./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.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 abfdd6ea704cd13da9f6c4fa68989a6001819ce06b341c8a00315bc983ef4819 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 20:08:27,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 20:08:27,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 20:08:27,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 20:08:27,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 20:08:27,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 20:08:27,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 20:08:27,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 20:08:27,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 20:08:27,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 20:08:27,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 20:08:27,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 20:08:27,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 20:08:27,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 20:08:27,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 20:08:27,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 20:08:27,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 20:08:27,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 20:08:27,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 20:08:27,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 20:08:27,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 20:08:27,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 20:08:27,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 20:08:27,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 20:08:27,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 20:08:27,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 20:08:27,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 20:08:27,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 20:08:27,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 20:08:27,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 20:08:27,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 20:08:27,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 20:08:27,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 20:08:27,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 20:08:27,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 20:08:27,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 20:08:27,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 20:08:27,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 20:08:27,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 20:08:27,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 20:08:27,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 20:08:27,492 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 20:08:27,515 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 20:08:27,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 20:08:27,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 20:08:27,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 20:08:27,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 20:08:27,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 20:08:27,518 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 20:08:27,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 20:08:27,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 20:08:27,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 20:08:27,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 20:08:27,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 20:08:27,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 20:08:27,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 20:08:27,519 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 20:08:27,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 20:08:27,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 20:08:27,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 20:08:27,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 20:08:27,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:08:27,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 20:08:27,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 20:08:27,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 20:08:27,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 20:08:27,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 20:08:27,521 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 20:08:27,521 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 20:08:27,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 20:08:27,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 20:08:27,522 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abfdd6ea704cd13da9f6c4fa68989a6001819ce06b341c8a00315bc983ef4819 [2021-11-06 20:08:27,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 20:08:27,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 20:08:27,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 20:08:27,739 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 20:08:27,740 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 20:08:27,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-06 20:08:27,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a40125e/d4646e8e060d4948921e9ec1aa13168d/FLAGe0cc986fe [2021-11-06 20:08:28,364 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 20:08:28,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-06 20:08:28,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a40125e/d4646e8e060d4948921e9ec1aa13168d/FLAGe0cc986fe [2021-11-06 20:08:28,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a40125e/d4646e8e060d4948921e9ec1aa13168d [2021-11-06 20:08:28,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 20:08:28,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 20:08:28,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 20:08:28,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 20:08:28,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 20:08:28,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:08:28" (1/1) ... [2021-11-06 20:08:28,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37626724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:08:28, skipping insertion in model container [2021-11-06 20:08:28,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:08:28" (1/1) ... [2021-11-06 20:08:28,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 20:08:28,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 20:08:31,093 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422956,422969] [2021-11-06 20:08:31,116 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[423101,423114] [2021-11-06 20:08:31,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:08:31,181 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 20:08:31,474 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422956,422969] [2021-11-06 20:08:31,475 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[423101,423114] [2021-11-06 20:08:31,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:08:31,663 INFO L208 MainTranslator]: Completed translation [2021-11-06 20:08:31,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:08:31 WrapperNode [2021-11-06 20:08:31,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 20:08:31,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 20:08:31,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 20:08:31,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 20:08:31,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:08:31" (1/1) ... [2021-11-06 20:08:31,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:08:31" (1/1) ... [2021-11-06 20:08:33,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 20:08:33,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 20:08:33,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 20:08:33,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 20:08:33,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:08:31" (1/1) ... [2021-11-06 20:08:33,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:08:31" (1/1) ... [2021-11-06 