/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_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 16:49:53,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 16:49:53,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 16:49:53,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 16:49:53,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 16:49:53,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 16:49:53,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 16:49:53,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 16:49:53,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 16:49:53,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 16:49:53,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 16:49:53,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 16:49:53,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 16:49:53,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 16:49:53,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 16:49:53,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 16:49:53,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 16:49:53,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 16:49:53,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 16:49:53,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 16:49:53,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 16:49:53,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 16:49:53,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 16:49:53,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 16:49:53,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 16:49:53,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 16:49:53,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 16:49:53,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 16:49:53,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 16:49:53,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 16:49:53,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 16:49:53,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 16:49:53,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 16:49:53,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 16:49:53,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 16:49:53,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 16:49:53,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 16:49:53,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 16:49:53,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 16:49:53,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 16:49:53,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 16:49:53,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 16:49:53,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 16:49:53,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 16:49:53,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 16:49:53,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 16:49:53,759 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 16:49:53,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 16:49:53,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 16:49:53,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 16:49:53,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 16:49:53,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 16:49:53,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 16:49:53,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 16:49:53,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 16:49:53,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 16:49:53,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 16:49:53,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 16:49:53,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 16:49:53,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 16:49:53,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 16:49:53,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 16:49:53,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 16:49:53,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 16:49:53,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 16:49:53,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 16:49:53,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 16:49:53,764 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 16:49:54,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 16:49:54,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 16:49:54,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 16:49:54,209 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 16:49:54,209 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 16:49:54,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2020-12-22 16:49:54,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8487c844/50c939b50d2c4bb8b42c45bbb2b07364/FLAG3dac2b13f [2020-12-22 16:49:55,478 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 16:49:55,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2020-12-22 16:49:55,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8487c844/50c939b50d2c4bb8b42c45bbb2b07364/FLAG3dac2b13f [2020-12-22 16:49:55,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8487c844/50c939b50d2c4bb8b42c45bbb2b07364 [2020-12-22 16:49:55,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 16:49:55,744 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 16:49:55,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 16:49:55,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 16:49:55,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 16:49:55,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:49:55" (1/1) ... [2020-12-22 16:49:55,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1920eb69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:49:55, skipping insertion in model container [2020-12-22 16:49:55,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:49:55" (1/1) ... [2020-12-22 16:49:55,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 16:49:55,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 16:50:00,344 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_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422956,422969] [2020-12-22 16:50:00,349 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_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[423101,423114] [2020-12-22 16:50:00,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 16:50:00,462 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 16:50:00,987 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_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422956,422969] [2020-12-22 16:50:00,988 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_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[423101,423114] [2020-12-22 16:50:00,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 16:50:02,378 INFO L208 MainTranslator]: Completed translation [2020-12-22 16:50:02,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:02 WrapperNode [2020-12-22 16:50:02,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 16:50:02,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 16:50:02,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 16:50:02,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 16:50:02,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:02" (1/1) ... [2020-12-22 16:50:02,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:02" (1/1) ... [2020-12-22 16:50:05,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 16:50:05,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 