/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 17:27:10,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 17:27:10,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 17:27:10,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 17:27:10,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 17:27:10,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 17:27:10,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 17:27:10,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 17:27:10,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 17:27:10,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 17:27:10,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 17:27:10,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 17:27:10,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 17:27:10,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 17:27:10,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 17:27:10,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 17:27:10,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 17:27:10,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 17:27:10,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 17:27:10,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 17:27:10,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 17:27:10,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 17:27:10,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 17:27:10,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 17:27:10,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 17:27:10,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 17:27:10,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 17:27:10,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 17:27:10,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 17:27:10,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 17:27:10,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 17:27:10,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 17:27:10,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 17:27:10,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 17:27:10,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 17:27:10,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 17:27:10,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 17:27:10,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 17:27:10,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 17:27:10,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 17:27:10,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 17:27:10,250 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 17:27:10,304 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 17:27:10,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 17:27:10,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 17:27:10,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 17:27:10,309 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 17:27:10,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 17:27:10,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 17:27:10,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 17:27:10,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 17:27:10,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 17:27:10,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 17:27:10,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 17:27:10,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 17:27:10,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 17:27:10,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 17:27:10,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 17:27:10,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 17:27:10,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 17:27:10,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 17:27:10,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 17:27:10,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 17:27:10,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 17:27:10,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 17:27:10,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 17:27:10,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 17:27:10,314 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 17:27:10,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 17:27:10,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 17:27:10,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 17:27:10,786 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 17:27:10,787 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 17:27:10,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2020-12-22 17:27:10,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c33acee49/839abc705e7e4533a3187b3e7e76bab2/FLAG60c40a8ea [2020-12-22 17:27:11,998 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 17:27:11,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2020-12-22 17:27:12,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c33acee49/839abc705e7e4533a3187b3e7e76bab2/FLAG60c40a8ea [2020-12-22 17:27:12,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c33acee49/839abc705e7e4533a3187b3e7e76bab2 [2020-12-22 17:27:12,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 17:27:12,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 17:27:12,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 17:27:12,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 17:27:12,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 17:27:12,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:27:12" (1/1) ... [2020-12-22 17:27:12,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@299a5d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:12, skipping insertion in model container [2020-12-22 17:27:12,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:27:12" (1/1) ... [2020-12-22 17:27:12,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 17:27:12,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 17:27:15,621 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[325844,325857] [2020-12-22 17:27:15,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 17:27:15,742 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 17:27:16,297 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[325844,325857] [2020-12-22 17:27:16,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 17:27:17,614 INFO L208 MainTranslator]: Completed translation [2020-12-22 17:27:17,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:17 WrapperNode [2020-12-22 17:27:17,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 17:27:17,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 17:27:17,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 17:27:17,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 17:27:17,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:17" (1/1) ... [2020-12-22 17:27:17,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:17" (1/1) ... [2020-12-22 17:27:18,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 17:27:18,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 17:27:18,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 17:27:18,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 17:27:18,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:17" (1/1) ... [2020-12-22 17:27:18,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:17" (1/1) ... [2020-12-22 17:27:19,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:17" (1/1) ... [2020-12-22 