20:08:33,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:08:31" (1/1) ... [2021-11-06 20:08:33,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:08:31" (1/1) ... [2021-11-06 20:08:34,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:08:31" (1/1) ... [2021-11-06 20:08:34,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:08:31" (1/1) ... [2021-11-06 20:08:35,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:08:31" (1/1) ... [2021-11-06 20:08:35,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 20:08:35,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 20:08:35,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 20:08:35,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 20:08:35,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:08:31" (1/1) ... [2021-11-06 20:08:35,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:08:35,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 20:08:35,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 20:08:35,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 20:08:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 20:08:35,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 20:08:35,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 20:08:35,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 20:08:35,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 20:08:35,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 20:08:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 20:08:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 20:08:35,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 20:08:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 20:08:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 20:08:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-06 20:08:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 20:08:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 20:08:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 20:08:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 20:08:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 20:09:59,170 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 20:09:59,170 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 20:09:59,170 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-06 20:09:59,170 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-06 20:09:59,170 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-06 20:09:59,171 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#5: ldv_switch_2_#res := 0; [2021-11-06 20:09:59,171 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#6: ldv_switch_2_#res := 0; [2021-11-06 20:09:59,171 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#7: ldv_switch_2_#res := 0; [2021-11-06 20:09:59,171 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#8: ldv_switch_2_#res := 0; [2021-11-06 20:09:59,173 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 20:09:59,174 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 20:09:59,174 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-06 20:09:59,175 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 20:09:59,177 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 20:09:59,178 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-06 20:09:59,178 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 20:09:59,220 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 20:09:59,221 INFO L299 CfgBuilder]: Removed 18514 assume(true) statements. [2021-11-06 20:09:59,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:09:59 BoogieIcfgContainer [2021-11-06 20:09:59,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 20:09:59,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 20:09:59,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 20:09:59,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 20:09:59,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:08:28" (1/3) ... [2021-11-06 20:09:59,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd6fdb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:09:59, skipping insertion in model container [2021-11-06 20:09:59,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:08:31" (2/3) ... [2021-11-06 20:09:59,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd6fdb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:09:59, skipping insertion in model container [2021-11-06 20:09:59,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:09:59" (3/3) ... [2021-11-06 20:09:59,243 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2021-11-06 20:09:59,249 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 20:09:59,249 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2021-11-06 20:09:59,313 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 20:09:59,318 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 20:09:59,319 INFO L340 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2021-11-06 20:09:59,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 12060 states, 12034 states have (on average 1.3249127472162208) internal successors, (15944), 12059 states have internal predecessors, (15944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:09:59,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 20:09:59,455 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:09:59,456 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:09:59,456 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-06 20:09:59,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:09:59,460 INFO L85 PathProgramCache]: Analyzing trace with hash -918786885, now seen corresponding path program 1 times [2021-11-06 20:09:59,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:09:59,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397070808] [2021-11-06 20:09:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:09:59,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:09:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:10:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:10:00,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:10:00,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397070808] [2021-11-06 20:10:00,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397070808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:10:00,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:10:00,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:10:00,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284789847] [2021-11-06 20:10:00,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:10:00,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:10:00,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:10:00,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:10:00,153 INFO L87 Difference]: Start difference. First operand has 12060 states, 12034 states have (on average 1.3249127472162208) internal successors, (15944), 12059 states have internal predecessors, (15944), 0 states have call successors, (0), 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 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:03,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:10:03,087 INFO L93 Difference]: Finished difference Result 29606 states and 39168 transitions. [2021-11-06 20:10:03,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:10:03,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-11-06 20:10:03,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:10:03,165 INFO L225 Difference]: With dead ends: 29606 [2021-11-06 20:10:03,166 INFO L226 Difference]: Without dead ends: 16193 [2021-11-06 20:10:03,202 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:10:03,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16193 states. [2021-11-06 20:10:03,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16193 to 16157. [2021-11-06 20:10:03,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16157 states, 16131 states have (on average 1.3032050089889033) internal successors, (21022), 16156 states have internal predecessors, (21022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:03,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16157 states to 16157 