16:50:05,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 16:50:05,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 16:50:05,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:02" (1/1) ... [2020-12-22 16:50:05,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:02" (1/1) ... [2020-12-22 16:50:06,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:02" (1/1) ... [2020-12-22 16:50:06,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:02" (1/1) ... [2020-12-22 16:50:08,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:02" (1/1) ... [2020-12-22 16:50:08,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:02" (1/1) ... [2020-12-22 16:50:08,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:02" (1/1) ... [2020-12-22 16:50:08,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 16:50:08,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 16:50:08,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 16:50:08,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 16:50:08,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:02" (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 16:50:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 16:50:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 16:50:09,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 16:50:09,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 16:50:09,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 16:50:09,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 16:50:09,045 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 16:50:09,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 16:50:09,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 16:50:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 16:50:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 16:50:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2020-12-22 16:50:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 16:50:09,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 16:50:09,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 16:50:09,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 16:50:09,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 16:51:22,231 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2020-12-22 16:51:22,232 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2020-12-22 16:51:22,232 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2020-12-22 16:51:22,232 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2020-12-22 16:51:22,232 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2020-12-22 16:51:22,233 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#5: ldv_switch_2_#res := 0; [2020-12-22 16:51:22,233 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#6: ldv_switch_2_#res := 0; [2020-12-22 16:51:22,233 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#7: ldv_switch_2_#res := 0; [2020-12-22 16:51:22,233 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#8: ldv_switch_2_#res := 0; [2020-12-22 16:51:22,234 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2020-12-22 16:51:22,235 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2020-12-22 16:51:22,235 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2020-12-22 16:51:22,236 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2020-12-22 16:51:22,240 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2020-12-22 16:51:22,356 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2020-12-22 16:51:22,357 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2020-12-22 16:51:22,436 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 16:51:22,436 INFO L299 CfgBuilder]: Removed 18514 assume(true) statements. [2020-12-22 16:51:22,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:51:22 BoogieIcfgContainer [2020-12-22 16:51:22,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 16:51:22,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 16:51:22,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 16:51:22,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 16:51:22,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:49:55" (1/3) ... [2020-12-22 16:51:22,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71423503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:51:22, skipping insertion in model container [2020-12-22 16:51:22,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:02" (2/3) ... [2020-12-22 16:51:22,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71423503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:51:22, skipping insertion in model container [2020-12-22 16:51:22,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:51:22" (3/3) ... [2020-12-22 16:51:22,464 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2020-12-22 16:51:22,474 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 16:51:22,486 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 26 error locations. [2020-12-22 16:51:22,511 INFO L253 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2020-12-22 16:51:22,606 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 16:51:22,606 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 16:51:22,606 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 16:51:22,607 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 16:51:22,607 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 16:51:22,607 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 16:51:22,607 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 16:51:22,607 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 16:51:22,776 INFO L276 IsEmpty]: Start isEmpty. Operand 12060 states. [2020-12-22 16:51:22,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 16:51:22,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:51:22,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:22,816 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:51:22,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:51:22,824 INFO L82 PathProgramCache]: Analyzing trace with hash -918786885, now seen corresponding path program 1 times [2020-12-22 16:51:22,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:51:22,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025740266] [2020-12-22 16:51:22,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:51:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:51:24,022 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 16:51:24,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025740266] [2020-12-22 16:51:24,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:51:24,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:51:24,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117699107] [2020-12-22 16:51:24,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:51:24,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:51:24,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:51:24,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:51:24,052 INFO L87 Difference]: Start difference. First operand 12060 states. Second operand 3 states. [2020-12-22 16:51:27,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:51:27,241 INFO L93 Difference]: Finished difference Result 29606 states and 39168 transitions. [2020-12-22 16:51:27,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:51:27,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-22 16:51:27,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:51:27,378 INFO L225 Difference]: With dead ends: 29606 [2020-12-22 16:51:27,379 INFO L226 Difference]: Without dead ends: 16193 [2020-12-22 16:51:27,421 INFO L677 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 [2020-12-22 16:51:27,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16193 states. [2020-12-22 16:51:28,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16193 to 16157. [2020-12-22 16:51:28,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16157 states. [2020-12-22 16:51:28,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16157 states to 16157 states and 21022 transitions. [2020-12-22 16:51:28,475 INFO L78 Accepts]: Start accepts. Automaton has 16157 states and 21022 transitions. Word has length 89 [2020-12-22 16:51:28,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:51:28,477 INFO L481 AbstractCegarLoop]: Abstraction has 16157 states and 21022 transitions. [2020-12-22 16:51:28,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:51:28,478 INFO L276 IsEmpty]: Start isEmpty. Operand 16157 states and 21022 transitions. [2020-12-22 16:51:28,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 16:51:28,488 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:51:28,489 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:28,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 16:51:28,490 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:51:28,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:51:28,493 INFO L82 PathProgramCache]: Analyzing trace with hash -37629154, now seen corresponding path program 1 times [2020-12-22 16:51:28,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:51:28,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521565229] [2020-12-22 16:51:28,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:51:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:51:28,981 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 16:51:28,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521565229] [2020-12-22 16:51:28,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:51:28,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:51:28,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028301051] [2020-12-22 16:51:28,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:51:28,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:51:28,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:51:28,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:51:28,986 INFO L87 Difference]: Start difference. First operand 16157 states and 21022 transitions. Second operand 3 states. [2020-12-22 16:51:32,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:51:32,262 INFO L93 Difference]: Finished difference Result 42539 states and 55417 transitions. [2020-12-22 16:51:32,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:51:32,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-12-22 16:51:32,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:51:32,387 INFO L225 Difference]: With dead ends: 42539 [2020-12-22 16:51:32,387 INFO L226 Difference]: Without dead ends: 26490 [2020-12-22 16:51:32,416 INFO L677 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 [2020-12-22 16:51:32,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26490 states. [2020-12-22 16:51:33,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26490 to 26148. [2020-12-22 16:51:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26148 states. [2020-12-22 16:51:33,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26148 states to 26148 states and 34123 transitions. [2020-12-22 16:51:33,260 INFO L78 Accepts]: Start accepts. Automaton has 26148 states and 34123 transitions. Word has length 101 [2020-12-22 16:51:33,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:51:33,262 INFO L481 AbstractCegarLoop]: Abstraction has 26148 states and 34123 transitions. [2020-12-22 16:51:33,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:51:33,264 INFO L276 IsEmpty]: Start isEmpty. Operand 26148 states and 34123 transitions. [2020-12-22 16:51:33,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 16:51:33,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:51:33,284 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] [2020-12-22 16:51:33,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 16:51:33,289 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:51:33,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:51:33,292 INFO L82 PathProgramCache]: Analyzing trace with hash 436110901, now seen corresponding path program 1 times [2020-12-22 16:51:33,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:51:33,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055909205] [2020-12-22 16:51:33,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:51:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:51:33,964 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 16:51:33,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055909205] [2020-12-22 16:51:33,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:51:33,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 16:51:33,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213605945] [2020-12-22 16:51:33,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:51:33,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:51:33,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:51:33,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:51:33,972 INFO L87 Difference]: Start difference. First operand 26148 states and 34123 transitions. Second operand 3 states. [2020-12-22 16:51:40,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:51:40,379 INFO L93 Difference]: Finished difference Result 78078 states and 101941 transitions. [2020-12-22 16:51:40,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:51:40,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-12-22 16:51:40,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:51:40,515 INFO L225 Difference]: With dead ends: 78078 [2020-12-22 16:51:40,516 INFO L226 Difference]: Without dead ends: 52038 [2020-12-22 16:51:40,558 INFO L677 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 [2020-12-22 16:51:40,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52038 states. [2020-12-22 16:51:42,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52038 to 51914. [2020-12-22 16:51:42,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51914 states. [2020-12-22 16:51:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51914 states to 51914 states and 67825 transitions. [2020-12-22 16:51:42,122 INFO L78 Accepts]: Start accepts. Automaton has 51914 states and 67825 transitions. Word has length 130 [2020-12-22 16:51:42,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:51:42,123 INFO L481 AbstractCegarLoop]: Abstraction has 51914 states and 67825 transitions. [2020-12-22 16:51:42,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:51:42,123 INFO L276 IsEmpty]: Start isEmpty. Operand 51914 states and 67825 transitions. [2020-12-22 16:51:42,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 16:51:42,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:51:42,132 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] [2020-12-22 16:51:42,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 16:51:42,132 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:51:42,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:51:42,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1697028151, now seen corresponding path program 1 times [2020-12-22 16:51:42,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:51:42,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492915099] [2020-12-22 16:51:42,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:51:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:51:42,750 