/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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 14:56:01,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 14:56:01,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 14:56:01,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 14:56:01,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 14:56:01,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 14:56:01,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 14:56:01,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 14:56:01,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 14:56:01,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 14:56:01,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 14:56:01,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 14:56:01,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 14:56:01,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 14:56:01,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 14:56:01,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 14:56:01,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 14:56:01,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 14:56:01,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 14:56:01,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 14:56:01,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 14:56:01,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 14:56:01,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 14:56:01,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 14:56:01,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 14:56:01,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 14:56:01,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 14:56:01,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 14:56:01,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 14:56:01,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 14:56:01,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 14:56:01,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 14:56:01,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 14:56:01,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 14:56:01,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 14:56:01,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 14:56:01,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 14:56:01,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 14:56:01,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 14:56:01,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 14:56:01,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 14:56:01,154 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 14:56:01,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 14:56:01,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 14:56:01,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 14:56:01,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 14:56:01,220 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 14:56:01,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 14:56:01,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 14:56:01,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 14:56:01,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 14:56:01,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 14:56:01,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 14:56:01,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 14:56:01,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 14:56:01,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 14:56:01,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 14:56:01,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 14:56:01,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 14:56:01,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:56:01,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 14:56:01,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 14:56:01,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 14:56:01,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 14:56:01,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 14:56:01,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 14:56:01,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 14:56:01,224 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 14:56:01,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 14:56:01,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 14:56:01,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 14:56:01,641 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 14:56:01,642 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 14:56:01,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i [2020-12-22 14:56:01,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55acffd22/534fc86ad743467c9900ec9df79b7e47/FLAG1a25d7849 [2020-12-22 14:56:02,836 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 14:56:02,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i [2020-12-22 14:56:02,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55acffd22/534fc86ad743467c9900ec9df79b7e47/FLAG1a25d7849 [2020-12-22 14:56:03,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55acffd22/534fc86ad743467c9900ec9df79b7e47 [2020-12-22 14:56:03,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 14:56:03,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 14:56:03,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 14:56:03,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 14:56:03,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 14:56:03,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:56:03" (1/1) ... [2020-12-22 14:56:03,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c5682d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:03, skipping insertion in model container [2020-12-22 14:56:03,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:56:03" (1/1) ... [2020-12-22 14:56:03,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 14:56:03,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 14:56:05,936 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i[261928,261941] [2020-12-22 14:56:06,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:56:06,093 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 14:56:06,632 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i[261928,261941] [2020-12-22 14:56:06,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:56:07,048 INFO L208 MainTranslator]: Completed translation [2020-12-22 14:56:07,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:07 WrapperNode [2020-12-22 14:56:07,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 14:56:07,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 14:56:07,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 14:56:07,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 14:56:07,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:07" (1/1) ... [2020-12-22 14:56:07,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:07" (1/1) ... [2020-12-22 14:56:11,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 14:56:11,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 14:56:11,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 14:56:11,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 14:56:11,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:07" (1/1) ... [2020-12-22 14:56:11,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:07" (1/1) ... [2020-12-22 14:56:11,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:07" (1/1) ... [2020-12-22 14:56:11,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:07" (1/1) ... [2020-12-22 14:56:12,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:07" (1/1) ... [2020-12-22 14:56:13,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:07" (1/1) ... [2020-12-22 14:56:13,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:07" (1/1) ... [2020-12-22 14:56:13,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 14:56:13,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 14:56:13,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 14:56:13,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 14:56:13,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:07" (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 14:56:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 14:56:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 14:56:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 14:56:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 14:56:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 14:56:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 14:56:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 14:56:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 14:56:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 14:56:13,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 14:56:13,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 14:56:13,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 14:56:13,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 14:56:13,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 14:56:13,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 14:56:51,781 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 14:56:51,782 INFO L299 CfgBuilder]: Removed 18962 assume(true) statements. [2020-12-22 14:56:51,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:56:51 BoogieIcfgContainer [2020-12-22 14:56:51,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 14:56:51,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 14:56:51,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 14:56:51,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 14:56:51,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:56:03" (1/3) ... [2020-12-22 14:56:51,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b0bb14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:56:51, skipping insertion in model container [2020-12-22 14:56:51,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:56:07" (2/3) ... [2020-12-22 14:56:51,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b0bb14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:56:51, skipping insertion in model container [2020-12-22 14:56:51,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:56:51" (3/3) ... [2020-12-22 14:56:51,803 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--dmfe.ko-entry_point.cil.out.i [2020-12-22 14:56:51,810 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 14:56:51,820 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2020-12-22 14:56:51,840 INFO L253 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2020-12-22 14:56:51,914 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 14:56:51,915 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 14:56:51,915 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 14:56:51,915 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 14:56:51,915 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 14:56:51,915 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 14:56:51,915 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 14:56:51,915 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 14:56:52,055 INFO L276 IsEmpty]: Start isEmpty. Operand 11512 states. [2020-12-22 14:56:52,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 14:56:52,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:56:52,077 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] [2020-12-22 14:56:52,078 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:56:52,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:56:52,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1102701063, now seen corresponding path program 1 times [2020-12-22 14:56:52,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:56:52,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338675520] [2020-12-22 14:56:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:56:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:56:52,925 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 14:56:52,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338675520] [2020-12-22 14:56:52,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:56:52,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:56:52,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031095454] [2020-12-22 14:56:52,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 14:56:52,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:56:52,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 14:56:52,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:56:52,953 INFO L87 Difference]: Start difference. First operand 11512 states. Second operand 2 states. [2020-12-22 14:56:53,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:56:53,343 INFO L93 Difference]: Finished difference Result 23020 states and 27287 transitions. [2020-12-22 14:56:53,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 14:56:53,345 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2020-12-22 14:56:53,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:56:53,430 INFO L225 Difference]: With dead ends: 23020 [2020-12-22 14:56:53,430 INFO L226 Difference]: Without dead ends: 11447 [2020-12-22 14:56:53,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:56:53,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11447 states. [2020-12-22 14:56:53,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11447 to 11447. [2020-12-22 14:56:53,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11447 states. [2020-12-22 14:56:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11447 states to 11447 states and 13472 transitions. [2020-12-22 14:56:53,871 INFO L78 Accepts]: Start accepts. Automaton has 11447 states and 13472 transitions. Word has length 52 [2020-12-22 14:56:53,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:56:53,872 INFO L481 AbstractCegarLoop]: Abstraction has 11447 states and 13472 transitions. [2020-12-22 14:56:53,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 14:56:53,872 INFO L276 IsEmpty]: Start isEmpty. Operand 11447 states and 13472 transitions. [2020-12-22 14:56:53,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 14:56:53,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:56:53,879 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] [2020-12-22 14:56:53,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 14:56:53,880 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:56:53,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:56:53,882 INFO L82 PathProgramCache]: Analyzing trace with hash 858444801, now seen corresponding path program 1 times [2020-12-22 14:56:53,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:56:53,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107432377] [2020-12-22 14:56:53,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:56:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:56:54,323 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 14:56:54,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107432377] [2020-12-22 14:56:54,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:56:54,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:56:54,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361955681] [2020-12-22 14:56:54,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:56:54,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:56:54,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:56:54,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:56:54,328 INFO L87 Difference]: Start difference. First operand 11447 states and 13472 transitions. Second operand 4 states. [2020-12-22 14:56:56,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:56:56,722 INFO L93 Difference]: Finished difference Result 55067 states and 64513 transitions. [2020-12-22 14:56:56,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:56:56,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 14:56:56,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:56:56,897 INFO L225 Difference]: With dead ends: 55067 [2020-12-22 14:56:56,897 INFO L226 Difference]: Without dead ends: 43645 [2020-12-22 14:56:56,938 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 14:56:57,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43645 states. [2020-12-22 14:56:57,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43645 to 21921. [2020-12-22 14:56:57,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21921 states. [2020-12-22 14:56:58,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21921 states to 21921 states and 25679 transitions. [2020-12-22 14:56:58,010 INFO L78 Accepts]: Start accepts. Automaton has 21921 states and 25679 transitions. Word has length 52 [2020-12-22 14:56:58,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:56:58,012 INFO L481 AbstractCegarLoop]: Abstraction has 21921 states and 25679 transitions. [2020-12-22 14:56:58,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:56:58,012 