states and 21022 transitions. [2021-11-06 20:10:03,624 INFO L78 Accepts]: Start accepts. Automaton has 16157 states and 21022 transitions. Word has length 89 [2021-11-06 20:10:03,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:10:03,626 INFO L470 AbstractCegarLoop]: Abstraction has 16157 states and 21022 transitions. [2021-11-06 20:10:03,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:03,629 INFO L276 IsEmpty]: Start isEmpty. Operand 16157 states and 21022 transitions. [2021-11-06 20:10:03,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 20:10:03,637 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:10:03,637 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:10:03,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 20:10:03,638 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-06 20:10:03,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:10:03,640 INFO L85 PathProgramCache]: Analyzing trace with hash -37629154, now seen corresponding path program 1 times [2021-11-06 20:10:03,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:10:03,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151163452] [2021-11-06 20:10:03,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:10:03,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:10:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:10:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:10:03,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:10:03,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151163452] [2021-11-06 20:10:03,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151163452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:10:03,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:10:03,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:10:03,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154780202] [2021-11-06 20:10:03,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:10:03,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:10:03,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:10:03,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:10:03,885 INFO L87 Difference]: Start difference. First operand 16157 states and 21022 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:07,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:10:07,045 INFO L93 Difference]: Finished difference Result 42539 states and 55417 transitions. [2021-11-06 20:10:07,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:10:07,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-06 20:10:07,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:10:07,134 INFO L225 Difference]: With dead ends: 42539 [2021-11-06 20:10:07,134 INFO L226 Difference]: Without dead ends: 26490 [2021-11-06 20:10:07,173 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:10:07,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26490 states. [2021-11-06 20:10:07,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26490 to 26148. [2021-11-06 20:10:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26148 states, 26122 states have (on average 1.3062935456703162) internal successors, (34123), 26147 states have internal predecessors, (34123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26148 states to 26148 states and 34123 transitions. [2021-11-06 20:10:07,714 INFO L78 Accepts]: Start accepts. Automaton has 26148 states and 34123 transitions. Word has length 101 [2021-11-06 20:10:07,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:10:07,719 INFO L470 AbstractCegarLoop]: Abstraction has 26148 states and 34123 transitions. [2021-11-06 20:10:07,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand 26148 states and 34123 transitions. [2021-11-06 20:10:07,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-06 20:10:07,729 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:10:07,729 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:10:07,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 20:10:07,730 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-06 20:10:07,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:10:07,730 INFO L85 PathProgramCache]: Analyzing trace with hash 436110901, now seen corresponding path program 1 times [2021-11-06 20:10:07,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:10:07,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209124204] [2021-11-06 20:10:07,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:10:07,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:10:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:10:08,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:10:08,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:10:08,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209124204] [2021-11-06 20:10:08,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209124204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:10:08,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:10:08,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 20:10:08,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298750689] [2021-11-06 20:10:08,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:10:08,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:10:08,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:10:08,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:10:08,321 INFO L87 Difference]: Start difference. First operand 26148 states and 34123 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:13,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:10:13,103 INFO L93 Difference]: Finished difference Result 78078 states and 101941 transitions. [2021-11-06 20:10:13,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:10:13,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2021-11-06 20:10:13,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:10:13,236 INFO L225 Difference]: With dead ends: 78078 [2021-11-06 20:10:13,237 INFO L226 Difference]: Without dead ends: 52038 [2021-11-06 20:10:13,301 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:10:13,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52038 states. [2021-11-06 20:10:14,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52038 to 51914. [2021-11-06 20:10:14,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51914 states, 51888 states have (on average 1.3071423065063212) internal successors, (67825), 51913 states have internal predecessors, (67825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51914 states to 51914 states and 67825 transitions. [2021-11-06 20:10:14,737 INFO L78 Accepts]: Start accepts. Automaton has 51914 states and 67825 transitions. Word has length 130 [2021-11-06 20:10:14,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:10:14,739 INFO L470 AbstractCegarLoop]: Abstraction has 51914 states and 67825 transitions. [2021-11-06 20:10:14,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:14,739 INFO L276 IsEmpty]: Start isEmpty. Operand 51914 states and 67825 transitions. [2021-11-06 20:10:14,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-06 20:10:14,745 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:10:14,745 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:10:14,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 20:10:14,745 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-06 20:10:14,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:10:14,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1697028151, now seen corresponding path program 1 times [2021-11-06 20:10:14,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:10:14,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501292550] [2021-11-06 20:10:14,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:10:14,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:10:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:10:14,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:10:14,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:10:14,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501292550] [2021-11-06 