/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:48:34,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:48:34,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:48:34,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:48:34,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:48:34,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:48:34,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:48:34,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:48:34,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:48:34,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:48:34,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:48:34,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:48:34,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:48:34,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:48:34,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:48:34,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:48:34,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:48:34,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:48:34,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:48:34,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:48:34,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:48:34,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:48:34,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:48:34,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:48:34,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:48:34,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:48:34,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:48:34,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:48:34,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:48:34,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:48:34,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:48:34,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:48:34,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:48:34,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:48:35,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:48:35,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:48:35,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:48:35,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:48:35,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:48:35,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:48:35,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:48:35,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 10:48:35,065 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:48:35,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:48:35,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:48:35,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:48:35,072 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:48:35,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:48:35,073 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:48:35,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:48:35,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:48:35,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:48:35,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:48:35,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:48:35,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:48:35,076 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:48:35,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:48:35,076 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:48:35,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:48:35,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:48:35,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:48:35,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:48:35,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:48:35,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:48:35,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:48:35,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:48:35,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:48:35,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:48:35,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:48:35,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:48:35,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:48:35,080 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-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:48:35,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:48:35,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:48:35,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:48:35,588 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:48:35,589 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:48:35,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label39.c [2020-10-28 10:48:35,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1eb51e3/561ddb2f9c0048d48c239faeec3fbcbe/FLAGa1864e3f4 [2020-10-28 10:48:36,990 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:48:36,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label39.c [2020-10-28 10:48:37,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1eb51e3/561ddb2f9c0048d48c239faeec3fbcbe/FLAGa1864e3f4 [2020-10-28 10:48:37,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1eb51e3/561ddb2f9c0048d48c239faeec3fbcbe [2020-10-28 10:48:37,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:48:37,270 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:48:37,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:48:37,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:48:37,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:48:37,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:48:37" (1/1) ... [2020-10-28 10:48:37,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b9d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:37, skipping insertion in model container [2020-10-28 10:48:37,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:48:37" (1/1) ... [2020-10-28 10:48:37,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:48:37,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:48:39,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:48:39,962 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:48:41,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:48:41,269 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:48:41,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41 WrapperNode [2020-10-28 10:48:41,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:48:41,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:48:41,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:48:41,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:48:41,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ... [2020-10-28 10:48:41,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ... [2020-10-28 10:48:41,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ... [2020-10-28 10:48:41,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ... [2020-10-28 10:48:41,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ... [2020-10-28 10:48:41,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ... [2020-10-28 10:48:41,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ... [2020-10-28 10:48:41,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:48:41,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:48:41,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:48:41,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:48:41,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-28 10:48:41,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:48:41,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:48:41,874 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:48:41,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:48:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:48:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:48:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:48:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 10:48:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 10:48:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-28 10:48:41,876 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-28 10:48:41,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:48:41,877 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:48:41,877 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:48:41,877 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:48:41,878 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:48:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 10:48:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 10:48:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-28 10:48:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-28 10:48:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:48:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:48:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:48:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:48:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:48:41,976 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:48:41,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:48:41,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:48:41,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:48:41,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:48:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:48:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:48:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:48:50,392 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:48:50,392 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:48:50,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:48:50 BoogieIcfgContainer [2020-10-28 10:48:50,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:48:50,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:48:50,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:48:50,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:48:50,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:48:37" (1/3) ... [2020-10-28 10:48:50,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690ba71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:48:50, skipping insertion in model container [2020-10-28 10:48:50,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:41" (2/3) ... [2020-10-28 