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 16:51:42,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492915099] [2020-12-22 16:51:42,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:51:42,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:51:42,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516565639] [2020-12-22 16:51:42,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:51:42,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:51:42,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:51:42,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:51:42,755 INFO L87 Difference]: Start difference. First operand 51914 states and 67825 transitions. Second operand 3 states. [2020-12-22 16:51:46,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:51:46,807 INFO L93 Difference]: Finished difference Result 118050 states and 154375 transitions. [2020-12-22 16:51:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:51:46,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-12-22 16:51:46,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:51:47,000 INFO L225 Difference]: With dead ends: 118050 [2020-12-22 16:51:47,000 INFO L226 Difference]: Without dead ends: 66244 [2020-12-22 16:51:47,126 INFO L677 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 [2020-12-22 16:51:47,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66244 states. [2020-12-22 16:51:48,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66244 to 66196. [2020-12-22 16:51:48,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66196 states. [2020-12-22 16:51:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66196 states to 66196 states and 86579 transitions. [2020-12-22 16:51:49,001 INFO L78 Accepts]: Start accepts. Automaton has 66196 states and 86579 transitions. Word has length 130 [2020-12-22 16:51:49,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:51:49,002 INFO L481 AbstractCegarLoop]: Abstraction has 66196 states and 86579 transitions. [2020-12-22 16:51:49,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:51:49,002 INFO L276 IsEmpty]: Start isEmpty. Operand 66196 states and 86579 transitions. [2020-12-22 16:51:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 16:51:49,018 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:51:49,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 16:51:49,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 16:51:49,019 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:51:49,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:51:49,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1318979706, now seen corresponding path program 1 times [2020-12-22 16:51:49,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:51:49,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210947269] [2020-12-22 16:51:49,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:51:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:51:49,765 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 16:51:49,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210947269] [2020-12-22 16:51:49,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:51:49,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:51:49,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589287544] [2020-12-22 16:51:49,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:51:49,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:51:49,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:51:49,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:51:49,769 INFO L87 Difference]: Start difference. First operand 66196 states and 86579 transitions. Second operand 3 states. [2020-12-22 16:51:53,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:51:53,477 INFO L93 Difference]: Finished difference Result 146598 states and 191851 transitions. [2020-12-22 16:51:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:51:53,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-12-22 16:51:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:51:53,664 INFO L225 Difference]: With dead ends: 146598 [2020-12-22 16:51:53,665 INFO L226 Difference]: Without dead ends: 80510 [2020-12-22 16:51:53,773 INFO L677 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 [2020-12-22 16:51:54,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80510 states. [2020-12-22 16:51:55,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80510 to 80462. [2020-12-22 16:51:55,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80462 states. [2020-12-22 16:51:55,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80462 states to 80462 states and 105317 transitions. [2020-12-22 16:51:55,932 INFO L78 Accepts]: Start accepts. Automaton has 80462 states and 105317 transitions. Word has length 167 [2020-12-22 16:51:55,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:51:55,932 INFO L481 AbstractCegarLoop]: Abstraction has 80462 states and 105317 transitions. [2020-12-22 16:51:55,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:51:55,933 INFO L276 IsEmpty]: Start isEmpty. Operand 80462 states and 105317 transitions. [2020-12-22 16:51:55,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 16:51:55,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:51:55,944 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 16:51:55,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 16:51:55,944 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:51:55,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:51:55,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1672068088, now seen corresponding path program 1 times [2020-12-22 16:51:55,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:51:55,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457446754] [2020-12-22 16:51:55,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:51:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:51:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 16:51:56,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457446754] [2020-12-22 16:51:56,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:51:56,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:51:56,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046761750] [2020-12-22 16:51:56,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:51:56,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:51:56,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:51:56,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:51:56,401 INFO L87 Difference]: Start difference. First operand 80462 states and 105317 transitions. Second operand 3 states. [2020-12-22 16:52:00,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:52:00,723 INFO L93 Difference]: Finished difference Result 175142 states and 229351 transitions. [2020-12-22 16:52:00,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:52:00,724 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-12-22 16:52:00,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:52:00,928 INFO L225 Difference]: With dead ends: 175142 [2020-12-22 16:52:00,928 INFO L226 Difference]: Without dead ends: 94788 [2020-12-22 16:52:01,134 INFO L677 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 [2020-12-22 16:52:01,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94788 states. [2020-12-22 16:52:03,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94788 to 94740. [2020-12-22 16:52:03,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94740 states. [2020-12-22 16:52:03,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94740 states to 94740 states and 124067 