20:10:14,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501292550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:10:14,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:10:14,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:10:14,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830174174] [2021-11-06 20:10:14,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:10:14,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:10:14,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:10:14,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:10:14,975 INFO L87 Difference]: Start difference. First operand 51914 states and 67825 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:18,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:10:18,625 INFO L93 Difference]: Finished difference Result 118050 states and 154375 transitions. [2021-11-06 20:10:18,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:10:18,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2021-11-06 20:10:18,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:10:18,767 INFO L225 Difference]: With dead ends: 118050 [2021-11-06 20:10:18,767 INFO L226 Difference]: Without dead ends: 66244 [2021-11-06 20:10:18,841 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:10:18,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66244 states. [2021-11-06 20:10:20,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66244 to 66196. [2021-11-06 20:10:20,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66196 states, 66170 states have (on average 1.3084328245428443) internal successors, (86579), 66195 states have internal predecessors, (86579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66196 states to 66196 states and 86579 transitions. [2021-11-06 20:10:20,237 INFO L78 Accepts]: Start accepts. Automaton has 66196 states and 86579 transitions. Word has length 130 [2021-11-06 20:10:20,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:10:20,238 INFO L470 AbstractCegarLoop]: Abstraction has 66196 states and 86579 transitions. [2021-11-06 20:10:20,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:20,238 INFO L276 IsEmpty]: Start isEmpty. Operand 66196 states and 86579 transitions. [2021-11-06 20:10:20,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-06 20:10:20,246 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:10:20,246 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:10:20,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 20:10:20,246 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-06 20:10:20,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:10:20,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1318979706, now seen corresponding path program 1 times [2021-11-06 20:10:20,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:10:20,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873980747] [2021-11-06 20:10:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:10:20,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:10:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:10:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 20:10:20,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:10:20,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873980747] [2021-11-06 20:10:20,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873980747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:10:20,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:10:20,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:10:20,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616360822] [2021-11-06 20:10:20,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:10:20,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:10:20,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:10:20,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:10:20,745 INFO L87 Difference]: Start difference. First operand 66196 states and 86579 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:24,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:10:24,278 INFO L93 Difference]: Finished difference Result 146598 states and 191851 transitions. [2021-11-06 20:10:24,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:10:24,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 [2021-11-06 20:10:24,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:10:24,469 INFO L225 Difference]: With dead ends: 146598 [2021-11-06 20:10:24,469 INFO L226 Difference]: Without dead ends: 80510 [2021-11-06 20:10:24,542 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:10:24,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80510 states. [2021-11-06 20:10:25,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80510 to 80462. [2021-11-06 20:10:25,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80462 states, 80436 states have (on average 1.3093266696504053) internal successors, (105317), 80461 states have internal predecessors, (105317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:26,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80462 states to 80462 states and 105317 transitions. [2021-11-06 20:10:26,050 INFO L78 Accepts]: Start accepts. Automaton has 80462 states and 105317 transitions. Word has length 167 [2021-11-06 20:10:26,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:10:26,051 INFO L470 AbstractCegarLoop]: Abstraction has 80462 states and 105317 transitions. [2021-11-06 20:10:26,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:26,051 INFO L276 IsEmpty]: Start isEmpty. Operand 80462 states and 105317 transitions. [2021-11-06 20:10:26,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-06 20:10:26,058 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:10:26,058 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:10:26,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 20:10:26,059 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-06 20:10:26,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:10:26,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1672068088, now seen corresponding path program 1 times [2021-11-06 20:10:26,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:10:26,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837222110] [2021-11-06 20:10:26,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:10:26,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:10:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:10:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 20:10:26,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:10:26,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837222110] [2021-11-06 20:10:26,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837222110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:10:26,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:10:26,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:10:26,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615810600] [2021-11-06 20:10:26,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:10:26,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:10:26,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:10:26,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:10:26,469 INFO L87 Difference]: Start difference. First operand 80462 states and 105317 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:10:30,220 INFO L93 Difference]: Finished difference Result 175142 states and 229351 transitions. [2021-11-06 20:10:30,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:10:30,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 [2021-11-06 20:10:30,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:10:30,394 INFO L225 Difference]: With dead ends: 175142 [2021-11-06 20:10:30,394 INFO L226 Difference]: Without dead ends: 94788 [2021-11-06 20:10:30,491 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:10:30,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94788 states. [2021-11-06 20:10:32,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94788 to 94740. [2021-11-06 20:10:32,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94740 states, 94714 states have (on average 1.3099119454357329) internal successors, (124067), 94739 states have internal