10:48:50,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690ba71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:48:50, skipping insertion in model container [2020-10-28 10:48:50,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:48:50" (3/3) ... [2020-10-28 10:48:50,410 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label39.c [2020-10-28 10:48:50,424 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:48:50,431 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:48:50,446 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:48:50,486 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:48:50,487 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:48:50,487 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:48:50,487 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:48:50,487 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:48:50,487 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:48:50,488 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:48:50,488 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:48:50,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-28 10:48:50,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1665 [2020-10-28 10:48:50,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:48:50,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:48:50,718 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:48:50,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:48:50,734 INFO L82 PathProgramCache]: Analyzing trace with hash 2005052167, now seen corresponding path program 1 times [2020-10-28 10:48:50,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:48:50,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792134637] [2020-10-28 10:48:50,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:48:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:48:52,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:48:57,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:48:57,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1688 [2020-10-28 10:48:57,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:48:57,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-28 10:48:57,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:48:57,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:48:57,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 10:48:57,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:48:57,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1679 [2020-10-28 10:48:57,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:48:59,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:48:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:48:59,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:48:59,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:48:59,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:48:59,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:48:59,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-28 10:48:59,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:48:59,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:48:59,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:48:59,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:48:59,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:48:59,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:49:02,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:49:02,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792134637] [2020-10-28 10:49:02,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:49:02,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:49:02,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597264568] [2020-10-28 10:49:02,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:49:02,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:49:02,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:49:02,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:49:02,070 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-28 10:49:22,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:49:22,271 INFO L93 Difference]: Finished difference Result 6365 states and 11967 transitions. [2020-10-28 10:49:22,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:49:22,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1664 [2020-10-28 10:49:22,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:49:22,324 INFO L225 Difference]: With dead ends: 6365 [2020-10-28 10:49:22,324 INFO L226 Difference]: Without dead ends: 4075 [2020-10-28 10:49:22,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:49:22,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2020-10-28 10:49:22,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4005. [2020-10-28 10:49:22,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4005 states. [2020-10-28 10:49:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 6505 transitions. [2020-10-28 10:49:22,549 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 6505 transitions. Word has length 1664 [2020-10-28 10:49:22,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:49:22,553 INFO L481 AbstractCegarLoop]: Abstraction has 4005 states and 6505 transitions. [2020-10-28 10:49:22,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:49:22,553 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 6505 transitions. [2020-10-28 10:49:22,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1676 [2020-10-28 10:49:22,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:49:22,680 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:49:22,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:49:22,681 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:49:22,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:49:22,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1945649153, now seen corresponding path program 1 times [2020-10-28 10:49:22,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:49:22,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282929326] [2020-10-28 10:49:22,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:49:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:49:23,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:49:24,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:49:28,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:49:28,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1701 [2020-10-28 10:49:28,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:49:28,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-28 10:49:28,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:49:28,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:49:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:49:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:49:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:49:28,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:49:29,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:49:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:49:29,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:49:29,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:49:29,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:49:29,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:49:29,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 10:49:29,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:49:29,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:49:29,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:49:29,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:49:29,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:49:29,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:49:29,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:49:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:49:29,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:49:29,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:49:29,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:49:29,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:49:29,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 10:49:29,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:49:29,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:49:29,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:49:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:49:29,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:49:29,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:49:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:49:30,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282929326] [2020-10-28 10:49:30,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:49:30,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:49:30,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364682006] [2020-10-28 10:49:30,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:49:30,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:49:30,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:49:30,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:49:30,733 INFO L87 Difference]: Start difference. First operand 4005 states and 6505 transitions. Second operand 8 states. [2020-10-28 10:50:08,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:50:08,434 INFO L93 Difference]: Finished difference Result 15310 states and 25273 transitions. [2020-10-28 10:50:08,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 10:50:08,436 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1675 [2020-10-28 10:50:08,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:50:08,495 INFO L225 Difference]: With dead ends: 15310 [2020-10-28 10:50:08,496 INFO L226 Difference]: Without dead ends: 11311 [2020-10-28 10:50:08,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-28 10:50:08,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11311 states. [2020-10-28 10:50:08,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11311 to 11207. [2020-10-28 10:50:08,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11207 states. [2020-10-28 10:50:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11207 states to 11207 states and 15030 transitions. [2020-10-28 10:50:08,818 INFO L78 Accepts]: Start accepts. Automaton has 11207 states and 15030 transitions. Word has length 1675 [2020-10-28 10:50:08,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:50:08,819 INFO L481 AbstractCegarLoop]: Abstraction has 11207 states and 15030 transitions. [2020-10-28 10:50:08,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:50:08,819 INFO L276 IsEmpty]: Start isEmpty. Operand 11207 states and 15030 transitions. [2020-10-28 10:50:08,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1687 [2020-10-28 10:50:08,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:50:08,945 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:50:08,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:50:08,945 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:50:08,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:50:08,950 INFO L82 PathProgramCache]: Analyzing trace with hash -2042573432, now seen corresponding path program 1 times [2020-10-28 10:50:08,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:50:08,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174503038] [2020-10-28 10:50:08,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:50:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:50:09,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:09,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:14,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:50:14,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1712 [2020-10-28 10:50:14,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:50:14,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-28 10:50:14,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:50:14,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:50:14,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:50:14,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:50:14,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 10:50:14,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:50:15,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:50:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:50:15,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:15,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:50:15,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:50:15,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:50:15,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:50:15,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:50:15,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:50:15,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:50:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:50:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:50:15,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:50:15,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:50:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:50:15,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:15,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:50:15,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 10:50:15,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:50:15,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 10:50:15,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:50:15,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:50:15,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:50:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:50:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:50:15,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:50:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:50:16,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174503038] [2020-10-28 10:50:16,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:50:16,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:50:16,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33786577] [2020-10-28 10:50:16,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:50:16,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:50:16,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:50:16,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:50:16,607 INFO L87 Difference]: Start difference. First operand 11207 states and 15030 transitions. Second operand 7 states. [2020-10-28 10:50:44,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:50:44,037 INFO L93 Difference]: Finished difference Result 28801 states and 39477 transitions. [2020-10-28 10:50:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 10:50:44,048 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1686 [2020-10-28 10:50:44,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:50:44,139 INFO L225 Difference]: With dead ends: 28801 [2020-10-28 10:50:44,139 INFO L226 Difference]: Without dead ends: 17600 [2020-10-28 10:50:44,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:50:44,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17600 states. [2020-10-28 10:50:44,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17600 to 17101. [2020-10-28 10:50:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17101 states. [2020-10-28 10:50:44,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17101 states to 17101 states and 22184 transitions. [2020-10-28 10:50:44,741 INFO L78 Accepts]: Start accepts. Automaton has 17101 states and 22184 transitions. Word has length 1686 [2020-10-28 10:50:44,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:50:44,742 INFO L481 AbstractCegarLoop]: Abstraction has 17101 states and 22184 transitions. [2020-10-28 10:50:44,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:50:44,743 INFO L276 IsEmpty]: Start isEmpty. Operand 17101 states and 22184 transitions. [2020-10-28 10:50:44,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1697 [2020-10-28 10:50:44,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:50:44,843 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:50:44,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:50:44,844 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:50:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:50:44,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1082280973, now seen corresponding path program 1 times [2020-10-28 10:50:44,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:50:44,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76917815] [2020-10-28 10:50:44,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:50:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:50:45,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:47,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:50,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:50:50,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1722 [2020-10-28 10:50:50,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:50:50,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5168 [2020-10-28 10:50:50,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:50:50,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:50:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:50:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:50:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 10:50:50,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:50:50,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:50:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:50:50,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:50,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:50:50,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:50:50,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:50:50,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:50:50,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:50:50,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:50:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:50:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:50:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:50:50,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:50:50,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:50:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:50:50,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:50:50,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:50:50,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:50:50,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:50:50,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 10:50:50,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:50:50,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:50:50,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:50:50,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:50:50,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 10:50:50,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:50:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:50:52,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76917815] [2020-10-28 10:50:52,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:50:52,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:50:52,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820093316] [2020-10-28 10:50:52,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:50:52,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:50:52,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:50:52,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:50:52,316 INFO L87 Difference]: Start difference. First operand 17101 states and 22184 transitions. Second operand 7 states. [2020-10-28 10:51:19,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:51:19,473 INFO L93 Difference]: Finished difference Result 45547 states and 61227 transitions. [2020-10-28 10:51:19,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 10:51:19,474 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1696 [2020-10-28 10:51:19,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:51:19,605 INFO L225 Difference]: With dead ends: 45547 [2020-10-28 10:51:19,605 INFO L226 Difference]: Without dead ends: 28452 [2020-10-28 10:51:19,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:51:19,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28452 states. [2020-10-28 10:51:20,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28452 to 28351. [2020-10-28 10:51:20,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28351 states. [2020-10-28 10:51:20,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28351 states to 28351 states and 36110 transitions. [2020-10-28 10:51:20,448 INFO L78 Accepts]: Start accepts. Automaton has 28351 states and 36110 transitions. Word has length 1696 [2020-10-28 10:51:20,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:51:20,449 INFO L481 AbstractCegarLoop]: Abstraction has 28351 states and 36110 transitions. [2020-10-28 10:51:20,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:51:20,449 INFO L276 IsEmpty]: Start isEmpty. Operand 28351 states and 36110 transitions. [2020-10-28 10:51:20,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1778 [2020-10-28 10:51:20,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:51:20,571 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:51:20,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:51:20,571 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:51:20,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:51:20,573 INFO L82 PathProgramCache]: Analyzing trace with hash 204838605, now seen corresponding path program 1 times [2020-10-28 10:51:20,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:51:20,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363004955] [2020-10-28 10:51:20,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:51:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:51:21,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:22,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:26,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:51:26,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1803 [2020-10-28 10:51:26,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:51:26,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 10:51:26,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:51:26,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:51:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 10:51:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:51:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1794 [2020-10-28 10:51:26,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:51:27,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:51:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:51:27,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:27,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:51:27,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:51:27,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:51:27,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:51:27,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:51:27,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:51:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:51:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:51:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:51:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:51:27,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:51:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:51:27,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:27,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:51:27,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:51:27,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:51:27,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:51:27,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-28 10:51:27,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:51:27,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:51:27,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:51:27,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:51:27,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 10:51:27,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:51:30,127 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 106 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 10:51:30,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363004955] [2020-10-28 10:51:30,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:51:30,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:51:30,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214909802] [2020-10-28 10:51:30,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:51:30,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:51:30,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:51:30,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:51:30,133 INFO L87 Difference]: Start difference. First operand 28351 states and 36110 transitions. Second operand 5 states. [2020-10-28 10:51:57,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:51:57,999 INFO L93 Difference]: Finished difference Result 83529 states and 110278 transitions. [2020-10-28 10:51:58,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:51:58,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1777 [2020-10-28 10:51:58,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:51:58,206 INFO L225 Difference]: With dead ends: 83529 [2020-10-28 10:51:58,207 INFO L226 Difference]: Without dead ends: 55184 [2020-10-28 10:51:58,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:51:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55184 states. [2020-10-28 10:51:59,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55184 to 51639. [2020-10-28 10:51:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51639 states. [2020-10-28 10:51:59,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51639 states to 51639 states and 64877 transitions. [2020-10-28 10:51:59,884 INFO L78 Accepts]: Start accepts. Automaton has 51639 states and 64877 transitions. Word has length 1777 [2020-10-28 10:51:59,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:51:59,887 INFO L481 AbstractCegarLoop]: Abstraction has 51639 states and 64877 transitions. [2020-10-28 10:51:59,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:51:59,887 INFO L276 IsEmpty]: Start isEmpty. Operand 51639 states and 64877 transitions. [2020-10-28 10:52:00,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1800 [2020-10-28 10:52:00,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:52:00,068 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:52:00,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:52:00,069 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:52:00,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:52:00,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1820458802, now seen corresponding path program 1 times [2020-10-28 10:52:00,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:52:00,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31345130] [2020-10-28 10:52:00,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:52:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:01,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:02,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:05,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:05,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1827 [2020-10-28 10:52:05,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:52:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-28 10:52:05,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:05,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:05,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:52:05,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-28 10:52:05,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 10:52:05,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:52:06,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:52:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:06,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:06,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:06,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:52:06,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:52:06,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:52:06,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:06,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:06,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:52:06,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:52:06,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:52:06,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:52:06,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:52:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:06,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:06,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:06,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:52:06,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:52:06,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 10:52:06,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:06,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:06,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:52:06,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:52:06,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 10:52:06,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:52:06,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 10:52:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:06,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:06,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:06,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 10:52:06,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:52:06,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 10:52:06,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:06,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:06,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:52:06,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:52:06,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:52:06,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:52:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:52:08,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31345130] [2020-10-28 10:52:08,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:52:08,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:52:08,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355781340] [2020-10-28 10:52:08,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:52:08,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:52:08,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:52:08,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:52:08,312 INFO L87 Difference]: Start difference. First operand 51639 states and 64877 transitions. Second operand 8 states.