transitions. [2020-12-22 16:52:03,411 INFO L78 Accepts]: Start accepts. Automaton has 94740 states and 124067 transitions. Word has length 167 [2020-12-22 16:52:03,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:52:03,411 INFO L481 AbstractCegarLoop]: Abstraction has 94740 states and 124067 transitions. [2020-12-22 16:52:03,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:52:03,411 INFO L276 IsEmpty]: Start isEmpty. Operand 94740 states and 124067 transitions. [2020-12-22 16:52:03,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-12-22 16:52:03,425 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:52:03,426 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 16:52:03,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 16:52:03,427 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:52:03,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:52:03,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1733662153, now seen corresponding path program 1 times [2020-12-22 16:52:03,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:52:03,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3001026] [2020-12-22 16:52:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:52:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:52:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-22 16:52:04,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3001026] [2020-12-22 16:52:04,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:52:04,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:52:04,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991643099] [2020-12-22 16:52:04,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:52:04,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:52:04,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:52:04,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:52:04,065 INFO L87 Difference]: Start difference. First operand 94740 states and 124067 transitions. Second operand 3 states. [2020-12-22 16:52:08,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:52:08,481 INFO L93 Difference]: Finished difference Result 203690 states and 266835 transitions. [2020-12-22 16:52:08,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:52:08,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2020-12-22 16:52:08,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:52:08,664 INFO L225 Difference]: With dead ends: 203690 [2020-12-22 16:52:08,665 INFO L226 Difference]: Without dead ends: 109058 [2020-12-22 16:52:08,776 INFO L677 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 [2020-12-22 16:52:08,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109058 states. [2020-12-22 16:52:11,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109058 to 109010. [2020-12-22 16:52:11,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109010 states. [2020-12-22 16:52:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109010 states to 109010 states and 142809 transitions. [2020-12-22 16:52:11,272 INFO L78 Accepts]: Start accepts. Automaton has 109010 states and 142809 transitions. Word has length 203 [2020-12-22 16:52:11,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:52:11,273 INFO L481 AbstractCegarLoop]: Abstraction has 109010 states and 142809 transitions. [2020-12-22 16:52:11,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:52:11,273 INFO L276 IsEmpty]: Start isEmpty. Operand 109010 states and 142809 transitions. [2020-12-22 16:52:11,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-12-22 16:52:11,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:52:11,299 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 16:52:11,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 16:52:11,300 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:52:11,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:52:11,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1380573771, now seen corresponding path program 1 times [2020-12-22 16:52:11,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:52:11,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774497610] [2020-12-22 16:52:11,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:52:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:52:12,097 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-22 16:52:12,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774497610] [2020-12-22 16:52:12,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:52:12,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:52:12,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222755923] [2020-12-22 16:52:12,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:52:12,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:52:12,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:52:12,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:52:12,101 INFO L87 Difference]: Start difference. First operand 109010 states and 142809 transitions. Second operand 3 states. [2020-12-22 16:52:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:52:16,737 INFO L93 Difference]: Finished difference Result 232234 states and 304327 transitions. [2020-12-22 16:52:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:52:16,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2020-12-22 16:52:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:52:16,934 INFO L225 Difference]: With dead ends: 232234 [2020-12-22 16:52:16,935 INFO L226 Difference]: Without dead ends: 123332 [2020-12-22 16:52:17,036 INFO L677 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 [2020-12-22 16:52:17,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123332 states. [2020-12-22 16:52:19,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123332 to 123284. [2020-12-22 16:52:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123284 states. [2020-12-22 16:52:19,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123284 states to 123284 states and 161555 transitions. [2020-12-22 16:52:19,865 INFO L78 Accepts]: Start accepts. Automaton has 123284 states and 161555 transitions. Word has length 203 [2020-12-22 16:52:19,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:52:19,865 INFO L481 AbstractCegarLoop]: Abstraction has 123284 states and 161555 transitions. [2020-12-22 16:52:19,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:52:19,866 INFO L276 IsEmpty]: Start isEmpty. Operand 123284 states and 161555 transitions. [2020-12-22 16:52:19,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-12-22 16:52:19,878 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:52:19,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:52:19,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 16:52:19,879 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:52:19,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:52:19,880 INFO L82 PathProgramCache]: Analyzing trace with hash 315021162, now seen corresponding path program 1 times [2020-12-22 16:52:19,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:52:19,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871080103] [2020-12-22 16:52:19,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:52:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:52:20,276 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 16:52:20,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871080103] [2020-12-22 16:52:20,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:52:20,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 16:52:20,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5287164] [2020-12-22 