predecessors, (124067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:32,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94740 states to 94740 states and 124067 transitions. [2021-11-06 20:10:32,427 INFO L78 Accepts]: Start accepts. Automaton has 94740 states and 124067 transitions. Word has length 167 [2021-11-06 20:10:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:10:32,427 INFO L470 AbstractCegarLoop]: Abstraction has 94740 states and 124067 transitions. [2021-11-06 20:10:32,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:32,427 INFO L276 IsEmpty]: Start isEmpty. Operand 94740 states and 124067 transitions. [2021-11-06 20:10:32,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-06 20:10:32,443 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:10:32,443 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:10:32,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 20:10:32,443 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-06 20:10:32,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:10:32,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1733662153, now seen corresponding path program 1 times [2021-11-06 20:10:32,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:10:32,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396303174] [2021-11-06 20:10:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:10:32,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:10:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:10:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 20:10:32,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:10:32,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396303174] [2021-11-06 20:10:32,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396303174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:10:32,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:10:32,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:10:32,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953302714] [2021-11-06 20:10:32,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:10:32,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:10:32,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:10:32,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:10:32,669 INFO L87 Difference]: Start difference. First operand 94740 states and 124067 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:36,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:10:36,845 INFO L93 Difference]: Finished difference Result 203690 states and 266835 transitions. [2021-11-06 20:10:36,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:10:36,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2021-11-06 20:10:36,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:10:37,063 INFO L225 Difference]: With dead ends: 203690 [2021-11-06 20:10:37,064 INFO L226 Difference]: Without dead ends: 109058 [2021-11-06 20:10:37,184 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:10:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109058 states. [2021-11-06 20:10:39,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109058 to 109010. [2021-11-06 20:10:39,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109010 states, 108984 states have (on average 1.3103666593261396) internal successors, (142809), 109009 states have internal predecessors, (142809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:39,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109010 states to 109010 states and 142809 transitions. [2021-11-06 20:10:39,548 INFO L78 Accepts]: Start accepts. Automaton has 109010 states and 142809 transitions. Word has length 203 [2021-11-06 20:10:39,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:10:39,548 INFO L470 AbstractCegarLoop]: Abstraction has 109010 states and 142809 transitions. [2021-11-06 20:10:39,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:39,549 INFO L276 IsEmpty]: Start isEmpty. Operand 109010 states and 142809 transitions. [2021-11-06 20:10:39,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-06 20:10:39,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:10:39,557 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:10:39,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 20:10:39,557 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-06 20:10:39,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:10:39,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1380573771, now seen corresponding path program 1 times [2021-11-06 20:10:39,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:10:39,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163623316] [2021-11-06 20:10:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:10:39,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:10:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:10:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 20:10:39,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:10:39,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163623316] [2021-11-06 20:10:39,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163623316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:10:39,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:10:39,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:10:39,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014063379] [2021-11-06 20:10:39,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:10:39,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:10:39,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:10:39,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:10:39,749 INFO L87 Difference]: Start difference. First operand 109010 states and 142809 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:44,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:10:44,195 INFO L93 Difference]: Finished difference Result 232234 states and 304327 transitions. [2021-11-06 20:10:44,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:10:44,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2021-11-06 20:10:44,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:10:44,438 INFO L225 Difference]: With dead ends: 232234 [2021-11-06 20:10:44,438 INFO L226 Difference]: Without dead ends: 123332 [2021-11-06 20:10:44,548 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:10:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123332 states. [2021-11-06 20:10:46,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123332 to 123284. [2021-11-06 20:10:46,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123284 states, 123258 states have (on average 1.3107059987992666) internal successors, (161555), 123283 states have internal predecessors, (161555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123284 states to 123284 states and 161555 transitions. [2021-11-06 20:10:46,956 INFO L78 Accepts]: Start accepts. Automaton has 123284 states and 161555 transitions. Word has length 203 [2021-11-06 20:10:46,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:10:46,956 INFO L470 AbstractCegarLoop]: Abstraction has 123284 states and 161555 transitions. [2021-11-06 20:10:46,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:10:46,956 INFO L276 IsEmpty]: Start isEmpty. Operand 123284 states and 161555 transitions. [2021-11-06 20:10:46,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-06 20:10:46,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:10:46,966 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:10:46,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 20:10:46,966 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-06 20:10:46,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:10:46,967 INFO L85 PathProgramCache]: Analyzing trace with hash 315021162, now seen corresponding path program 1 times [2021-11-06 20:10:46,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:10:46,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475745254] [2021-11-06 20:10:46,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:10:46,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:10:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat