./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.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-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.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 c26285c798d9eae93470e6619d316c691c81cc1a0579ebf111c5d2cbbd8c7126 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:06:38,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:06:38,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:06:38,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:06:38,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:06:38,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:06:38,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:06:38,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:06:38,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:06:38,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:06:38,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:06:38,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:06:38,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:06:38,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:06:38,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:06:38,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:06:38,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:06:38,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:06:38,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:06:38,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:06:38,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:06:38,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:06:38,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:06:38,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:06:38,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:06:38,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:06:38,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:06:38,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:06:38,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:06:38,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:06:38,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:06:38,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:06:38,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:06:38,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:06:38,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:06:38,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:06:38,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:06:38,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:06:38,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:06:38,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:06:38,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:06:38,341 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:06:38,374 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:06:38,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:06:38,375 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:06:38,375 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:06:38,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:06:38,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:06:38,377 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:06:38,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:06:38,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:06:38,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:06:38,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:06:38,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:06:38,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:06:38,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:06:38,379 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:06:38,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:06:38,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:06:38,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:06:38,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:06:38,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:06:38,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:06:38,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:06:38,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:06:38,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:06:38,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:06:38,381 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:06:38,381 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:06:38,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:06:38,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:06:38,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c26285c798d9eae93470e6619d316c691c81cc1a0579ebf111c5d2cbbd8c7126 [2021-11-06 18:06:38,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:06:38,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:06:38,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:06:38,638 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:06:38,638 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:06:38,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i [2021-11-06 18:06:38,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eb4a0321/664e47d52a954933a5329fce8cebfe67/FLAG248977337 [2021-11-06 18:06:39,416 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:06:39,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i [2021-11-06 18:06:39,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eb4a0321/664e47d52a954933a5329fce8cebfe67/FLAG248977337 [2021-11-06 18:06:39,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eb4a0321/664e47d52a954933a5329fce8cebfe67 [2021-11-06 18:06:39,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:06:39,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:06:39,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:06:39,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:06:39,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:06:39,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:06:39" (1/1) ... [2021-11-06 18:06:39,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5129bac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:39, skipping insertion in model container [2021-11-06 18:06:39,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:06:39" (1/1) ... [2021-11-06 18:06:39,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:06:39,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:06:42,016 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373388,373401] [2021-11-06 18:06:42,019 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373533,373546] [2021-11-06 18:06:42,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:06:42,082 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:06:42,399 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373388,373401] [2021-11-06 18:06:42,400 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373533,373546] [2021-11-06 18:06:42,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:06:42,560 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:06:42,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:42 WrapperNode [2021-11-06 18:06:42,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:06:42,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:06:42,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:06:42,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:06:42,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:42" (1/1) ... [2021-11-06 18:06:42,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:42" (1/1) ... [2021-11-06 18:06:43,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:06:43,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:06:43,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:06:43,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:06:43,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:42" (1/1) ... [2021-11-06 18:06:43,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:42" (1/1) ... [2021-11-06 18:06:43,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:42" (1/1) ... [2021-11-06 18:06:43,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:42" (1/1) ... [2021-11-06 18:06:43,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:42" (1/1) ... [2021-11-06 18:06:44,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:42" (1/1) ... [2021-11-06 18:06:44,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:42" (1/1) ... [2021-11-06 18:06:44,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:06:44,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:06:44,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:06:44,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:06:44,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:42" (1/1) ... [2021-11-06 18:06:44,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:06:44,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:06:44,204 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 18:06:44,226 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 18:06:44,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:06:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:06:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:06:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:06:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:06:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:06:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:06:44,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:06:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:06:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:06:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:06:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:06:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:06:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:06:44,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:07:04,846 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:07:04,846 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 18:07:04,846 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:07:04,847 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:07:04,847 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:07:04,847 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:07:04,875 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:07:04,875 INFO L299 CfgBuilder]: Removed 4615 assume(true) statements. [2021-11-06 18:07:04,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:07:04 BoogieIcfgContainer [2021-11-06 18:07:04,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:07:04,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:07:04,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:07:04,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:07:04,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:06:39" (1/3) ... [2021-11-06 18:07:04,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba9ff03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:07:04, skipping insertion in model container [2021-11-06 18:07:04,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:42" (2/3) ... [2021-11-06 18:07:04,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba9ff03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:07:04, skipping insertion in model container [2021-11-06 18:07:04,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:07:04" (3/3) ... [2021-11-06 18:07:04,886 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i [2021-11-06 18:07:04,890 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:07:04,891 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-06 18:07:04,951 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:07:04,957 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 18:07:04,958 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-06 18:07:05,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 3860 states, 3850 states have (on average 1.32) internal successors, (5082), 3859 states have internal predecessors, (5082), 0 states have call successors, (0), 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 18:07:05,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 18:07:05,036 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:05,037 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] [2021-11-06 18:07:05,038 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:07:05,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:05,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1237024553, now seen corresponding path program 1 times [2021-11-06 18:07:05,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:05,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164653986] [2021-11-06 18:07:05,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:05,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:05,692 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 18:07:05,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:05,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164653986] [2021-11-06 18:07:05,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164653986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:05,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:05,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:07:05,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411481242] [2021-11-06 18:07:05,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:07:05,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:05,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:07:05,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:07:05,723 INFO L87 Difference]: Start difference. First operand has 3860 states, 3850 states have (on average 1.32) internal successors, (5082), 3859 states have internal predecessors, (5082), 0 states have call successors, (0), 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 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 18:07:08,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:08,428 INFO L93 Difference]: Finished difference Result 10547 states and 13876 transitions. [2021-11-06 18:07:08,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:07:08,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-06 18:07:08,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:08,475 INFO L225 Difference]: With dead ends: 10547 [2021-11-06 18:07:08,476 INFO L226 Difference]: Without dead ends: 6523 [2021-11-06 18:07:08,490 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 18:07:08,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2021-11-06 18:07:08,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 6338. [2021-11-06 18:07:08,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6338 states, 6328 states have (on average 1.277496839443742) internal successors, (8084), 6337 states have internal predecessors, (8084), 0 states have call successors, (0), 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 18:07:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6338 states to 6338 states and 8084 transitions. [2021-11-06 18:07:08,740 INFO L78 Accepts]: Start accepts. Automaton has 6338 states and 8084 transitions. Word has length 51 [2021-11-06 18:07:08,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:07:08,742 INFO L470 AbstractCegarLoop]: Abstraction has 6338 states and 8084 transitions. [2021-11-06 18:07:08,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 18:07:08,745 INFO L276 IsEmpty]: Start isEmpty. Operand 6338 states and 8084 transitions. [2021-11-06 18:07:08,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-06 18:07:08,748 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:08,748 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] [2021-11-06 18:07:08,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:07:08,749 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:07:08,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:08,751 INFO L85 PathProgramCache]: Analyzing trace with hash 503253660, now seen corresponding path program 1 times [2021-11-06 18:07:08,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:08,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908199653] [2021-11-06 18:07:08,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:08,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:09,045 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 18:07:09,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:09,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908199653] [2021-11-06 18:07:09,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908199653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:09,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:09,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:07:09,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123043415] [2021-11-06 18:07:09,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:07:09,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:09,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:07:09,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:07:09,051 INFO L87 Difference]: Start difference. First operand 6338 states and 8084 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 18:07:11,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:11,710 INFO L93 Difference]: Finished difference Result 13834 states and 17772 transitions. [2021-11-06 18:07:11,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:07:11,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-06 18:07:11,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:11,741 INFO L225 Difference]: With dead ends: 13834 [2021-11-06 18:07:11,742 INFO L226 Difference]: Without dead ends: 7548 [2021-11-06 18:07:11,756 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 18:07:11,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7548 states. [2021-11-06 18:07:12,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7548 to 7532. [2021-11-06 18:07:12,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7532 states, 7522 states have (on average 1.2898165381547462) internal successors, (9702), 7531 states have internal predecessors, (9702), 0 states have call successors, (0), 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 18:07:12,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 9702 transitions. [2021-11-06 18:07:12,073 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 9702 transitions. Word has length 58 [2021-11-06 18:07:12,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:07:12,074 INFO L470 AbstractCegarLoop]: Abstraction has 7532 states and 9702 transitions. [2021-11-06 18:07:12,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 18:07:12,077 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 9702 transitions. [2021-11-06 18:07:12,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-06 18:07:12,080 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:12,080 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:07:12,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:07:12,082 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:07:12,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:12,082 INFO L85 PathProgramCache]: Analyzing trace with hash 329388047, now seen corresponding path program 1 times [2021-11-06 18:07:12,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:12,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165370243] [2021-11-06 