO L470 AbstractCegarLoop]: Abstraction has 2684 states and 3532 transitions. [2021-11-05 14:03:49,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:49,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 3532 transitions. [2021-11-05 14:03:49,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 14:03:49,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:49,773 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:03:49,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 14:03:49,774 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 14:03:49,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:49,774 INFO L85 PathProgramCache]: Analyzing trace with hash 293074773, now seen corresponding path program 1 times [2021-11-05 14:03:49,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:03:49,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463617573] [2021-11-05 14:03:49,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:49,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:03:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:49,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:03:49,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463617573] [2021-11-05 14:03:49,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463617573] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 14:03:49,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665631621] [2021-11-05 14:03:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:49,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 14:03:49,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 14:03:49,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 14:03:50,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 14:03:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:50,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 2767 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 14:03:50,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:03:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:51,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:03:51,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:51,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665631621] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 14:03:51,342 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 14:03:51,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-05 14:03:51,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982158346] [2021-11-05 14:03:51,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 14:03:51,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 14:03:51,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:03:51,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 14:03:51,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:03:51,343 INFO L87 Difference]: Start difference. First operand 2684 states and 3532 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:51,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:51,760 INFO L93 Difference]: Finished difference Result 6855 states and 9030 transitions. [2021-11-05 14:03:51,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 14:03:51,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-05 14:03:51,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:51,768 INFO L225 Difference]: With dead ends: 6855 [2021-11-05 14:03:51,769 INFO L226 Difference]: Without dead ends: 4380 [2021-11-05 14:03:51,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.80ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:03:51,774 INFO L933 BasicCegarLoop]: 2137 mSDtfsCounter, 5977 mSDsluCounter, 5010 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5977 SdHoareTripleChecker+Valid, 7147 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.01ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.62ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:51,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5977 Valid, 7147 Invalid, 41 Unknown, 0 Unchecked, 9.01ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 46.62ms Time] [2021-11-05 14:03:51,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4380 states. [2021-11-05 14:03:52,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4380 to 4380. [2021-11-05 14:03:52,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4380 states, 4378 states have (on average 1.3172681589767017) internal successors, (5767), 4379 states have internal predecessors, (5767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:52,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 5767 transitions. [2021-11-05 14:03:52,054 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 5767 transitions. Word has length 86 [2021-11-05 14:03:52,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:52,055 INFO L470 AbstractCegarLoop]: Abstraction has 4380 states and 5767 transitions. [2021-11-05 14:03:52,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:52,055 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 5767 transitions. [2021-11-05 14:03:52,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-05 14:03:52,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:52,064 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:03:52,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 14:03:52,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-05 14:03:52,288 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 14:03:52,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:52,288 INFO L85 PathProgramCache]: Analyzing trace with hash -259041133, now seen corresponding path program 1 times [2021-11-05 14:03:52,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:03:52,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747774111] [2021-11-05 14:03:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:52,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:03:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:52,596 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-05 14:03:52,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:03:52,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747774111] [2021-11-05 14:03:52,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747774111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:52,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:52,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 14:03:52,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94841764] [2021-11-05 14:03:52,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:52,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:03:52,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:03:52,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:03:52,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:03:52,599 INFO L87 Difference]: Start difference. First operand 4380 states and 5767 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:53,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:53,774 