17:27:19,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:17" (1/1) ... [2020-12-22 17:27:19,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:17" (1/1) ... [2020-12-22 17:27:20,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:17" (1/1) ... [2020-12-22 17:27:20,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:17" (1/1) ... [2020-12-22 17:27:20,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 17:27:20,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 17:27:20,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 17:27:20,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 17:27:20,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 17:27:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_open_9_6 [2020-12-22 17:27:20,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_open_9_6 [2020-12-22 17:27:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure macb_probe [2020-12-22 17:27:20,681 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_probe [2020-12-22 17:27:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 17:27:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 17:27:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 17:27:20,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 17:27:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure macb_open [2020-12-22 17:27:20,683 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_open [2020-12-22 17:27:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure macb_alloc_consistent [2020-12-22 17:27:20,683 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_alloc_consistent [2020-12-22 17:27:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 17:27:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2020-12-22 17:27:20,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2020-12-22 17:27:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 17:27:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-12-22 17:27:20,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-12-22 17:27:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 17:27:20,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 17:27:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 17:27:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 17:27:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_17 [2020-12-22 17:27:20,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_17 [2020-12-22 17:27:20,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 17:27:20,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 17:27:20,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 17:27:20,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 17:27:20,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 17:27:44,917 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L10337: #t~ret1466 := main_#res; [2020-12-22 17:27:44,919 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2020-12-22 17:27:44,919 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_entry_EMGentry_11_returnLabel: main_#res := 0; [2020-12-22 17:27:55,869 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 17:27:55,870 INFO L299 CfgBuilder]: Removed 6069 assume(true) statements. [2020-12-22 17:27:55,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:27:55 BoogieIcfgContainer [2020-12-22 17:27:55,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 17:27:55,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 17:27:55,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 17:27:55,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 17:27:55,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:27:12" (1/3) ... [2020-12-22 17:27:55,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596d91fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:27:55, skipping insertion in model container [2020-12-22 17:27:55,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:27:17" (2/3) ... [2020-12-22 17:27:55,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596d91fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:27:55, skipping insertion in model container [2020-12-22 17:27:55,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:27:55" (3/3) ... [2020-12-22 17:27:55,885 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2020-12-22 17:27:55,892 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 17:27:55,900 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-22 17:27:55,919 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-22 17:27:55,963 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 17:27:55,964 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 17:27:55,964 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 17:27:55,964 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 17:27:55,964 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 17:27:55,964 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 17:27:55,965 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 17:27:55,965 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 17:27:56,044 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states. [2020-12-22 17:27:56,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 17:27:56,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:27:56,050 INFO L422 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] [2020-12-22 17:27:56,050 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:27:56,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:27:56,057 INFO L82 PathProgramCache]: Analyzing trace with hash -378521565, now seen corresponding path program 1 times [2020-12-22 17:27:56,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:27:56,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801185970] [2020-12-22 17:27:56,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:27:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:27:56,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 17:27:56,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801185970] [2020-12-22 17:27:56,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:27:56,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:27:56,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568442156] [2020-12-22 17:27:56,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 17:27:56,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:27:56,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 17:27:56,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 17:27:56,914 INFO L87 Difference]: Start difference. First operand 5157 states. Second operand 4 states. [2020-12-22 17:27:57,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:27:57,493 INFO L93 Difference]: Finished difference Result 10280 states and 13473 transitions. [2020-12-22 17:27:57,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 17:27:57,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-12-22 17:27:57,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:27:57,565 INFO L225 Difference]: With dead ends: 10280 [2020-12-22 17:27:57,565 INFO L226 Difference]: Without dead ends: 5047 [2020-12-22 17:27:57,649 INFO L677 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 [2020-12-22 17:27:57,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5047 states. [2020-12-22 17:27:57,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5047 to 5047. [2020-12-22 17:27:57,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5047 states. [2020-12-22 17:27:58,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5047 states to 5047 states and 6446 transitions. [2020-12-22 17:27:58,028 INFO L78 Accepts]: Start accepts. Automaton has 5047 states and 6446 transitions. Word has length 22 [2020-12-22 17:27:58,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:27:58,030 INFO L481 AbstractCegarLoop]: Abstraction has 5047 states and 6446 transitions. [2020-12-22 17:27:58,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 17:27:58,031 INFO L276 IsEmpty]: Start isEmpty. Operand 5047 states and 6446 transitions. [2020-12-22 17:27:58,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 17:27:58,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:27:58,033 INFO L422 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] [2020-12-22 17:27:58,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 17:27:58,034 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:27:58,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:27:58,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1313457478, now seen corresponding path program 1 times [2020-12-22 17:27:58,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:27:58,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362025673] [2020-12-22 17:27:58,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:27:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:27:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 17:27:58,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362025673] [2020-12-22 17:27:58,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:27:58,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:27:58,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758934172] [2020-12-22 17:27:58,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 17:27:58,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:27:58,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 17:27:58,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 17:27:58,533 INFO L87 Difference]: Start difference. First operand 5047 states and 6446 transitions. Second operand 4 states. [2020-12-22 17:27:59,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:27:59,294 INFO L93 Difference]: Finished difference Result 10030 states and 12855 transitions. [2020-12-22 17:27:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 17:27:59,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-12-22 17:27:59,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:27:59,403 INFO L225 Difference]: With dead ends: 10030 [2020-12-22 17:27:59,403 INFO L226 Difference]: Without dead ends: 10026 [2020-12-22 17:27:59,413 INFO L677 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 [2020-12-22 17:27:59,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10026 states. [2020-12-22 17:27:59,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10026 to 8352. [2020-12-22 17:27:59,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8352 states. [2020-12-22 17:27:59,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8352 states to 8352 states and 10719 transitions. [2020-12-22 17:27:59,894 INFO L78 Accepts]: Start accepts. Automaton has 8352 states and 10719 transitions. Word has length 24 [2020-12-22 17:27:59,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:27:59,896 INFO L481 AbstractCegarLoop]: Abstraction has 8352 states and 10719 transitions. [2020-12-22 17:27:59,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 17:27:59,897 INFO L276 IsEmpty]: Start isEmpty. Operand 8352 states and 10719 transitions. [2020-12-22 17:27:59,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 17:27:59,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:27:59,900 INFO L422 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] [2020-12-22 17:27:59,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 17:27:59,905 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:27:59,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:27:59,907 INFO L82 PathProgramCache]: Analyzing trace with hash -487287063, now seen corresponding path program 1 times [2020-12-22 17:27:59,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:27:59,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855014652] [2020-12-22 17:27:59,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:28:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:28:00,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 17:28:00,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855014652] [2020-12-22 17:28:00,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:28:00,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:28:00,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304125022] [2020-12-22 17:28:00,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 17:28:00,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:28:00,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 17:28:00,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 17:28:00,245 INFO L87 Difference]: Start difference. First operand 8352 states and 10719 transitions. Second operand 4 states. [2020-12-22 17:28:01,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:28:01,170 INFO L93 Difference]: Finished difference Result 16645 states and 21482 transitions. [2020-12-22 17:28:01,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 17:28:01,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-12-22 17:28:01,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:28:01,321 INFO L225 Difference]: With dead ends: 16645 [2020-12-22 17:28:01,321 INFO L226 Difference]: Without dead ends: 16641 [2020-12-22 17:28:01,346 INFO L677 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 [2020-12-22 17:28:01,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16641 states. [2020-12-22 17:28:01,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16641 to 14962. [2020-12-22 17:28:01,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14962 states. [2020-12-22 17:28:02,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14962 states to 14962 states and 19343 transitions. [2020-12-22 17:28:02,077 INFO L78 Accepts]: Start accepts. Automaton has 14962 states and 19343 transitions. Word has length 26 [2020-12-22 17:28:02,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:28:02,078 INFO L481 AbstractCegarLoop]: Abstraction has 14962 states and 19343 transitions. [2020-12-22 17:28:02,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 17:28:02,078 INFO L276 IsEmpty]: Start isEmpty. Operand 14962 states and 19343 transitions. [2020-12-22 17:28:02,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 17:28:02,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:28:02,080 INFO L422 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] [2020-12-22 17:28:02,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 17:28:02,080 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:28:02,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:28:02,081 INFO L82 PathProgramCache]: Analyzing trace with hash -130970356, now seen corresponding path program 1 times [2020-12-22 17:28:02,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:28:02,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359503520] [2020-12-22 17:28:02,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:28:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:28:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 17:28:02,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359503520] [2020-12-22 