18:07:12,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:12,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:12,304 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 18:07:12,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:12,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165370243] [2021-11-06 18:07:12,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165370243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:12,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:12,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:07:12,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140204027] [2021-11-06 18:07:12,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:07:12,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:12,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:07:12,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:07:12,308 INFO L87 Difference]: Start difference. First operand 7532 states and 9702 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:07:14,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:14,874 INFO L93 Difference]: Finished difference Result 21124 states and 27109 transitions. [2021-11-06 18:07:14,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:07:14,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-06 18:07:14,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:14,946 INFO L225 Difference]: With dead ends: 21124 [2021-11-06 18:07:14,947 INFO L226 Difference]: Without dead ends: 13644 [2021-11-06 18:07:14,963 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 18:07:14,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13644 states. [2021-11-06 18:07:15,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13644 to 13598. [2021-11-06 18:07:15,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13598 states, 13588 states have (on average 1.2815719752722992) internal successors, (17414), 13597 states have internal predecessors, (17414), 0 states have call successors, (0), 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 18:07:15,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13598 states to 13598 states and 17414 transitions. [2021-11-06 18:07:15,315 INFO L78 Accepts]: Start accepts. Automaton has 13598 states and 17414 transitions. Word has length 60 [2021-11-06 18:07:15,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:07:15,317 INFO L470 AbstractCegarLoop]: Abstraction has 13598 states and 17414 transitions. [2021-11-06 18:07:15,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:07:15,318 INFO L276 IsEmpty]: Start isEmpty. Operand 13598 states and 17414 transitions. [2021-11-06 18:07:15,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 18:07:15,319 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:15,320 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] [2021-11-06 18:07:15,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:07:15,320 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:07:15,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:15,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1208918593, now seen corresponding path program 1 times [2021-11-06 18:07:15,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:15,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241578192] [2021-11-06 18:07:15,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:15,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:15,569 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 18:07:15,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:15,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241578192] [2021-11-06 18:07:15,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241578192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:15,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:15,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:07:15,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647781424] [2021-11-06 18:07:15,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:07:15,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:15,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:07:15,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:07:15,575 INFO L87 Difference]: Start difference. First operand 13598 states and 17414 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 18:07:18,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:18,484 INFO L93 Difference]: Finished difference Result 28880 states and 37150 transitions. [2021-11-06 18:07:18,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:07:18,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 [2021-11-06 18:07:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:18,520 INFO L225 Difference]: With dead ends: 28880 [2021-11-06 18:07:18,521 INFO L226 Difference]: Without dead ends: 15334 [2021-11-06 18:07:18,542 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 18:07:18,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15334 states. [2021-11-06 18:07:18,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15334 to 15310. [2021-11-06 18:07:18,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15310 states, 15300 states have (on average 1.2887581699346404) internal successors, (19718), 15309 states have internal predecessors, (19718), 0 states have call successors, (0), 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 18:07:18,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15310 states to 15310 states and 19718 transitions. [2021-11-06 18:07:18,880 INFO L78 Accepts]: Start accepts. Automaton has 15310 states and 19718 transitions. Word has length 86 [2021-11-06 18:07:18,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:07:18,882 INFO L470 AbstractCegarLoop]: Abstraction has 15310 states and 19718 transitions. [2021-11-06 18:07:18,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 18:07:18,882 INFO L276 IsEmpty]: Start isEmpty. Operand 15310 states and 19718 transitions. [2021-11-06 18:07:18,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-06 18:07:18,885 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:18,886 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-06 18:07:18,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:07:18,886 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:07:18,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:18,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1985663429, now seen corresponding path program 1 times [2021-11-06 18:07:18,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:18,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35664655] [2021-11-06 18:07:18,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:18,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:07:19,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:19,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35664655] [2021-11-06 18:07:19,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35664655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:19,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:19,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:07:19,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142742027] [2021-11-06 18:07:19,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:07:19,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:19,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:07:19,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:07:19,153 INFO L87 Difference]: Start difference. First operand 15310 states and 19718 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 18:07:21,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:21,844 INFO L93 Difference]: Finished difference Result 32304 states and 41758 transitions. [2021-11-06 18:07:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:07:21,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 123 [2021-11-06 18:07:21,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:21,890 INFO L225 Difference]: With dead ends: 32304 [2021-11-06 18:07:21,891 INFO L226 Difference]: Without dead ends: 17046 [2021-11-06 18:07:21,924 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 18:07:21,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17046 states. [2021-11-06 18:07:22,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17046 to 17022. [2021-11-06 18:07:22,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17022 states, 17012 states have (on average 1.2954385139901246) internal successors, (22038), 17021 states have internal predecessors, (22038), 0 states have call successors, (0), 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 18:07:22,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17022 states to 17022 states and 22038 transitions. [2021-11-06 18:07:22,545 INFO L78 Accepts]: Start accepts. Automaton has 17022 states and 22038 transitions. Word has length 123 [2021-11-06 18:07:22,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:07:22,547 INFO L470 AbstractCegarLoop]: Abstraction has 17022 states and 22038 transitions. [2021-11-06 18:07:22,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 18:07:22,547 INFO L276 IsEmpty]: Start isEmpty. Operand 17022 states and 22038 transitions. [2021-11-06 18:07:22,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-06 18:07:22,554 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:22,555 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-06 18:07:22,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 18:07:22,558 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:07:22,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:22,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1682777854, now