INFO L93 Difference]: Finished difference Result 20784 states and 27429 transitions. [2021-11-05 14:03:53,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 14:03:53,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 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 167 [2021-11-05 14:03:53,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:53,803 INFO L225 Difference]: With dead ends: 20784 [2021-11-05 14:03:53,804 INFO L226 Difference]: Without dead ends: 16613 [2021-11-05 14:03:53,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.47ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:03:53,817 INFO L933 BasicCegarLoop]: 6213 mSDtfsCounter, 6083 mSDsluCounter, 8341 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6083 SdHoareTripleChecker+Valid, 14554 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.92ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.16ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:53,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6083 Valid, 14554 Invalid, 26 Unknown, 0 Unchecked, 12.92ms Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 42.16ms Time] [2021-11-05 14:03:53,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16613 states. [2021-11-05 14:03:54,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16613 to 4382. [2021-11-05 14:03:54,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4380 states have (on average 1.3171232876712329) internal successors, (5769), 4381 states have internal predecessors, (5769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:54,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5769 transitions. [2021-11-05 14:03:54,265 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5769 transitions. Word has length 167 [2021-11-05 14:03:54,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:54,265 INFO L470 AbstractCegarLoop]: Abstraction has 4382 states and 5769 transitions. [2021-11-05 14:03:54,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:54,265 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5769 transitions. [2021-11-05 14:03:54,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-05 14:03:54,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:54,273 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:03:54,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 14:03:54,273 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 14:03:54,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:54,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1160822693, now seen corresponding path program 1 times [2021-11-05 14:03:54,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:03:54,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248898336] [2021-11-05 14:03:54,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:54,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:03:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:54,576 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-05 14:03:54,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:03:54,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248898336] [2021-11-05 14:03:54,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248898336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:54,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:54,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 14:03:54,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330391008] [2021-11-05 14:03:54,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:54,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:03:54,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:03:54,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:03:54,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:03:54,579 INFO L87 Difference]: Start difference. First operand 4382 states and 5769 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:55,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:55,905 INFO L93 Difference]: Finished difference Result 20558 states and 27136 transitions. [2021-11-05 14:03:55,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 14:03:55,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-05 14:03:55,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:55,908 INFO L225 Difference]: With dead ends: 20558 [2021-11-05 14:03:55,908 INFO L226 Difference]: Without dead ends: 0 [2021-11-05 14:03:55,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.54ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:03:55,933 INFO L933 BasicCegarLoop]: 6164 mSDtfsCounter, 6082 mSDsluCounter, 8233 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6082 SdHoareTripleChecker+Valid, 14397 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.96ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.51ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:55,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6082 Valid, 14397 Invalid, 25 Unknown, 0 Unchecked, 12.96ms Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 39.51ms Time] [2021-11-05 14:03:55,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-05 14:03:55,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-05 14:03:55,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:55,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-05 14:03:55,934 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2021-11-05 14:03:55,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:55,934 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-05 14:03:55,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 14:03:55,935 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-05 14:03:55,935 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-05 14:03:55,937 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2021-11-05 14:03:55,937 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2021-11-05 14:03:55,937 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2021-11-05 14:03:55,937 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2021-11-05 14:03:55,938 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2021-11-05 14:03:55,938 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2021-11-05 14:03:55,938 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2021-11-05 14:03:55,938 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2021-11-05 14:03:55,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 14:03:55,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-05 14:04:08,946 WARN L230 SmtUtils]: Spent 10.25s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:04:18,959 WARN L230 SmtUtils]: Spent 10.01s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:04:28,522 WARN L230 SmtUtils]: Spent 9.56s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:04:39,441 WARN L230 SmtUtils]: Spent 9.68s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:04:49,055 WARN L230 SmtUtils]: Spent 