/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-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:43:51,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:43:51,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:43:51,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:43:51,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:43:51,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:43:51,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:43:51,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:43:51,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:43:51,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:43:51,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:43:51,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:43:51,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:43:51,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:43:51,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:43:51,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:43:51,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:43:51,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:43:51,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:43:51,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:43:51,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:43:51,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:43:51,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:43:51,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:43:51,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:43:51,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:43:51,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:43:51,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:43:51,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:43:51,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:43:51,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:43:51,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:43:51,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:43:51,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:43:51,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:43:51,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:43:51,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:43:51,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:43:51,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:43:51,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:43:51,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:43:51,976 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:43:52,012 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:43:52,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:43:52,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:43:52,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:43:52,017 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:43:52,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:43:52,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:43:52,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:43:52,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:43:52,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:43:52,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:43:52,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:43:52,021 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:43:52,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:43:52,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:43:52,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:43:52,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:43:52,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:43:52,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:43:52,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:43:52,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:43:52,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:43:52,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:43:52,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:43:52,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:43:52,026 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:43:52,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:43:52,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:43:52,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:43:52,566 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:43:52,567 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:43:52,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2020-12-22 13:43:52,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d0b6157b/894199c0abf640e48652f70622cc66c3/FLAG67bb3ee3f [2020-12-22 13:43:53,722 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:43:53,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2020-12-22 13:43:53,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d0b6157b/894199c0abf640e48652f70622cc66c3/FLAG67bb3ee3f [2020-12-22 13:43:54,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d0b6157b/894199c0abf640e48652f70622cc66c3 [2020-12-22 13:43:54,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:43:54,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:43:54,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:43:54,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:43:54,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:43:54,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:43:54" (1/1) ... [2020-12-22 13:43:54,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a17f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:43:54, skipping insertion in model container [2020-12-22 13:43:54,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:43:54" (1/1) ... [2020-12-22 13:43:54,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:43:54,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:43:55,159 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-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2020-12-22 13:43:56,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:43:56,501 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:43:56,623 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-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2020-12-22 13:43:56,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:43:57,209 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:43:57,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:43:57 WrapperNode [2020-12-22 13:43:57,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:43:57,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:43:57,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:43:57,212 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:43:57,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:43:57" (1/1) ... [2020-12-22 13:43:57,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:43:57" (1/1) ... [2020-12-22 13:43:57,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:43:57,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:43:57,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:43:57,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:43:57,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:43:57" (1/1) ... [2020-12-22 13:43:57,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:43:57" (1/1) ... [2020-12-22 13:43:57,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:43:57" (1/1) ... [2020-12-22 13:43:57,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:43:57" (1/1) ... [2020-12-22 13:43:58,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:43:57" (1/1) ... [2020-12-22 13:43:58,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:43:57" (1/1) ... [2020-12-22 13:43:58,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:43:57" (1/1) ... [2020-12-22 13:43:58,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:43:58,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:43:58,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:43:58,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:43:58,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:43:57" (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 13:43:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:43:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2020-12-22 