seen corresponding path program 1 times [2021-11-06 18:07:22,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:22,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308112422] [2021-11-06 18:07:22,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:22,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:22,802 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:07:22,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:22,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308112422] [2021-11-06 18:07:22,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308112422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:22,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:22,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:07:22,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611354105] [2021-11-06 18:07:22,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:07:22,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:22,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:07:22,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:07:22,806 INFO L87 Difference]: Start difference. First operand 17022 states and 22038 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 18:07:25,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:25,512 INFO L93 Difference]: Finished difference Result 35708 states and 46318 transitions. [2021-11-06 18:07:25,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:07:25,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 150 [2021-11-06 18:07:25,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:25,564 INFO L225 Difference]: With dead ends: 35708 [2021-11-06 18:07:25,564 INFO L226 Difference]: Without dead ends: 18738 [2021-11-06 18:07:25,598 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 18:07:25,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18738 states. [2021-11-06 18:07:26,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18738 to 18714. [2021-11-06 18:07:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18714 states, 18704 states have (on average 1.2999358426005132) internal successors, (24314), 18713 states have internal predecessors, (24314), 0 states have call successors, (0), 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 18:07:26,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18714 states to 18714 states and 24314 transitions. [2021-11-06 18:07:26,176 INFO L78 Accepts]: Start accepts. Automaton has 18714 states and 24314 transitions. Word has length 150 [2021-11-06 18:07:26,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:07:26,177 INFO L470 AbstractCegarLoop]: Abstraction has 18714 states and 24314 transitions. [2021-11-06 18:07:26,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 18:07:26,177 INFO L276 IsEmpty]: Start isEmpty. Operand 18714 states and 24314 transitions. [2021-11-06 18:07:26,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-06 18:07:26,180 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:26,180 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-06 18:07:26,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 18:07:26,181 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:07:26,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:26,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1737170752, now seen corresponding path program 1 times [2021-11-06 18:07:26,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:26,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711750436] [2021-11-06 18:07:26,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:26,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:07:26,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:26,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711750436] [2021-11-06 18:07:26,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711750436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:26,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:26,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:07:26,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320278026] [2021-11-06 18:07:26,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:07:26,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:26,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:07:26,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:07:26,413 INFO L87 Difference]: Start difference. First operand 18714 states and 24314 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 18:07:29,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:29,045 INFO L93 Difference]: Finished difference Result 39104 states and 50894 transitions. [2021-11-06 18:07:29,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:07:29,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 150 [2021-11-06 18:07:29,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:29,092 INFO L225 Difference]: With dead ends: 39104 [2021-11-06 18:07:29,092 INFO L226 Difference]: Without dead ends: 20442 [2021-11-06 18:07:29,125 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 18:07:29,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20442 states. [2021-11-06 18:07:29,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20442 to 20418. [2021-11-06 18:07:29,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20418 states, 20408 states have (on average 1.3035084280674245) internal successors, (26602), 20417 states have internal predecessors, (26602), 0 states have call successors, (0), 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 18:07:29,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20418 states to 20418 states and 26602 transitions. [2021-11-06 18:07:29,680 INFO L78 Accepts]: Start accepts. Automaton has 20418 states and 26602 transitions. Word has length 150 [2021-11-06 18:07:29,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:07:29,681 INFO L470 AbstractCegarLoop]: Abstraction has 20418 states and 26602 transitions. [2021-11-06 18:07:29,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 18:07:29,681 INFO L276 IsEmpty]: Start isEmpty. Operand 20418 states and 26602 transitions. [2021-11-06 18:07:29,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-06 18:07:29,685 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:29,685 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-06 18:07:29,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 18:07:29,686 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:07:29,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:29,687 INFO L85 PathProgramCache]: Analyzing trace with hash -624067939, now seen corresponding path program 1 times [2021-11-06 18:07:29,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:29,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954429981] [2021-11-06 18:07:29,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:29,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-06 18:07:29,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:29,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954429981] [2021-11-06 18:07:29,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954429981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:29,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:29,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:07:29,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525898506] [2021-11-06 18:07:29,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:07:29,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:29,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:07:29,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:07:29,951 INFO L87 Difference]: Start difference. First operand 20418 states and 26602 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 18:07:33,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:33,441 INFO L93 Difference]: Finished difference Result 62750 states and 81858 transitions. [2021-11-06 18:07:33,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:07:33,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 191 [2021-11-06 18:07:33,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:33,542 INFO L225 Difference]: With dead ends: 62750 [2021-11-06 18:07:33,542 INFO L226 Difference]: Without dead ends: 42384 [2021-11-06 18:07:33,591 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:07:33,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42384 states. [2021-11-06 18:07:34,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42384 to 22090. [2021-11-06 18:07:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22090 states, 22080 states have (on average 1.3069746376811595) internal successors, (28858), 22089 states have internal predecessors, (28858), 0 states have call successors, (0), 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 18:07:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22090 states to 22090 states and 28858 transitions. [2021-11-06 18:07:34,392 INFO L78 Accepts]: Start accepts. Automaton has 22090 states and 28858 transitions. Word has length 191 [2021-11-06 18:07:34,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:07:34,393 INFO L470 AbstractCegarLoop]: Abstraction has 22090 states and 28858 transitions. [2021-11-06 18:07:34,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 18:07:34,393 INFO L276 IsEmpty]: Start isEmpty. Operand 22090 states and 28858 transitions. [2021-11-06 18:07:34,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-06 18:07:34,397 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:34,398 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-06 