9.61s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:05:00,985 WARN L230 SmtUtils]: Spent 9.49s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:05:10,484 WARN L230 SmtUtils]: Spent 9.50s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:05:22,246 WARN L230 SmtUtils]: Spent 9.53s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:05:33,022 WARN L230 SmtUtils]: Spent 9.55s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:05:44,852 WARN L230 SmtUtils]: Spent 9.55s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:06:00,097 WARN L230 SmtUtils]: Spent 9.48s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:06:09,690 WARN L230 SmtUtils]: Spent 9.59s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:06:22,916 WARN L230 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:06:32,593 WARN L230 SmtUtils]: Spent 9.68s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:06:42,072 WARN L230 SmtUtils]: Spent 9.47s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:06:51,631 WARN L230 SmtUtils]: Spent 9.56s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:07:05,732 WARN L230 SmtUtils]: Spent 9.63s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:07:17,639 WARN L230 SmtUtils]: Spent 9.65s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:07:30,935 WARN L230 SmtUtils]: Spent 9.55s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:07:40,478 WARN L230 SmtUtils]: Spent 9.54s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:07:49,945 WARN L230 SmtUtils]: Spent 9.47s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:07:59,410 WARN L230 SmtUtils]: Spent 9.46s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:08:09,978 WARN L230 SmtUtils]: Spent 9.37s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:08:19,560 WARN L230 SmtUtils]: Spent 9.58s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:08:29,016 WARN L230 SmtUtils]: Spent 9.46s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:08:38,418 WARN L230 SmtUtils]: Spent 9.40s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:08:50,319 WARN L230 SmtUtils]: Spent 9.48s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:09:04,198 WARN L230 SmtUtils]: Spent 9.43s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:09:17,031 WARN L230 SmtUtils]: Spent 9.43s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:09:26,524 WARN L230 SmtUtils]: Spent 9.49s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:09:38,120 WARN L230 SmtUtils]: Spent 9.37s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:09:51,154 WARN L230 SmtUtils]: Spent 9.42s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:10:01,768 WARN L230 SmtUtils]: Spent 9.42s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:10:11,719 WARN L230 SmtUtils]: Spent 9.45s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:10:21,266 WARN L230 SmtUtils]: Spent 9.55s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:10:33,127 WARN L230 SmtUtils]: Spent 9.45s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:10:44,807 WARN L230 SmtUtils]: Spent 9.44s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:10:55,429 WARN L230 SmtUtils]: Spent 9.43s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:11:05,077 WARN L230 SmtUtils]: Spent 9.65s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:11:14,545 WARN L230 SmtUtils]: Spent 9.47s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:11:28,870 WARN L230 SmtUtils]: Spent 11.92s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:11:42,145 WARN L230 SmtUtils]: Spent 12.05s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:11:53,850 WARN L230 SmtUtils]: Spent 9.45s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:12:03,180 WARN L230 SmtUtils]: Spent 9.33s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:12:14,983 WARN L230 SmtUtils]: Spent 9.40s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:12:24,444 WARN L230 SmtUtils]: Spent 9.46s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:12:33,849 WARN L230 SmtUtils]: Spent 9.40s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:12:45,588 WARN L230 SmtUtils]: Spent 9.48s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:12:54,983 WARN L230 SmtUtils]: Spent 9.39s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:13:04,369 WARN L230 SmtUtils]: Spent 9.39s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:13:15,010 WARN L230 SmtUtils]: Spent 9.45s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:13:24,445 WARN L230 SmtUtils]: Spent 9.43s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:13:33,937 WARN L230 SmtUtils]: Spent 9.49s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:13:43,329 WARN L230 SmtUtils]: Spent 9.39s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:13:54,044 WARN L230 SmtUtils]: Spent 9.48s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:14:03,437 WARN L230 SmtUtils]: Spent 9.39s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:14:12,923 WARN L230 SmtUtils]: Spent 9.48s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:14:24,793 WARN L230 SmtUtils]: Spent 9.47s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:14:35,431 WARN L230 SmtUtils]: Spent 9.42s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:14:47,432 WARN L230 SmtUtils]: Spent 9.55s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:14:56,936 WARN L230 SmtUtils]: Spent 9.50s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:15:06,441 WARN L230 SmtUtils]: Spent 9.50s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:15:15,954 WARN L230 SmtUtils]: Spent 9.51s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:15:25,455 WARN L230 SmtUtils]: Spent 9.50s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:15:34,932 WARN L230 SmtUtils]: Spent 9.48s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:15:49,093 WARN L230 SmtUtils]: Spent 9.44s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:15:58,507 WARN L230 SmtUtils]: Spent 9.41s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:16:07,878 WARN L230 SmtUtils]: Spent 9.37s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:16:17,552 WARN L230 SmtUtils]: Spent 9.67s on a formula simplification that was a NOOP. DAG size: 148 [2021-11-05 14:16:27,016 WARN L230 SmtUtils]: Spent 9.46s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:16:37,707 WARN L230 SmtUtils]: Spent 9.51s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:16:49,380 WARN L230 SmtUtils]: Spent 9.44s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:17:02,360 WARN L230 SmtUtils]: Spent 9.58s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:17:14,068 WARN L230 SmtUtils]: Spent 9.47s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:17:23,557 WARN L230 SmtUtils]: Spent 9.49s on a formula simplification that was a NOOP. DAG size: 140 [2021-11-05 14:17:34,370 WARN L230 SmtUtils]: Spent 9.60s on a formula simplification that was a NOOP. DAG size: 140 Killed by 15