16:52:20,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:52:20,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:52:20,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:52:20,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:52:20,279 INFO L87 Difference]: Start difference. First operand 123284 states and 161555 transitions. Second operand 3 states. [2020-12-22 16:52:23,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:52:23,003 INFO L93 Difference]: Finished difference Result 199200 states and 260194 transitions. [2020-12-22 16:52:23,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:52:23,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-12-22 16:52:23,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:52:23,187 INFO L225 Difference]: With dead ends: 199200 [2020-12-22 16:52:23,187 INFO L226 Difference]: Without dead ends: 76024 [2020-12-22 16:52:23,396 INFO L677 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 [2020-12-22 16:52:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76024 states. [2020-12-22 16:52:25,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76024 to 76024. [2020-12-22 16:52:25,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76024 states. [2020-12-22 16:52:25,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76024 states to 76024 states and 98732 transitions. [2020-12-22 16:52:25,229 INFO L78 Accepts]: Start accepts. Automaton has 76024 states and 98732 transitions. Word has length 211 [2020-12-22 16:52:25,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:52:25,229 INFO L481 AbstractCegarLoop]: Abstraction has 76024 states and 98732 transitions. [2020-12-22 16:52:25,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:52:25,230 INFO L276 IsEmpty]: Start isEmpty. Operand 76024 states and 98732 transitions. [2020-12-22 16:52:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-12-22 16:52:25,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:52:25,238 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:52:25,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 16:52:25,239 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:52:25,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:52:25,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1608803150, now seen corresponding path program 1 times [2020-12-22 16:52:25,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:52:25,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264637928] [2020-12-22 16:52:25,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:52:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:52:25,920 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-12-22 16:52:25,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264637928] [2020-12-22 16:52:25,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:52:25,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:52:25,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350078802] [2020-12-22 16:52:25,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:52:25,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:52:25,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:52:25,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:52:25,922 INFO L87 Difference]: Start difference. First operand 76024 states and 98732 transitions. Second operand 3 states. [2020-12-22 16:52:29,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:52:29,920 INFO L93 Difference]: Finished difference Result 225438 states and 292834 transitions. [2020-12-22 16:52:29,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:52:29,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2020-12-22 16:52:29,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:52:30,171 INFO L225 Difference]: With dead ends: 225438 [2020-12-22 16:52:30,172 INFO L226 Difference]: Without dead ends: 149522 [2020-12-22 16:52:30,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:52:30,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149522 states. [2020-12-22 16:52:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149522 to 77662. [2020-12-22 16:52:33,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77662 states. [2020-12-22 16:52:33,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77662 states to 77662 states and 100682 transitions. [2020-12-22 16:52:33,200 INFO L78 Accepts]: Start accepts. Automaton has 77662 states and 100682 transitions. Word has length 230 [2020-12-22 16:52:33,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:52:33,201 INFO L481 AbstractCegarLoop]: Abstraction has 77662 states and 100682 transitions. [2020-12-22 16:52:33,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:52:33,201 INFO L276 IsEmpty]: Start isEmpty. Operand 77662 states and 100682 transitions. [2020-12-22 16:52:33,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-12-22 16:52:33,210 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:52:33,211 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:52:33,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 16:52:33,211 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:52:33,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:52:33,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1910302676, now seen corresponding path program 1 times [2020-12-22 16:52:33,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:52:33,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477455623] [2020-12-22 16:52:33,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:52:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:52:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-12-22 16:52:33,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477455623] [2020-12-22 16:52:33,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:52:33,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 16:52:33,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133705478] [2020-12-22 16:52:33,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 16:52:33,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:52:33,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 16:52:33,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 16:52:33,801 INFO L87 Difference]: Start difference. First operand 77662 states and 100682 transitions. Second operand 3 states. [2020-12-22 16:52:36,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:52:36,222 INFO L93 Difference]: Finished difference Result 155216 states and 201243 transitions. [2020-12-22 16:52:36,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 16:52:36,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 238 [2020-12-22 16:52:36,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:52:36,327 INFO L225 Difference]: With dead ends: 155216 [2020-12-22 16:52:36,328 INFO L226 Difference]: Without dead ends: 77662 [2020-12-22 16:52:36,412 INFO L677 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 [2020-12-22 16:52:36,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77662 states. [2020-12-22 16:52:40,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77662 to 77662. [2020-12-22 16:52:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77662 states. [2020-12-22 16:52:40,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77662 states to 77662 states and 100488 transitions. [2020-12-22 16:52:40,367 INFO L78 Accepts]: Start accepts. Automaton has 77662 states and 100488 transitions. Word has length 238 [2020-12-22 16:52:40,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:52:40,368 INFO L481 AbstractCegarLoop]: Abstraction has 77662 states and 100488 transitions. [2020-12-22 