13:43:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:43:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:43:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:43:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:43:58,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:43:58,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:43:58,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:43:58,474 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:43:58,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:43:58,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:43:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:43:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:43:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:43:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:43:58,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:44:09,233 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:44:09,233 INFO L299 CfgBuilder]: Removed 1710 assume(true) statements. [2020-12-22 13:44:09,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:44:09 BoogieIcfgContainer [2020-12-22 13:44:09,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:44:09,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:44:09,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:44:09,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:44:09,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:43:54" (1/3) ... [2020-12-22 13:44:09,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72390b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:44:09, skipping insertion in model container [2020-12-22 13:44:09,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:43:57" (2/3) ... [2020-12-22 13:44:09,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72390b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:44:09, skipping insertion in model container [2020-12-22 13:44:09,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:44:09" (3/3) ... [2020-12-22 13:44:09,248 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2020-12-22 13:44:09,255 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:44:09,262 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 13:44:09,284 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 13:44:09,322 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:44:09,322 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:44:09,322 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:44:09,322 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:44:09,323 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:44:09,323 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:44:09,323 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:44:09,323 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:44:09,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states. [2020-12-22 13:44:09,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 13:44:09,387 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:44:09,388 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] [2020-12-22 13:44:09,388 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:44:09,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:44:09,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1160297611, now seen corresponding path program 1 times [2020-12-22 13:44:09,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:44:09,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326675366] [2020-12-22 13:44:09,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:44:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:44:09,969 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 13:44:09,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326675366] [2020-12-22 13:44:09,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:44:09,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:44:09,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186232029] [2020-12-22 13:44:09,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:44:09,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:44:09,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:44:09,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:44:09,995 INFO L87 Difference]: Start difference. First operand 1822 states. Second operand 3 states. [2020-12-22 13:44:10,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:44:10,433 INFO L93 Difference]: Finished difference Result 4527 states and 6741 transitions. [2020-12-22 13:44:10,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:44:10,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-12-22 13:44:10,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:44:10,478 INFO L225 Difference]: With dead ends: 4527 [2020-12-22 13:44:10,478 INFO L226 Difference]: Without dead ends: 2643 [2020-12-22 13:44:10,492 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 13:44:10,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2643 states. [2020-12-22 13:44:10,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2643 to 2643. [2020-12-22 13:44:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2643 states. [2020-12-22 13:44:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 3893 transitions. [2020-12-22 13:44:10,694 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 3893 transitions. Word has length 34 [2020-12-22 13:44:10,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:44:10,695 INFO L481 AbstractCegarLoop]: Abstraction has 2643 states and 3893 transitions. [2020-12-22 13:44:10,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:44:10,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 3893 transitions. [2020-12-22 13:44:10,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 13:44:10,706 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:44:10,706 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:44:10,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:44:10,707 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:44:10,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:44:10,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1112572812, now seen corresponding path program 1 times [2020-12-22 13:44:10,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:44:10,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72490814] [2020-12-22 13:44:10,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:44:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:44:10,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:44:10,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72490814] [2020-12-22 13:44:10,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:44:10,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:44:10,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879140387] [2020-12-22 13:44:10,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:44:10,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:44:10,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:44:10,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:44:10,916 INFO L87 Difference]: Start difference. First operand 2643 states and 3893 transitions. Second operand 3 states. [2020-12-22 13:44:11,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:44:11,048 INFO L93 Difference]: Finished difference Result 5248 states and 7741 transitions. [2020-12-22 13:44:11,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:44:11,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-22 13:44:11,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:44:11,063 INFO L225 Difference]: With dead ends: 5248 [2020-12-22 13:44:11,064 INFO L226 Difference]: Without dead ends: 2643 [2020-12-22 13:44:11,069 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 13:44:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2643 states. [2020-12-22 13:44:11,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2643 to 2643. [2020-12-22 13:44:11,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2643 states. [2020-12-22 13:44:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 3891 transitions. [2020-12-22 13:44:11,158 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 3891 transitions. Word has length 58 [2020-12-22 13:44:11,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:44:11,159 INFO L481 AbstractCegarLoop]: Abstraction has 2643 states and 3891 transitions. [2020-12-22 13:44:11,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:44:11,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 3891 transitions. [2020-12-22 