17:28:02,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:28:02,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 17:28:02,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760907] [2020-12-22 17:28:02,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 17:28:02,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:28:02,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 17:28:02,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 17:28:02,460 INFO L87 Difference]: Start difference. First operand 14962 states and 19343 transitions. Second operand 4 states. [2020-12-22 17:28:03,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:28:03,695 INFO L93 Difference]: Finished difference Result 29893 states and 39025 transitions. [2020-12-22 17:28:03,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 17:28:03,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-12-22 17:28:03,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:28:03,887 INFO L225 Difference]: With dead ends: 29893 [2020-12-22 17:28:03,888 INFO L226 Difference]: Without dead ends: 29856 [2020-12-22 17:28:03,934 INFO L677 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 [2020-12-22 17:28:03,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29856 states. [2020-12-22 17:28:05,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29856 to 29848. [2020-12-22 17:28:05,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29848 states. [2020-12-22 17:28:05,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29848 states to 29848 states and 38979 transitions. [2020-12-22 17:28:05,345 INFO L78 Accepts]: Start accepts. Automaton has 29848 states and 38979 transitions. Word has length 28 [2020-12-22 17:28:05,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:28:05,345 INFO L481 AbstractCegarLoop]: Abstraction has 29848 states and 38979 transitions. [2020-12-22 17:28:05,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 17:28:05,346 INFO L276 IsEmpty]: Start isEmpty. Operand 29848 states and 38979 transitions. [2020-12-22 17:28:05,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 17:28:05,388 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:28:05,388 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 17:28:05,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 17:28:05,389 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:28:05,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:28:05,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1411005469, now seen corresponding path program 1 times [2020-12-22 17:28:05,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:28:05,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190927324] [2020-12-22 17:28:05,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:28:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:28:05,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-12-22 17:28:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:28:06,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 17:28:06,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190927324] [2020-12-22 17:28:06,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:28:06,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 17:28:06,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734643643] [2020-12-22 17:28:06,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 17:28:06,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:28:06,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 17:28:06,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 17:28:06,047 INFO L87 Difference]: Start difference. First operand 29848 states and 38979 transitions. Second operand 7 states. [2020-12-22 17:28:24,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:28:24,806 INFO L93 Difference]: Finished difference Result 65350 states and 86161 transitions. [2020-12-22 17:28:24,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 17:28:24,807 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-12-22 17:28:24,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:28:25,125 INFO L225 Difference]: With dead ends: 65350 [2020-12-22 17:28:25,126 INFO L226 Difference]: Without dead ends: 35524 [2020-12-22 17:28:25,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-22 17:28:25,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35524 states. [2020-12-22 17:28:27,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35524 to 31596. [2020-12-22 17:28:27,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31596 states. [2020-12-22 17:28:27,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31596 states to 31596 states and 41326 transitions. [2020-12-22 17:28:27,450 INFO L78 Accepts]: Start accepts. Automaton has 31596 states and 41326 transitions. Word has length 121 [2020-12-22 17:28:27,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:28:27,451 INFO L481 AbstractCegarLoop]: Abstraction has 31596 states and 41326 transitions. [2020-12-22 17:28:27,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 17:28:27,451 INFO L276 IsEmpty]: Start isEmpty. Operand 31596 states and 41326 transitions. [2020-12-22 17:28:27,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 17:28:27,503 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:28:27,504 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 17:28:27,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 17:28:27,504 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:28:27,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:28:27,505 INFO L82 PathProgramCache]: Analyzing trace with hash 399921869, now seen corresponding path program 1 times [2020-12-22 17:28:27,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:28:27,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434732758] [2020-12-22 17:28:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:28:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:28:28,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-12-22 17:28:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:28:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 17:28:28,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434732758] [2020-12-22 17:28:28,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:28:28,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 17:28:28,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43142267] [2020-12-22 17:28:28,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 17:28:28,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:28:28,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 17:28:28,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 17:28:28,265 INFO L87 Difference]: Start difference. First operand 31596 states and 41326 transitions. Second operand 6 states. [2020-12-22 17:28:48,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:28:48,958 INFO L93 Difference]: Finished difference Result 67802 states and 89684 transitions. [2020-12-22 17:28:48,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 17:28:48,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2020-12-22 17:28:48,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:28:49,200 INFO L225 Difference]: With dead ends: 67802 [2020-12-22 17:28:49,201 INFO L226 Difference]: Without dead ends: 36228 [2020-12-22 17:28:49,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-22 17:28:49,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36228 states. [2020-12-22 17:28:51,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36228 