INFO L276 IsEmpty]: Start isEmpty. Operand 21921 states and 25679 transitions. [2020-12-22 14:56:58,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 14:56:58,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:56:58,022 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] [2020-12-22 14:56:58,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 14:56:58,023 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:56:58,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:56:58,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1063493715, now seen corresponding path program 1 times [2020-12-22 14:56:58,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:56:58,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020209416] [2020-12-22 14:56:58,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:56:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:56:58,339 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 14:56:58,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020209416] [2020-12-22 14:56:58,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:56:58,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:56:58,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330952883] [2020-12-22 14:56:58,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:56:58,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:56:58,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:56:58,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:56:58,342 INFO L87 Difference]: Start difference. First operand 21921 states and 25679 transitions. Second operand 4 states. [2020-12-22 14:57:01,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:57:01,143 INFO L93 Difference]: Finished difference Result 107437 states and 125550 transitions. [2020-12-22 14:57:01,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:57:01,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 14:57:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:57:01,362 INFO L225 Difference]: With dead ends: 107437 [2020-12-22 14:57:01,363 INFO L226 Difference]: Without dead ends: 85541 [2020-12-22 14:57:01,418 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 14:57:01,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85541 states. [2020-12-22 14:57:03,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85541 to 43553. [2020-12-22 14:57:03,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43553 states. [2020-12-22 14:57:03,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43553 states to 43553 states and 51005 transitions. [2020-12-22 14:57:03,601 INFO L78 Accepts]: Start accepts. Automaton has 43553 states and 51005 transitions. Word has length 53 [2020-12-22 14:57:03,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:57:03,602 INFO L481 AbstractCegarLoop]: Abstraction has 43553 states and 51005 transitions. [2020-12-22 14:57:03,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:57:03,602 INFO L276 IsEmpty]: Start isEmpty. Operand 43553 states and 51005 transitions. [2020-12-22 14:57:03,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 14:57:03,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:57:03,606 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] [2020-12-22 14:57:03,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 14:57:03,606 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:57:03,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:57:03,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1477961334, now seen corresponding path program 1 times [2020-12-22 14:57:03,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:57:03,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228694905] [2020-12-22 14:57:03,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:57:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:57:04,040 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 14:57:04,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228694905] [2020-12-22 14:57:04,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:57:04,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:57:04,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146894296] [2020-12-22 14:57:04,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:57:04,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:57:04,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:57:04,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:57:04,045 INFO L87 Difference]: Start difference. First operand 43553 states and 51005 transitions. Second operand 4 states. [2020-12-22 14:57:09,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:57:09,066 INFO L93 Difference]: Finished difference Result 214015 states and 250069 transitions. [2020-12-22 14:57:09,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:57:09,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 14:57:09,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:57:09,657 INFO L225 Difference]: With dead ends: 214015 [2020-12-22 14:57:09,657 INFO L226 Difference]: Without dead ends: 170487 [2020-12-22 14:57:09,791 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 14:57:10,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170487 states. [2020-12-22 14:57:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170487 to 86594. [2020-12-22 14:57:13,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86594 states. [2020-12-22 14:57:13,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86594 states to 86594 states and 101357 transitions. [2020-12-22 14:57:13,421 INFO L78 Accepts]: Start accepts. Automaton has 86594 states and 101357 transitions. Word has length 54 [2020-12-22 14:57:13,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:57:13,428 INFO L481 AbstractCegarLoop]: Abstraction has 86594 states and 101357 transitions. [2020-12-22 14:57:13,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:57:13,428 INFO L276 IsEmpty]: Start isEmpty. Operand 86594 states and 101357 transitions. [2020-12-22 14:57:13,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 14:57:13,438 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:57:13,439 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] [2020-12-22 14:57:13,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 14:57:13,439 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:57:13,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:57:13,440 INFO L82 PathProgramCache]: Analyzing trace with hash 2042376126, now seen corresponding path program 1 times [2020-12-22 14:57:13,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:57:13,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622191290] [2020-12-22 14:57:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:57:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:57:13,705 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 14:57:13,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622191290] [2020-12-22 14:57:13,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:57:13,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:57:13,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914952742] [2020-12-22 14:57:13,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:57:13,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:57:13,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:57:13,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:57:13,710 INFO L87 Difference]: Start difference. First operand 86594 states and 101357 transitions. Second operand 4 states. [2020-12-22 14:57:24,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:57:24,616 INFO L93 Difference]: Finished difference Result 426498 states and 498199 transitions. [2020-12-22 14:57:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:57:24,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-12-22 14:57:24,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:57:25,600 INFO L225 Difference]: With dead ends: 426498 [2020-12-22 14:57:25,601 INFO L226 Difference]: Without dead ends: 339929 [2020-12-22 14:57:25,823 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 14:57:26,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339929 states. [2020-12-22 14:57:32,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339929 to 172229. [2020-12-22 14:57:32,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172229 states. [2020-12-22 14:57:33,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172229 states to 172229 states and 201459 transitions. [2020-12-22 14:57:33,244 INFO L78 Accepts]: Start