13:44:11,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 13:44:11,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:44:11,167 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:44:11,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:44:11,168 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:44:11,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:44:11,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1040186254, now seen corresponding path program 1 times [2020-12-22 13:44:11,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:44:11,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628440071] [2020-12-22 13:44:11,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:44:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:44:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:44:11,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628440071] [2020-12-22 13:44:11,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:44:11,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:44:11,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056785473] [2020-12-22 13:44:11,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:44:11,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:44:11,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:44:11,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:44:11,358 INFO L87 Difference]: Start difference. First operand 2643 states and 3891 transitions. Second operand 4 states. [2020-12-22 13:44:11,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:44:11,584 INFO L93 Difference]: Finished difference Result 5252 states and 7741 transitions. [2020-12-22 13:44:11,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:44:11,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-12-22 13:44:11,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:44:11,600 INFO L225 Difference]: With dead ends: 5252 [2020-12-22 13:44:11,600 INFO L226 Difference]: Without dead ends: 2643 [2020-12-22 13:44:11,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 13:44:11,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2643 states. [2020-12-22 13:44:11,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2643 to 2643. [2020-12-22 13:44:11,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2643 states. [2020-12-22 13:44:11,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 3889 transitions. [2020-12-22 13:44:11,703 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 3889 transitions. Word has length 58 [2020-12-22 13:44:11,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:44:11,704 INFO L481 AbstractCegarLoop]: Abstraction has 2643 states and 3889 transitions. [2020-12-22 13:44:11,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:44:11,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 3889 transitions. [2020-12-22 13:44:11,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 13:44:11,708 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:44:11,709 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:44:11,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:44:11,709 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:44:11,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:44:11,711 INFO L82 PathProgramCache]: Analyzing trace with hash -950381416, now seen corresponding path program 1 times [2020-12-22 13:44:11,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:44:11,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886729530] [2020-12-22 13:44:11,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:44:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:44:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:44:11,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886729530] [2020-12-22 13:44:11,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:44:11,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:44:11,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279090513] [2020-12-22 13:44:11,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:44:11,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:44:11,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:44:11,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:44:11,925 INFO L87 Difference]: Start difference. First operand 2643 states and 3889 transitions. Second operand 4 states. [2020-12-22 13:44:12,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:44:12,245 INFO L93 Difference]: Finished difference Result 5250 states and 7735 transitions. [2020-12-22 13:44:12,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:44:12,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 13:44:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:44:12,279 INFO L225 Difference]: With dead ends: 5250 [2020-12-22 13:44:12,280 INFO L226 Difference]: Without dead ends: 5248 [2020-12-22 13:44:12,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:44:12,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5248 states. [2020-12-22 13:44:12,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5248 to 2645. [2020-12-22 13:44:12,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2645 states. [2020-12-22 13:44:12,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2645 states to 2645 states and 3891 transitions. [2020-12-22 13:44:12,521 INFO L78 Accepts]: Start accepts. Automaton has 2645 states and 3891 transitions. Word has length 61 [2020-12-22 13:44:12,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:44:12,523 INFO L481 AbstractCegarLoop]: Abstraction has 2645 states and 3891 transitions. [2020-12-22 13:44:12,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:44:12,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2645 states and 3891 transitions. [2020-12-22 13:44:12,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 13:44:12,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:44:12,530 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:44:12,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:44:12,530 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:44:12,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:44:12,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1784844290, now seen corresponding path program 1 times [2020-12-22 13:44:12,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:44:12,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865016658] [2020-12-22 13:44:12,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:44:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:44:12,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:44:12,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865016658] [2020-12-22 13:44:12,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:44:12,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:44:12,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443432168] [2020-12-22 13:44:12,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:44:12,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:44:12,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:44:12,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:44:12,734 INFO L87 Difference]: Start difference. First operand 2645 states and 3891 transitions. Second operand 4 states. [2020-12-22 13:44:13,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:44:13,173 INFO L93 Difference]: Finished difference Result 7859 states and 11583 transitions. [2020-12-22 13:44:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:44:13,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-12-22 13:44:13,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:44:13,204 INFO L225 Difference]: With dead ends: 7859 [2020-12-22 13:44:13,205 INFO L226 Difference]: Without dead ends: 5252 [2020-12-22 13:44:13,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:44:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5252 states. [2020-12-22 13:44:13,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5252 to 2646. [2020-12-22 13:44:13,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2646 states. [2020-12-22 13:44:13,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 3892 transitions. [2020-12-22 13:44:13,390 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 3892 transitions. Word has length 68 [2020-12-22 13:44:13,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:44:13,390 INFO L481 AbstractCegarLoop]: Abstraction has 2646 states and 3892 transitions. [2020-12-22 13:44:13,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:44:13,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 3892 transitions. [2020-12-22 13:44:13,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 13:44:13,395 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:44:13,395 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:44:13,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:44:13,396 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:44:13,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:44:13,396 INFO L82 PathProgramCache]: Analyzing trace with hash 761784129, now seen corresponding path program 1 times [2020-12-22 13:44:13,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:44:13,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098506839] [2020-12-22 13:44:13,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:44:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:44:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:44:13,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098506839] [2020-12-22 13:44:13,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:44:13,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:44:13,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679829571] [2020-12-22 13:44:13,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:44:13,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:44:13,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:44:13,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:44:13,581 INFO L87 Difference]: Start difference. First operand 2646 states and 3892 transitions. Second operand 5 states. [2020-12-22 13:44:14,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:44:14,524 INFO L93 Difference]: Finished difference Result 10131 states and 14938 transitions. [2020-12-22 13:44:14,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 13:44:14,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-12-22 13:44:14,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:44:14,608 INFO L225 Difference]: With dead ends: 10131 [2020-12-22 13:44:14,608 INFO L226 Difference]: Without dead ends: 10129 [2020-12-22 13:44:14,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:44:14,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10129 states. [2020-12-22 13:44:14,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10129 to 2647. [2020-12-22 13:44:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2647 states. [2020-12-22 13:44:14,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 3893 transitions. [2020-12-22 13:44:14,919 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 3893 transitions. Word has length 70 [2020-12-22 13:44:14,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:44:14,922 INFO L481 AbstractCegarLoop]: Abstraction has 2647 states and 3893 transitions. [2020-12-22 13:44:14,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:44:14,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 3893 transitions. [2020-12-22 13:44:14,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 13:44:14,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:44:14,940 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:44:14,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:44:14,941 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:44:14,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:44:14,942 INFO L82 PathProgramCache]: Analyzing trace with hash -573882723, now seen corresponding path program 1 times [2020-12-22 13:44:14,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:44:14,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191571245] [2020-12-22 13:44:14,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:44:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:44:15,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:44:15,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191571245] [2020-12-22 13:44:15,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:44:15,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:44:15,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176454602] [2020-12-22 13:44:15,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:44:15,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:44:15,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:44:15,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:44:15,103 INFO L87 Difference]: Start difference. First operand 2647 states and 3893 transitions. Second operand 3 states. [2020-12-22 13:44:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:44:15,754 INFO L93 Difference]: Finished difference Result 6105 states and 8974 transitions. [2020-12-22 13:44:15,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:44:15,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-22 13:44:15,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:44:15,766 INFO L225 Difference]: With dead ends: 6105 [2020-12-22 13:44:15,766 INFO L226 Difference]: Without dead ends: 3496 [2020-12-22 13:44:15,772 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 13:44:15,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2020-12-22 13:44:15,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 2647. [2020-12-22 13:44:15,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2647 states. [2020-12-22 13:44:16,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 3892 transitions. [2020-12-22 13:44:16,008 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 3892 transitions. Word has length 84 [2020-12-22 13:44:16,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:44:16,008 INFO L481 AbstractCegarLoop]: Abstraction has 2647 states and 3892 transitions. [2020-12-22 13:44:16,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:44:16,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 3892 transitions. [2020-12-22 13:44:16,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 13:44:16,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:44:16,020 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:44:16,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:44:16,021 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:44:16,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:44:16,021 INFO L82 PathProgramCache]: Analyzing trace with hash -498722333, now seen corresponding path program 1 times [2020-12-22 13:44:16,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:44:16,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842586597] [2020-12-22 13:44:16,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:44:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:44:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:44:16,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842586597] [2020-12-22 13:44:16,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:44:16,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:44:16,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350733960] [2020-12-22 13:44:16,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:44:16,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:44:16,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:44:16,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:44:16,246 INFO L87 Difference]: Start difference. First operand 2647 states and 3892 transitions. Second operand 4 states. [2020-12-22 13:44:16,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:44:16,957 INFO L93 Difference]: Finished difference Result 7864 states and 11585 transitions. [2020-12-22 13:44:16,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:44:16,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-12-22 13:44:16,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:44:16,972 INFO L225 Difference]: With dead ends: 7864 [2020-12-22 13:44:16,973 INFO L226 Difference]: Without dead ends: 5255 [2020-12-22 13:44:16,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:44:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5255 states. [2020-12-22 13:44:17,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5255 to 2651. [2020-12-22 13:44:17,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2651 states. [2020-12-22 13:44:17,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 3897 transitions. [2020-12-22 13:44:17,236 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 