18:07:34,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 18:07:34,398 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:07:34,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:34,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1101324440, now seen corresponding path program 1 times [2021-11-06 18:07:34,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:34,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716264363] [2021-11-06 18:07:34,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:34,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:34,653 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-06 18:07:34,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:34,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716264363] [2021-11-06 18:07:34,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716264363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:34,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:34,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:07:34,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428362948] [2021-11-06 18:07:34,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:07:34,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:34,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:07:34,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:07:34,655 INFO L87 Difference]: Start difference. First operand 22090 states and 28858 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 18:07:38,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:38,046 INFO L93 Difference]: Finished difference Result 66114 states and 86410 transitions. [2021-11-06 18:07:38,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:07:38,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 192 [2021-11-06 18:07:38,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:38,250 INFO L225 Difference]: With dead ends: 66114 [2021-11-06 18:07:38,250 INFO L226 Difference]: Without dead ends: 44076 [2021-11-06 18:07:38,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:07:38,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44076 states. [2021-11-06 18:07:38,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44076 to 23782. [2021-11-06 18:07:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23782 states, 23772 states have (on average 1.3096920747097425) internal successors, (31134), 23781 states have internal predecessors, (31134), 0 states have call successors, (0), 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 18:07:38,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23782 states to 23782 states and 31134 transitions. [2021-11-06 18:07:38,867 INFO L78 Accepts]: Start accepts. Automaton has 23782 states and 31134 transitions. Word has length 192 [2021-11-06 18:07:38,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:07:38,867 INFO L470 AbstractCegarLoop]: Abstraction has 23782 states and 31134 transitions. [2021-11-06 18:07:38,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 18:07:38,868 INFO L276 IsEmpty]: Start isEmpty. Operand 23782 states and 31134 transitions. [2021-11-06 18:07:38,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-06 18:07:38,871 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:38,872 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-06 18:07:38,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 18:07:38,872 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:07:38,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:38,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1781150462, now seen corresponding path program 1 times [2021-11-06 18:07:38,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:38,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446659917] [2021-11-06 18:07:38,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:38,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:39,268 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-06 18:07:39,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:39,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446659917] [2021-11-06 18:07:39,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446659917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:39,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:39,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:07:39,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832019078] [2021-11-06 18:07:39,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:07:39,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:39,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:07:39,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:07:39,269 INFO L87 Difference]: Start difference. First operand 23782 states and 31134 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 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 18:07:42,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:42,744 INFO L93 Difference]: Finished difference Result 69494 states and 90966 transitions. [2021-11-06 18:07:42,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:07:42,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 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 193 [2021-11-06 18:07:42,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:42,836 INFO L225 Difference]: With dead ends: 69494 [2021-11-06 18:07:42,837 INFO L226 Difference]: Without dead ends: 45764 [2021-11-06 18:07:42,885 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:07:42,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45764 states. [2021-11-06 18:07:43,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45764 to 25470. [2021-11-06 18:07:43,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25470 states, 25460 states have (on average 1.3120974076983503) internal successors, (33406), 25469 states have internal predecessors, (33406), 0 states have call successors, (0), 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 18:07:43,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25470 states to 25470 states and 33406 transitions. [2021-11-06 18:07:43,651 INFO L78 Accepts]: Start accepts. Automaton has 25470 states and 33406 transitions. Word has length 193 [2021-11-06 18:07:43,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:07:43,652 INFO L470 AbstractCegarLoop]: Abstraction has 25470 states and 33406 transitions. [2021-11-06 18:07:43,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 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 18:07:43,652 INFO L276 IsEmpty]: Start isEmpty. Operand 25470 states and 33406 transitions. [2021-11-06 18:07:43,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-06 18:07:43,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:43,660 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-11-06 18:07:43,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 18:07:43,660 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:07:43,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:43,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1539480625, now seen corresponding path program 1 times [2021-11-06 18:07:43,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:43,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727612777] [2021-11-06 18:07:43,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:43,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:43,878 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-06 18:07:43,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:43,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727612777] [2021-11-06 18:07:43,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727612777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:43,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:43,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:07:43,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392661592] [2021-11-06 18:07:43,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:07:43,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:43,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:07:43,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:07:43,881 INFO L87 Difference]: Start difference. First operand 25470 states and 33406 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 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) [2021-11-06 18:07:46,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:46,719 INFO L93 Difference]: Finished difference Result 52568 states and 69022 transitions. [2021-11-06 18:07:46,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:07:46,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 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 204 [2021-11-06 18:07:46,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:46,760 INFO L225 Difference]: With dead ends: 52568 [2021-11-06 18:07:46,760 INFO L226 Difference]: Without dead ends: 27150 [2021-11-06 18:07:46,794 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 18:07:46,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27150 states. [2021-11-06 18:07:47,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27150 to 27118. [2021-11-06 18:07:47,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27118 states, 27108 states have (on average 1.3146672568983326) internal successors, (35638), 27117 states have internal predecessors, (35638), 0 states have call successors, (0), 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 18:07:47,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27118 states to 27118 states and 35638 transitions. [2021-11-06 18:07:47,472 INFO L78 Accepts]: Start accepts. Automaton has 27118 states and 35638 