16:52:40,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 16:52:40,368 INFO L276 IsEmpty]: Start isEmpty. Operand 77662 states and 100488 transitions. [2020-12-22 16:52:40,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 16:52:40,378 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:52:40,382 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:52:40,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 16:52:40,382 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:52:40,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:52:40,383 INFO L82 PathProgramCache]: Analyzing trace with hash -910051901, now seen corresponding path program 1 times [2020-12-22 16:52:40,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:52:40,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330006613] [2020-12-22 16:52:40,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:52:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:52:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-12-22 16:52:41,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330006613] [2020-12-22 16:52:41,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:52:41,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:52:41,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357509893] [2020-12-22 16:52:41,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:52:41,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:52:41,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:52:41,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:52:41,608 INFO L87 Difference]: Start difference. First operand 77662 states and 100488 transitions. Second operand 4 states. [2020-12-22 16:52:48,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:52:48,040 INFO L93 Difference]: Finished difference Result 232378 states and 300774 transitions. [2020-12-22 16:52:48,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 16:52:48,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 239 [2020-12-22 16:52:48,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:52:48,294 INFO L225 Difference]: With dead ends: 232378 [2020-12-22 16:52:48,294 INFO L226 Difference]: Without dead ends: 154824 [2020-12-22 16:52:48,407 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 16:52:48,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154824 states. [2020-12-22 16:52:52,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154824 to 77662. [2020-12-22 16:52:52,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77662 states. [2020-12-22 16:52:52,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77662 states to 77662 states and 100294 transitions. [2020-12-22 16:52:52,574 INFO L78 Accepts]: Start accepts. Automaton has 77662 states and 100294 transitions. Word has length 239 [2020-12-22 16:52:52,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:52:52,575 INFO L481 AbstractCegarLoop]: Abstraction has 77662 states and 100294 transitions. [2020-12-22 16:52:52,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:52:52,575 INFO L276 IsEmpty]: Start isEmpty. Operand 77662 states and 100294 transitions. [2020-12-22 16:52:52,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-12-22 16:52:52,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:52:52,582 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:52:52,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 16:52:52,583 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:52:52,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:52:52,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1853418383, now seen corresponding path program 1 times [2020-12-22 16:52:52,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:52:52,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085246916] [2020-12-22 16:52:52,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:52:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:52:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-12-22 16:52:53,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085246916] [2020-12-22 16:52:53,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:52:53,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:52:53,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470831283] [2020-12-22 16:52:53,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:52:53,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:52:53,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:52:53,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:52:53,369 INFO L87 Difference]: Start difference. First operand 77662 states and 100294 transitions. Second operand 4 states. [2020-12-22 16:53:00,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 16:53:00,971 INFO L93 Difference]: Finished difference Result 232378 states and 300192 transitions. [2020-12-22 16:53:00,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 16:53:00,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-12-22 16:53:00,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 16:53:01,241 INFO L225 Difference]: With dead ends: 232378 [2020-12-22 16:53:01,242 INFO L226 Difference]: Without dead ends: 154824 [2020-12-22 16:53:01,373 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 16:53:01,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154824 states. [2020-12-22 16:53:05,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154824 to 77662. [2020-12-22 16:53:05,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77662 states. [2020-12-22 16:53:05,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77662 states to 77662 states and 100100 transitions. [2020-12-22 16:53:05,809 INFO L78 Accepts]: Start accepts. Automaton has 77662 states and 100100 transitions. Word has length 240 [2020-12-22 16:53:05,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 16:53:05,810 INFO L481 AbstractCegarLoop]: Abstraction has 77662 states and 100100 transitions. [2020-12-22 16:53:05,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 16:53:05,810 INFO L276 IsEmpty]: Start isEmpty. Operand 77662 states and 100100 transitions. [2020-12-22 16:53:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 16:53:05,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 16:53:05,819 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:53:05,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 16:53:05,819 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 16:53:05,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 16:53:05,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1621800222, now seen corresponding path program 1 times [2020-12-22 16:53:05,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 16:53:05,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900388133] [2020-12-22 16:53:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 16:53:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 16:53:06,559 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-12-22 16:53:06,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900388133] [2020-12-22 16:53:06,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 16:53:06,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 16:53:06,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115250476] [2020-12-22 16:53:06,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 16:53:06,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 16:53:06,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 16:53:06,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 16:53:06,565 INFO L87 Difference]: Start difference. First operand 77662 states and 100100 transitions. Second operand 4 states.