3897 transitions. Word has length 86 [2020-12-22 13:44:17,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:44:17,237 INFO L481 AbstractCegarLoop]: Abstraction has 2651 states and 3897 transitions. [2020-12-22 13:44:17,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:44:17,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 3897 transitions. [2020-12-22 13:44:17,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 13:44:17,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:44:17,244 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:44:17,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:44:17,245 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:44:17,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:44:17,245 INFO L82 PathProgramCache]: Analyzing trace with hash -767339072, now seen corresponding path program 1 times [2020-12-22 13:44:17,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:44:17,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699429701] [2020-12-22 13:44:17,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:44:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:44:17,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:44:17,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699429701] [2020-12-22 13:44:17,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:44:17,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:44:17,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033476092] [2020-12-22 13:44:17,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:44:17,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:44:17,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:44:17,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:44:17,375 INFO L87 Difference]: Start difference. First operand 2651 states and 3897 transitions. Second operand 3 states. [2020-12-22 13:44:17,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:44:17,883 INFO L93 Difference]: Finished difference Result 5291 states and 7776 transitions. [2020-12-22 13:44:17,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:44:17,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-22 13:44:17,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:44:17,891 INFO L225 Difference]: With dead ends: 5291 [2020-12-22 13:44:17,891 INFO L226 Difference]: Without dead ends: 2678 [2020-12-22 13:44:17,896 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 13:44:17,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2020-12-22 13:44:18,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2651. [2020-12-22 13:44:18,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2651 states. [2020-12-22 13:44:18,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 3816 transitions. [2020-12-22 13:44:18,162 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 3816 transitions. Word has length 89 [2020-12-22 13:44:18,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:44:18,163 INFO L481 AbstractCegarLoop]: Abstraction has 2651 states and 3816 transitions. [2020-12-22 13:44:18,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:44:18,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 3816 transitions. [2020-12-22 13:44:18,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 13:44:18,170 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:44:18,170 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:44:18,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:44:18,171 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:44:18,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:44:18,171 INFO L82 PathProgramCache]: Analyzing trace with hash -2112247813, now seen corresponding path program 1 times [2020-12-22 13:44:18,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:44:18,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490897909] [2020-12-22 13:44:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:44:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:44:18,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:44:18,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490897909] [2020-12-22 13:44:18,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534119562] [2020-12-22 13:44:18,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:44:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:44:19,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:44:19,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:44:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:44:19,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:44:19,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 13:44:19,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177026292] [2020-12-22 13:44:19,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:44:19,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:44:19,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:44:19,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:44:19,199 INFO L87 Difference]: Start difference. First operand 2651 states and 3816 transitions. Second operand 7 states. [2020-12-22 13:44:20,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:44:20,392 INFO L93 Difference]: Finished difference Result 10476 states and 15110 transitions. [2020-12-22 13:44:20,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:44:20,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-12-22 13:44:20,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:44:20,414 INFO L225 Difference]: With dead ends: 10476 [2020-12-22 13:44:20,414 INFO L226 Difference]: Without dead ends: 7863 [2020-12-22 13:44:20,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:44:20,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7863 states. [2020-12-22 13:44:20,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7863 to 2654. [2020-12-22 13:44:20,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2654 states. [2020-12-22 13:44:20,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 3820 transitions. [2020-12-22 13:44:20,718 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 3820 transitions. Word has length 92 [2020-12-22 13:44:20,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:44:20,718 INFO L481 AbstractCegarLoop]: Abstraction has 2654 states and 3820 transitions. [2020-12-22 13:44:20,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:44:20,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 3820 transitions. [2020-12-22 13:44:20,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 13:44:20,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:44:20,727 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:44:20,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 13:44:20,943 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:44:20,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:44:20,944 INFO L82 PathProgramCache]: Analyzing trace with hash 2059389464, now seen corresponding path program 2 times [2020-12-22 13:44:20,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:44:20,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134069904] [2020-12-22 13:44:20,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:44:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:44:21,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:44:21,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134069904] [2020-12-22 13:44:21,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854613242] [2020-12-22 13:44:21,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:44:21,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:44:21,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:44:21,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 13:44:21,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:44:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:44:22,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:44:22,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2020-12-22 13:44:22,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412469774] [2020-12-22 13:44:22,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:44:22,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:44:22,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:44:22,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:44:22,007 INFO L87 Difference]: Start difference. First operand 2654 states and 3820 transitions. Second