accepts. Automaton has 172229 states and 201459 transitions. Word has length 55 [2020-12-22 14:57:33,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:57:33,245 INFO L481 AbstractCegarLoop]: Abstraction has 172229 states and 201459 transitions. [2020-12-22 14:57:33,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:57:33,245 INFO L276 IsEmpty]: Start isEmpty. Operand 172229 states and 201459 transitions. [2020-12-22 14:57:33,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 14:57:33,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:57:33,250 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] [2020-12-22 14:57:33,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 14:57:33,250 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:57:33,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:57:33,251 INFO L82 PathProgramCache]: Analyzing trace with hash -65627668, now seen corresponding path program 1 times [2020-12-22 14:57:33,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:57:33,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429330903] [2020-12-22 14:57:33,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:57:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:57:33,803 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 14:57:33,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429330903] [2020-12-22 14:57:33,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:57:33,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:57:33,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477783544] [2020-12-22 14:57:33,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:57:33,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:57:33,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:57:33,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:57:33,806 INFO L87 Difference]: Start difference. First operand 172229 states and 201459 transitions. Second operand 3 states. [2020-12-22 14:57:45,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:57:45,055 INFO L93 Difference]: Finished difference Result 473777 states and 552511 transitions. [2020-12-22 14:57:45,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:57:45,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-22 14:57:45,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:57:45,579 INFO L225 Difference]: With dead ends: 473777 [2020-12-22 14:57:45,579 INFO L226 Difference]: Without dead ends: 301573 [2020-12-22 14:57:46,103 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 14:57:46,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301573 states. [2020-12-22 14:57:56,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301573 to 299789. [2020-12-22 14:57:56,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299789 states. [2020-12-22 14:57:57,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299789 states to 299789 states and 348811 transitions. [2020-12-22 14:57:57,800 INFO L78 Accepts]: Start accepts. Automaton has 299789 states and 348811 transitions. Word has length 59 [2020-12-22 14:57:57,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:57:57,800 INFO L481 AbstractCegarLoop]: Abstraction has 299789 states and 348811 transitions. [2020-12-22 14:57:57,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:57:57,801 INFO L276 IsEmpty]: Start isEmpty. Operand 299789 states and 348811 transitions. [2020-12-22 14:57:57,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 14:57:57,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:57:57,804 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 14:57:57,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 14:57:57,804 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:57:57,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:57:57,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1892346088, now seen corresponding path program 1 times [2020-12-22 14:57:57,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:57:57,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097685563] [2020-12-22 14:57:57,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:57:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:57:58,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 14:57:58,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097685563] [2020-12-22 14:57:58,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:57:58,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:57:58,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692542870] [2020-12-22 14:57:58,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:57:58,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:57:58,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:57:58,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:57:58,121 INFO L87 Difference]: Start difference. First operand 299789 states and 348811 transitions. Second operand 5 states. [2020-12-22 14:58:30,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:58:30,747 INFO L93 Difference]: Finished difference Result 1041157 states and 1210003 transitions. [2020-12-22 14:58:30,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 14:58:30,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-12-22 14:58:30,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:58:33,368 INFO L225 Difference]: With dead ends: 1041157 [2020-12-22 14:58:33,368 INFO L226 Difference]: Without dead ends: 741393 [2020-12-22 14:58:34,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 14:58:34,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741393 states. [2020-12-22 14:58:51,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741393 to 299869. [2020-12-22 14:58:51,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299869 states. [2020-12-22 14:58:52,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299869 states to 299869 states and 348891 transitions. [2020-12-22 14:58:52,657 INFO L78 Accepts]: Start accepts. Automaton has 299869 states and 348891 transitions. Word has length 60 [2020-12-22 14:58:52,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:58:52,658 INFO L481 AbstractCegarLoop]: Abstraction has 299869 states and 348891 transitions. [2020-12-22 14:58:52,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:58:52,658 INFO L276 IsEmpty]: Start isEmpty. Operand 299869 states and 348891 transitions. [2020-12-22 14:58:52,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 14:58:52,690 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:58:52,690 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] [2020-12-22 14:58:52,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 14:58:52,691 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:58:52,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:58:52,691 INFO L82 PathProgramCache]: Analyzing trace with hash -495064297, now seen corresponding path program 1 times [2020-12-22 14:58:52,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:58:52,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305212771] [2020-12-22 14:58:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:58:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:58:52,927 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 14:58:52,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305212771] [2020-12-22 14:58:52,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:58:52,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:58:52,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309899620] [2020-12-22 14:58:52,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:58:52,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:58:52,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:58:52,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:58:52,931 INFO L87 Difference]: Start difference. First operand 299869 states and 348891 transitions. Second operand 3 states. [2020-12-22 14:59:15,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:59:15,753 INFO L93 Difference]: Finished difference Result 738351 states and 861768 transitions. [2020-12-22 14:59:15,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:59:15,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 14:59:15,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:59:16,896 INFO L225 Difference]: With dead ends: 738351 [2020-12-22 14:59:16,896 INFO L226 Difference]: Without dead ends: 438507 [2020-12-22 14:59:17,486 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 14:59:17,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438507 states.