transitions. Word has length 204 [2021-11-06 18:07:47,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:07:47,473 INFO L470 AbstractCegarLoop]: Abstraction has 27118 states and 35638 transitions. [2021-11-06 18:07:47,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 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) [2021-11-06 18:07:47,473 INFO L276 IsEmpty]: Start isEmpty. Operand 27118 states and 35638 transitions. [2021-11-06 18:07:47,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-06 18:07:47,478 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:47,478 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2021-11-06 18:07:47,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 18:07:47,479 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:07:47,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:47,479 INFO L85 PathProgramCache]: Analyzing trace with hash 796349788, now seen corresponding path program 1 times [2021-11-06 18:07:47,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:47,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617876483] [2021-11-06 18:07:47,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:47,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-06 18:07:47,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:47,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617876483] [2021-11-06 18:07:47,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617876483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:47,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:47,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:07:47,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168803431] [2021-11-06 18:07:47,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:07:47,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:47,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:07:47,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:07:47,706 INFO L87 Difference]: Start difference. First operand 27118 states and 35638 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 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) [2021-11-06 18:07:50,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:50,818 INFO L93 Difference]: Finished difference Result 55892 states and 73542 transitions. [2021-11-06 18:07:50,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:07:50,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 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 211 [2021-11-06 18:07:50,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:50,860 INFO L225 Difference]: With dead ends: 55892 [2021-11-06 18:07:50,861 INFO L226 Difference]: Without dead ends: 28826 [2021-11-06 18:07:50,899 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 18:07:50,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28826 states. [2021-11-06 18:07:51,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28826 to 28802. [2021-11-06 18:07:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28802 states, 28792 states have (on average 1.3165462628507918) internal successors, (37906), 28801 states have internal predecessors, (37906), 0 states have call successors, (0), 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 18:07:51,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28802 states to 28802 states and 37906 transitions. [2021-11-06 18:07:51,649 INFO L78 Accepts]: Start accepts. Automaton has 28802 states and 37906 transitions. Word has length 211 [2021-11-06 18:07:51,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:07:51,649 INFO L470 AbstractCegarLoop]: Abstraction has 28802 states and 37906 transitions. [2021-11-06 18:07:51,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 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) [2021-11-06 18:07:51,650 INFO L276 IsEmpty]: Start isEmpty. Operand 28802 states and 37906 transitions. [2021-11-06 18:07:51,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-06 18:07:51,653 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:51,653 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2021-11-06 18:07:51,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 18:07:51,653 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:07:51,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:51,654 INFO L85 PathProgramCache]: Analyzing trace with hash 74444505, now seen corresponding path program 1 times [2021-11-06 18:07:51,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:51,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544100229] [2021-11-06 18:07:51,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:51,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-06 18:07:51,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:51,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544100229] [2021-11-06 18:07:51,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544100229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:51,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:51,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:07:51,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190773403] [2021-11-06 18:07:51,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:07:51,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:51,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:07:51,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:07:51,865 INFO L87 Difference]: Start difference. First operand 28802 states and 37906 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 18:07:54,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:54,809 INFO L93 Difference]: Finished difference Result 59252 states and 78062 transitions. [2021-11-06 18:07:54,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:07:54,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 214 [2021-11-06 18:07:54,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:54,857 INFO L225 Difference]: With dead ends: 59252 [2021-11-06 18:07:54,857 INFO L226 Difference]: Without dead ends: 30502 [2021-11-06 18:07:54,892 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 18:07:54,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30502 states. [2021-11-06 18:07:55,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30502 to 30478. [2021-11-06 18:07:55,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30478 states, 30468 states have (on average 1.318301168439018) internal successors, (40166), 30477 states have internal predecessors, (40166), 0 states have call successors, (0), 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 18:07:55,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30478 states to 30478 states and 40166 transitions. [2021-11-06 18:07:55,659 INFO L78 Accepts]: Start accepts. Automaton has 30478 states and 40166 transitions. Word has length 214 [2021-11-06 18:07:55,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:07:55,659 INFO L470 AbstractCegarLoop]: Abstraction has 30478 states and 40166 transitions. [2021-11-06 18:07:55,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 18:07:55,660 INFO L276 IsEmpty]: Start isEmpty. Operand 30478 states and 40166 transitions. [2021-11-06 18:07:55,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-06 18:07:55,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:55,665 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 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] [2021-11-06 18:07:55,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 18:07:55,666 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:07:55,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:55,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1549187511, now seen corresponding path program 1 times [2021-11-06 18:07:55,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:55,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518363438] [2021-11-06 18:07:55,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:55,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:55,886 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-11-06 18:07:55,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:55,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518363438] [2021-11-06 18:07:55,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518363438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:55,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:55,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:07:55,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9613571] [2021-11-06 18:07:55,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:07:55,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:55,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:07:55,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:07:55,888 INFO L87 Difference]: Start difference. First operand 30478 states and 40166 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:07:59,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:59,128 INFO L93 Difference]: Finished difference Result 62600 states and 82574 transitions. [2021-11-06 18:07:59,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:07:59,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2021-11-06 18:07:59,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:59,184 INFO L225 Difference]: With dead ends: 62600 [2021-11-06 18:07:59,185 INFO L226 Difference]: Without dead ends: 32174 [2021-11-06 18:07:59,231 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 18:07:59,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32174 states. [2021-11-06 18:07:59,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32174 to 