operand 4 states. [2020-12-22 13:44:23,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:44:23,061 INFO L93 Difference]: Finished difference Result 10152 states and 14649 transitions. [2020-12-22 13:44:23,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:44:23,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-12-22 13:44:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:44:23,084 INFO L225 Difference]: With dead ends: 10152 [2020-12-22 13:44:23,084 INFO L226 Difference]: Without dead ends: 7536 [2020-12-22 13:44:23,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:44:23,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7536 states. [2020-12-22 13:44:23,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7536 to 2656. [2020-12-22 13:44:23,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2656 states. [2020-12-22 13:44:23,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 3822 transitions. [2020-12-22 13:44:23,400 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 3822 transitions. Word has length 95 [2020-12-22 13:44:23,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:44:23,401 INFO L481 AbstractCegarLoop]: Abstraction has 2656 states and 3822 transitions. [2020-12-22 13:44:23,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:44:23,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 3822 transitions. [2020-12-22 13:44:23,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 13:44:23,408 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:44:23,409 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:44:23,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:44:23,623 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:44:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:44:23,624 INFO L82 PathProgramCache]: Analyzing trace with hash -2123909450, now seen corresponding path program 1 times [2020-12-22 13:44:23,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:44:23,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575370981] [2020-12-22 13:44:23,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:44:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:44:23,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:44:23,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575370981] [2020-12-22 13:44:23,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:44:23,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:44:23,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202707548] [2020-12-22 13:44:23,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:44:23,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:44:23,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:44:23,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:44:23,753 INFO L87 Difference]: Start difference. First operand 2656 states and 3822 transitions. Second operand 3 states. [2020-12-22 13:44:24,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:44:24,327 INFO L93 Difference]: Finished difference Result 7728 states and 11146 transitions. [2020-12-22 13:44:24,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:44:24,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-22 13:44:24,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:44:24,342 INFO L225 Difference]: With dead ends: 7728 [2020-12-22 13:44:24,343 INFO L226 Difference]: Without dead ends: 5110 [2020-12-22 13:44:24,349 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 13:44:24,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5110 states. [2020-12-22 13:44:24,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5110 to 2659. [2020-12-22 13:44:24,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2659 states. [2020-12-22 13:44:24,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2659 states to 2659 states and 3826 transitions. [2020-12-22 13:44:24,729 INFO L78 Accepts]: Start accepts. Automaton has 2659 states and 3826 transitions. Word has length 99 [2020-12-22 13:44:24,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:44:24,729 INFO L481 AbstractCegarLoop]: Abstraction has 2659 states and 3826 transitions. [2020-12-22 13:44:24,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:44:24,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2659 states and 3826 transitions. [2020-12-22 13:44:24,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 13:44:24,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:44:24,737 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:44:24,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 13:44:24,737 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:44:24,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:44:24,738 INFO L82 PathProgramCache]: Analyzing trace with hash 152246333, now seen corresponding path program 1 times [2020-12-22 13:44:24,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:44:24,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950553100] [2020-12-22 13:44:24,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:44:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:44:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:44:25,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950553100] [2020-12-22 13:44:25,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:44:25,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 13:44:25,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319717138] [2020-12-22 13:44:25,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:44:25,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:44:25,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:44:25,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:44:25,064 INFO L87 Difference]: Start difference. First operand 2659 states and 3826 transitions. Second operand 7 states. [2020-12-22 13:44:27,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:44:27,361 INFO L93 Difference]: Finished difference Result 14114 states and 20319 transitions. [2020-12-22 13:44:27,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 13:44:27,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-12-22 13:44:27,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:44:27,390 INFO L225 Difference]: With dead ends: 14114 [2020-12-22 13:44:27,391 INFO L226 Difference]: Without dead ends: 11479 [2020-12-22 13:44:27,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-12-22 13:44:27,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11479 states. [2020-12-22 13:44:27,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11479 to 2659. [2020-12-22 13:44:27,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2659 states. [2020-12-22 13:44:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2659 states to 2659 states and 3824 transitions. [2020-12-22 13:44:27,810 INFO L78 Accepts]: Start accepts. Automaton has 2659 states and 3824 transitions. Word has length 103 [2020-12-22 13:44:27,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:44:27,810 INFO L481 AbstractCegarLoop]: Abstraction has 2659 states and 3824 transitions. [2020-12-22 13:44:27,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:44:27,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2659 states and 3824 transitions. [2020-12-22 13:44:27,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 13:44:27,817 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:44:27,818 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:44:27,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 13:44:27,818 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:44:27,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:44:27,819 INFO L82 PathProgramCache]: Analyzing trace with hash 439554233, now seen corresponding path program 1 times [2020-12-22 13:44:27,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:44:27,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705648628] [2020-12-22 13:44:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:44:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:44:28,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:44:28,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705648628] [2020-12-22 13:44:28,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:44:28,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:44:28,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054452102] [2020-12-22 