to 31632. [2020-12-22 17:28:51,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31632 states. [2020-12-22 17:28:51,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31632 states to 31632 states and 41366 transitions. [2020-12-22 17:28:51,495 INFO L78 Accepts]: Start accepts. Automaton has 31632 states and 41366 transitions. Word has length 127 [2020-12-22 17:28:51,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:28:51,495 INFO L481 AbstractCegarLoop]: Abstraction has 31632 states and 41366 transitions. [2020-12-22 17:28:51,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 17:28:51,495 INFO L276 IsEmpty]: Start isEmpty. Operand 31632 states and 41366 transitions. [2020-12-22 17:28:51,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 17:28:51,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:28:51,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 17:28:51,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 17:28:51,550 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:28:51,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:28:51,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1232514552, now seen corresponding path program 1 times [2020-12-22 17:28:51,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:28:51,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738880609] [2020-12-22 17:28:51,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:28:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:28:52,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-12-22 17:28:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:28:52,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 17:28:52,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738880609] [2020-12-22 17:28:52,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:28:52,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 17:28:52,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035439493] [2020-12-22 17:28:52,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 17:28:52,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:28:52,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 17:28:52,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 17:28:52,449 INFO L87 Difference]: Start difference. First operand 31632 states and 41366 transitions. Second operand 6 states. [2020-12-22 17:29:15,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:29:15,383 INFO L93 Difference]: Finished difference Result 64491 states and 85262 transitions. [2020-12-22 17:29:15,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 17:29:15,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-12-22 17:29:15,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:29:15,844 INFO L225 Difference]: With dead ends: 64491 [2020-12-22 17:29:15,844 INFO L226 Difference]: Without dead ends: 32881 [2020-12-22 17:29:16,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-22 17:29:16,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32881 states. [2020-12-22 17:29:17,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32881 to 31656. [2020-12-22 17:29:17,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31656 states. [2020-12-22 17:29:17,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31656 states to 31656 states and 41390 transitions. [2020-12-22 17:29:17,638 INFO L78 Accepts]: Start accepts. Automaton has 31656 states and 41390 transitions. Word has length 132 [2020-12-22 17:29:17,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:29:17,639 INFO L481 AbstractCegarLoop]: Abstraction has 31656 states and 41390 transitions. [2020-12-22 17:29:17,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 17:29:17,639 INFO L276 IsEmpty]: Start isEmpty. Operand 31656 states and 41390 transitions. [2020-12-22 17:29:17,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 17:29:17,788 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:29:17,788 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 17:29:17,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 17:29:17,789 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:29:17,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:29:17,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1733952768, now seen corresponding path program 1 times [2020-12-22 17:29:17,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:29:17,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720658136] [2020-12-22 17:29:17,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:29:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:29:18,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-12-22 17:29:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:29:18,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-12-22 17:29:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:29:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 17:29:18,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720658136] [2020-12-22 17:29:18,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:29:18,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 17:29:18,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532753561] [2020-12-22 17:29:18,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 17:29:18,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:29:18,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 17:29:18,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 17:29:18,192 INFO L87 Difference]: Start difference. First operand 31656 states and 41390 transitions. Second operand 4 states. [2020-12-22 17:29:37,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:29:37,105 INFO L93 Difference]: Finished difference Result 64509 states and 85252 transitions. [2020-12-22 17:29:37,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 17:29:37,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-12-22 17:29:37,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:29:37,322 INFO L225 Difference]: With dead ends: 64509 [2020-12-22 17:29:37,323 INFO L226 Difference]: Without dead ends: 32875 [2020-12-22 17:29:38,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 17:29:38,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32875 states. [2020-12-22 17:29:39,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32875 to 31674. [2020-12-22 17:29:39,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31674 states. [2020-12-22 17:29:40,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31674 states to 31674 states and 41408 transitions. [2020-12-22 17:29:40,210 INFO L78 Accepts]: Start accepts. Automaton has 31674 states and 41408 transitions. Word has length 134 [2020-12-22 17:29:40,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:29:40,212 INFO L481 AbstractCegarLoop]: Abstraction has 31674 states and 41408 transitions. [2020-12-22 17:29:40,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 17:29:40,212 INFO L276 IsEmpty]: Start isEmpty. Operand 31674 states and 41408 transitions. [2020-12-22 17:29:40,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 17:29:40,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:29:40,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 17:29:40,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 17:29:40,276 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:29:40,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:29:40,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1344860802, now seen corresponding path program 1 times [2020-12-22 17:29:40,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:29:40,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465669785] [2020-12-22 17:29:40,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:29:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:29:42,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-12-22 17:29:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:29:42,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-12-22 17:29:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:29:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 17:29:42,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465669785] [2020-12-22 17:29:42,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:29:42,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 17:29:42,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196282274] [2020-12-22 17:29:42,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 17:29:42,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:29:42,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 17:29:42,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-12-22 17:29:42,887 INFO L87 Difference]: Start difference. First operand 31674 states and 41408 transitions. Second operand 12 states. [2020-12-22 17:30:07,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:30:07,487 INFO L93 Difference]: Finished difference Result 65182 states and 85207 transitions. [2020-12-22 17:30:07,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 17:30:07,489 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-12-22 17:30:07,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:30:07,846 INFO L225 Difference]: With dead ends: 65182 [2020-12-22 17:30:07,847 INFO L226 Difference]: Without dead ends: 33522 [2020-12-22 17:30:08,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2020-12-22 17:30:08,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33522 states. [2020-12-22 17:30:09,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33522 to 31777. [2020-12-22 17:30:09,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31777 states. [2020-12-22 17:30:09,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31777 states to 31777 states and 41547 transitions. [2020-12-22 17:30:09,451 INFO L78 Accepts]: Start accepts. Automaton has 31777 states and 41547 transitions. Word has length 134 [2020-12-22 17:30:09,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:30:09,452 INFO L481 AbstractCegarLoop]: Abstraction has 31777 states and 41547 transitions. [2020-12-22 17:30:09,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 17:30:09,452 INFO L276 IsEmpty]: Start isEmpty. Operand 31777 states and 41547 transitions. [2020-12-22 17:30:09,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 17:30:09,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:30:09,456 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 17:30:09,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 17:30:09,456 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:30:09,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:30:09,457 INFO L82 PathProgramCache]: Analyzing trace with hash 2033730356, now seen corresponding path program 1 times [2020-12-22 17:30:09,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:30:09,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821953292] [2020-12-22 17:30:09,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:30:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:30:10,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-12-22 17:30:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:30:10,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 17:30:10,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821953292] [2020-12-22 17:30:10,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:30:10,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 17:30:10,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288932937] [2020-12-22 17:30:10,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 17:30:10,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:30:10,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 17:30:10,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 17:30:10,429 INFO L87 Difference]: Start difference. First operand 31777 states and 41547 transitions. Second operand 8 states. [2020-12-22 17:30:37,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 17:30:37,898 INFO L93 Difference]: Finished difference Result 82943 states and 109725 transitions. [2020-12-22 17:30:37,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 17:30:37,900 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2020-12-22 17:30:37,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 17:30:38,181 INFO L225 Difference]: With dead ends: 82943 [2020-12-22 17:30:38,181 INFO L226 Difference]: Without dead ends: 51188 [2020-12-22 17:30:38,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-12-22 17:30:38,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51188 states. [2020-12-22 17:30:40,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51188 to 31817. [2020-12-22 17:30:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31817 states. [2020-12-22 17:30:40,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31817 states to 31817 states and 41587 transitions. [2020-12-22 17:30:40,272 INFO L78 Accepts]: Start accepts. Automaton has 31817 states and 41587 transitions. Word has length 138 [2020-12-22 17:30:40,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 17:30:40,272 INFO L481 AbstractCegarLoop]: Abstraction has 31817 states and 41587 transitions. [2020-12-22 17:30:40,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 17:30:40,273 INFO L276 IsEmpty]: Start isEmpty. Operand 31817 states and 41587 transitions. [2020-12-22 17:30:40,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 17:30:40,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 17:30:40,276 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 17:30:40,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 17:30:40,276 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 17:30:40,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 17:30:40,277 INFO L82 PathProgramCache]: Analyzing trace with hash 648602451, now seen corresponding path program 1 times [2020-12-22 17:30:40,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 17:30:40,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689279911] [2020-12-22 17:30:40,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 17:30:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:30:40,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-12-22 17:30:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 17:30:42,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 17:30:42,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689279911] [2020-12-22 17:30:42,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 17:30:42,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 17:30:42,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500361358] [2020-12-22 17:30:42,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 17:30:42,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 17:30:42,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 17:30:42,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-12-22 17:30:42,036 INFO L87 Difference]: Start difference. First operand 31817 states and 41587 transitions. Second operand 14 states.