32150. [2021-11-06 18:08:00,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.3199128811449907) internal successors, (42422), 32149 states have internal predecessors, (42422), 0 states have call successors, (0), 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 18:08:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 42422 transitions. [2021-11-06 18:08:00,064 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 42422 transitions. Word has length 235 [2021-11-06 18:08:00,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:08:00,065 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 42422 transitions. [2021-11-06 18:08:00,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:08:00,065 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 42422 transitions. [2021-11-06 18:08:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-06 18:08:00,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:08:00,070 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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] [2021-11-06 18:08:00,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 18:08:00,070 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:08:00,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:08:00,071 INFO L85 PathProgramCache]: Analyzing trace with hash 623700801, now seen corresponding path program 1 times [2021-11-06 18:08:00,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:08:00,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721027255] [2021-11-06 18:08:00,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:08:00,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:08:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:08:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-06 18:08:00,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:08:00,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721027255] [2021-11-06 18:08:00,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721027255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:08:00,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:08:00,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:08:00,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832014421] [2021-11-06 18:08:00,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:08:00,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:08:00,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:08:00,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:08:00,416 INFO L87 Difference]: Start difference. First operand 32150 states and 42422 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:08:01,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:08:01,710 INFO L93 Difference]: Finished difference Result 64248 states and 84786 transitions. [2021-11-06 18:08:01,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:08:01,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2021-11-06 18:08:01,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:08:01,758 INFO L225 Difference]: With dead ends: 64248 [2021-11-06 18:08:01,758 INFO L226 Difference]: Without dead ends: 32150 [2021-11-06 18:08:01,787 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 18:08:01,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2021-11-06 18:08:02,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 32150. [2021-11-06 18:08:02,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.3159303049159925) internal successors, (42294), 32149 states have internal predecessors, (42294), 0 states have call successors, (0), 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 18:08:02,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 42294 transitions. [2021-11-06 18:08:02,659 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 42294 transitions. Word has length 236 [2021-11-06 18:08:02,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:08:02,659 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 42294 transitions. [2021-11-06 18:08:02,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:08:02,659 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 42294 transitions. [2021-11-06 18:08:02,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-06 18:08:02,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:08:02,664 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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] [2021-11-06 18:08:02,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 18:08:02,665 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:08:02,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:08:02,665 INFO L85 PathProgramCache]: Analyzing trace with hash -2140168060, now seen corresponding path program 1 times [2021-11-06 18:08:02,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:08:02,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045316900] [2021-11-06 18:08:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:08:02,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:08:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:08:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-06 18:08:02,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:08:02,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045316900] [2021-11-06 18:08:02,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045316900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:08:02,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:08:02,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:08:02,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097978945] [2021-11-06 18:08:02,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:08:02,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:08:02,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:08:02,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:08:02,985 INFO L87 Difference]: Start difference. First operand 32150 states and 42294 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 18:08:04,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:08:04,238 INFO L93 Difference]: Finished difference Result 64248 states and 84530 transitions. [2021-11-06 18:08:04,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:08:04,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 237 [2021-11-06 18:08:04,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:08:04,393 INFO L225 Difference]: With dead ends: 64248 [2021-11-06 18:08:04,393 INFO L226 Difference]: Without dead ends: 32150 [2021-11-06 18:08:04,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:08:04,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2021-11-06 18:08:05,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 32150. [2021-11-06 18:08:05,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.3119477286869945) internal successors, (42166), 32149 states have internal predecessors, (42166), 0 states have call successors, (0), 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 18:08:05,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 42166 transitions. [2021-11-06 18:08:05,269 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 42166 transitions. Word has length 237 [2021-11-06 18:08:05,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:08:05,270 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 42166 transitions. [2021-11-06 18:08:05,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 18:08:05,270 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 42166 transitions. [2021-11-06 18:08:05,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-06 18:08:05,273 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:08:05,273 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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] [2021-11-06 18:08:05,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 18:08:05,274 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:08:05,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:08:05,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1920607876, now seen corresponding path program 1 times [2021-11-06 18:08:05,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:08:05,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36190518] [2021-11-06 18:08:05,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:08:05,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:08:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:08:05,557 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-06 18:08:05,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:08:05,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36190518] [2021-11-06 18:08:05,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36190518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:08:05,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:08:05,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:08:05,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679655325] [2021-11-06 18:08:05,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:08:05,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:08:05,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:08:05,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:08:05,558 INFO L87 Difference]: Start difference. First operand 32150 states and 42166 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:08:07,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:08:07,008 INFO L93 Difference]: Finished difference Result 64248 states and 84274 transitions. [2021-11-06 18:08:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:08:07,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-11-06 18:08:07,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:08:07,057 INFO