13:44:28,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:44:28,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:44:28,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:44:28,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:44:28,054 INFO L87 Difference]: Start difference. First operand 2659 states and 3824 transitions. Second operand 5 states. [2020-12-22 13:44:30,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:44:30,653 INFO L93 Difference]: Finished difference Result 17772 states and 25673 transitions. [2020-12-22 13:44:30,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 13:44:30,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-12-22 13:44:30,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:44:30,698 INFO L225 Difference]: With dead ends: 17772 [2020-12-22 13:44:30,698 INFO L226 Difference]: Without dead ends: 15151 [2020-12-22 13:44:30,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:44:30,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15151 states. [2020-12-22 13:44:31,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15151 to 2662. [2020-12-22 13:44:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2662 states. [2020-12-22 13:44:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3827 transitions. [2020-12-22 13:44:31,247 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3827 transitions. Word has length 105 [2020-12-22 13:44:31,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:44:31,247 INFO L481 AbstractCegarLoop]: Abstraction has 2662 states and 3827 transitions. [2020-12-22 13:44:31,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:44:31,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3827 transitions. [2020-12-22 13:44:31,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 13:44:31,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:44:31,255 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:44:31,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 13:44:31,255 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:44:31,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:44:31,256 INFO L82 PathProgramCache]: Analyzing trace with hash 744467261, now seen corresponding path program 1 times [2020-12-22 13:44:31,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:44:31,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499808211] [2020-12-22 13:44:31,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:44:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:44:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:44:31,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499808211] [2020-12-22 13:44:31,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:44:31,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:44:31,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701589109] [2020-12-22 13:44:31,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:44:31,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:44:31,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:44:31,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:44:31,667 INFO L87 Difference]: Start difference. First operand 2662 states and 3827 transitions. Second operand 5 states. [2020-12-22 13:44:32,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:44:32,780 INFO L93 Difference]: Finished difference Result 7905 states and 11382 transitions. [2020-12-22 13:44:32,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:44:32,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-12-22 13:44:32,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:44:32,791 INFO L225 Difference]: With dead ends: 7905 [2020-12-22 13:44:32,791 INFO L226 Difference]: Without dead ends: 5271 [2020-12-22 13:44:32,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 13:44:32,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5271 states. [2020-12-22 13:44:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5271 to 2662. [2020-12-22 13:44:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2662 states. [2020-12-22 13:44:33,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3825 transitions. [2020-12-22 13:44:33,192 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3825 transitions. Word has length 107 [2020-12-22 13:44:33,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:44:33,193 INFO L481 AbstractCegarLoop]: Abstraction has 2662 states and 3825 transitions. [2020-12-22 13:44:33,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:44:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3825 transitions. [2020-12-22 13:44:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 13:44:33,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:44:33,199 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:44:33,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 13:44:33,199 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:44:33,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:44:33,200 INFO L82 PathProgramCache]: Analyzing trace with hash -706558720, now seen corresponding path program 1 times [2020-12-22 13:44:33,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:44:33,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620636913] [2020-12-22 13:44:33,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:44:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:44:35,043 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 47 [2020-12-22 13:44:35,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:44:35,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620636913] [2020-12-22 13:44:35,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:44:35,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2020-12-22 13:44:35,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814905243] [2020-12-22 13:44:35,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-22 13:44:35,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:44:35,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-22 13:44:35,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2020-12-22 13:44:35,834 INFO L87 Difference]: Start difference. First operand 2662 states and 3825 transitions. Second operand 28 states. [2020-12-22 13:46:26,508 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2020-12-22 13:46:33,894 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-12-22 13:46:35,055 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-12-22 13:46:39,888 WARN L197 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 127 [2020-12-22 13:46:43,018 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-12-22 13:46:44,578 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2020-12-22 13:46:46,043 WARN L197 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 125 [2020-12-22 13:46:51,301 WARN L197 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 129 [2020-12-22 13:46:51,630 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-12-22 13:46:56,167 WARN L197 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 127 [2020-12-22 13:47:02,029 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-12-22 13:47:02,175 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-12-22 13:47:13,635 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-12-22 13:47:13,797 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-12-22 13:47:15,618 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-12-22 13:47:21,785 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-12-22 13:47:34,730 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-12-22 13:47:34,922 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-22 13:47:35,155 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-12-22 13:47:36,030 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-12-22 13:47:36,201 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-22 13:47:37,916 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-12-22 13:47:46,312 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-12-22 13:47:46,551 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-12-22 13:47:47,404 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-12-22 13:47:47,578 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-12-22 13:47:57,285 WARN L197 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 113 [2020-12-22 13:47:57,894 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2020-12-22 13:47:58,649 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 78