L225 Difference]: With dead ends: 64248 [2021-11-06 18:08:07,058 INFO L226 Difference]: Without dead ends: 32150 [2021-11-06 18:08:07,094 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:08:07,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2021-11-06 18:08:08,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 32150. [2021-11-06 18:08:08,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.3079651524579963) internal successors, (42038), 32149 states have internal predecessors, (42038), 0 states have call successors, (0), 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 18:08:08,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 42038 transitions. [2021-11-06 18:08:08,219 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 42038 transitions. Word has length 238 [2021-11-06 18:08:08,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:08:08,220 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 42038 transitions. [2021-11-06 18:08:08,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:08:08,220 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 42038 transitions. [2021-11-06 18:08:08,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-06 18:08:08,223 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:08:08,223 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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] [2021-11-06 18:08:08,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 18:08:08,224 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:08:08,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:08:08,224 INFO L85 PathProgramCache]: Analyzing trace with hash 590939487, now seen corresponding path program 1 times [2021-11-06 18:08:08,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:08:08,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581824432] [2021-11-06 18:08:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:08:08,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:08:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:08:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-06 18:08:08,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:08:08,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581824432] [2021-11-06 18:08:08,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581824432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:08:08,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:08:08,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:08:08,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36446019] [2021-11-06 18:08:08,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:08:08,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:08:08,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:08:08,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:08:08,494 INFO L87 Difference]: Start difference. First operand 32150 states and 42038 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 18:08:10,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:08:10,330 INFO L93 Difference]: Finished difference Result 64248 states and 84018 transitions. [2021-11-06 18:08:10,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:08:10,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 239 [2021-11-06 18:08:10,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:08:10,376 INFO L225 Difference]: With dead ends: 64248 [2021-11-06 18:08:10,376 INFO L226 Difference]: Without dead ends: 32150 [2021-11-06 18:08:10,411 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:08:10,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2021-11-06 18:08:11,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 32150. [2021-11-06 18:08:11,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.303982576228998) internal successors, (41910), 32149 states have internal predecessors, (41910), 0 states have call successors, (0), 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 18:08:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 41910 transitions. [2021-11-06 18:08:11,641 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 41910 transitions. Word has length 239 [2021-11-06 18:08:11,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:08:11,641 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 41910 transitions. [2021-11-06 18:08:11,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 18:08:11,642 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 41910 transitions. [2021-11-06 18:08:11,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-06 18:08:11,644 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:08:11,645 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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] [2021-11-06 18:08:11,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 18:08:11,645 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:08:11,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:08:11,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1139645367, now seen corresponding path program 1 times [2021-11-06 18:08:11,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:08:11,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332738174] [2021-11-06 18:08:11,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:08:11,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:08:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:08:11,912 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-06 18:08:11,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:08:11,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332738174] [2021-11-06 18:08:11,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332738174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:08:11,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:08:11,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:08:11,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327390227] [2021-11-06 18:08:11,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:08:11,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:08:11,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:08:11,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:08:11,914 INFO L87 Difference]: Start difference. First operand 32150 states and 41910 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 18:08:13,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:08:13,621 INFO L93 Difference]: Finished difference Result 64248 states and 83762 transitions. [2021-11-06 18:08:13,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:08:13,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 240 [2021-11-06 18:08:13,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:08:13,665 INFO L225 Difference]: With dead ends: 64248 [2021-11-06 18:08:13,665 INFO L226 Difference]: Without dead ends: 32150 [2021-11-06 18:08:13,697 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:08:13,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2021-11-06 18:08:14,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 32150. [2021-11-06 18:08:14,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 32140 states have (on average 1.3) internal successors, (41782), 32149 states have internal predecessors, (41782), 0 states have call successors, (0), 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 18:08:14,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 41782 transitions. [2021-11-06 18:08:14,945 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 41782 transitions. Word has length 240 [2021-11-06 18:08:14,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:08:14,946 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 41782 transitions. [2021-11-06 18:08:14,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 18:08:14,946 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 41782 transitions. [2021-11-06 18:08:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-06 18:08:14,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:08:14,949 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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] [2021-11-06 18:08:14,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 18:08:14,949 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 18:08:14,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:08:14,950 INFO L85 PathProgramCache]: Analyzing trace with hash 969807418, now seen corresponding path program 1 times [2021-11-06 18:08:14,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:08:14,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519588320] [2021-11-06 18:08:14,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:08:14,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:08:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:08:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-06 18:08:15,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:08:15,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519588320] [2021-11-06 18:08:15,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519588320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:08:15,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:08:15,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:08:15,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643608004] [2021-11-06 18:08:15,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:08:15,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:08:15,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:08:15,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:08:15,217 INFO L87 Difference]: Start difference. First operand 32150 states and 41782 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)