/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem12_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:03:56,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:03:56,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:03:56,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:03:56,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:03:56,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:03:56,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:03:56,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:03:56,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:03:56,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:03:56,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:03:56,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:03:56,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:03:56,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:03:56,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:03:56,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:03:56,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:03:56,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:03:56,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:03:56,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:03:56,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:03:56,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:03:57,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:03:57,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:03:57,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:03:57,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:03:57,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:03:57,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:03:57,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:03:57,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:03:57,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:03:57,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:03:57,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:03:57,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:03:57,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:03:57,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:03:57,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:03:57,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:03:57,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:03:57,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:03:57,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:03:57,032 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 [2020-10-29 07:03:57,098 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:03:57,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:03:57,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:03:57,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:03:57,105 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:03:57,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:03:57,106 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:03:57,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:03:57,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:03:57,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:03:57,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:03:57,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:03:57,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:03:57,108 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:03:57,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:03:57,109 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:03:57,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:03:57,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:03:57,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:03:57,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:03:57,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:03:57,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:03:57,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:03:57,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:03:57,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:03:57,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:03:57,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:03:57,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:03:57,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:03:57,112 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:03:57,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:03:57,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:03:57,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:03:57,714 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:03:57,714 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:03:57,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label41.c [2020-10-29 07:03:57,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00486f99c/c6e2f75abcd8427980dffb63451cbcea/FLAG5386c0a7f [2020-10-29 07:03:58,992 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:03:58,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label41.c [2020-10-29 07:03:59,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00486f99c/c6e2f75abcd8427980dffb63451cbcea/FLAG5386c0a7f [2020-10-29 07:03:59,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00486f99c/c6e2f75abcd8427980dffb63451cbcea [2020-10-29 07:03:59,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:03:59,439 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:03:59,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:03:59,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:03:59,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:03:59,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:03:59" (1/1) ... [2020-10-29 07:03:59,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e463c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:03:59, skipping insertion in model container [2020-10-29 07:03:59,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:03:59" (1/1) ... [2020-10-29 07:03:59,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:03:59,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:04:01,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:04:01,245 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:04:01,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:04:01,978 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:04:01,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:01 WrapperNode [2020-10-29 07:04:01,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:04:01,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:04:01,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:04:01,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:04:01,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:01" (1/1) ... [2020-10-29 07:04:01,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:01" (1/1) ... [2020-10-29 07:04:02,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:01" (1/1) ... [2020-10-29 07:04:02,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:01" (1/1) ... [2020-10-29 07:04:02,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:01" (1/1) ... [2020-10-29 07:04:02,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:01" (1/1) ... [2020-10-29 07:04:02,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:01" (1/1) ... [2020-10-29 07:04:02,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:04:02,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:04:02,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:04:02,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:04:02,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:01" (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 [2020-10-29 07:04:02,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:04:02,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:04:02,432 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:04:02,433 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:04:02,433 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:04:02,433 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:04:02,433 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:04:02,433 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:04:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:04:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:04:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:04:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:04:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:04:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:04:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:04:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:04:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:04:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:04:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:04:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:04:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:04:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:04:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:04:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:04:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:04:09,168 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:04:09,169 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:04:09,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:04:09 BoogieIcfgContainer [2020-10-29 07:04:09,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:04:09,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:04:09,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:04:09,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:04:09,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:03:59" (1/3) ... [2020-10-29 07:04:09,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad2c722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:04:09, skipping insertion in model container [2020-10-29 07:04:09,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:01" (2/3) ... [2020-10-29 07:04:09,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad2c722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:04:09, skipping insertion in model container [2020-10-29 07:04:09,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:04:09" (3/3) ... [2020-10-29 07:04:09,190 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label41.c [2020-10-29 07:04:09,207 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:04:09,216 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:04:09,237 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:04:09,282 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:04:09,282 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:04:09,283 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:04:09,283 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:04:09,283 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:04:09,283 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:04:09,283 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:04:09,284 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:04:09,331 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 07:04:09,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 07:04:09,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:04:09,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:04:09,346 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:04:09,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:04:09,354 INFO L82 PathProgramCache]: Analyzing trace with hash -548545316, now seen corresponding path program 1 times [2020-10-29 07:04:09,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:04:09,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964463845] [2020-10-29 07:04:09,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:04:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:09,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:10,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:10,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 07:04:10,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:10,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 657 [2020-10-29 07:04:10,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:10,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:04:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:04:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 07:04:10,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:04:10,582 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:04:10,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:04:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:10,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:10,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:10,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:04:10,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:10,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 07:04:10,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:10,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:10,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:04:10,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:04:10,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:04:10,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:04:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:04:10,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964463845] [2020-10-29 07:04:10,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:04:10,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:04:10,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026720264] [2020-10-29 07:04:10,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:04:10,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:04:10,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:04:10,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:04:10,755 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-29 07:04:10,937 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:04:27,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:04:27,481 INFO L93 Difference]: Finished difference Result 3290 states and 6312 transitions. [2020-10-29 07:04:27,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:04:27,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-29 07:04:27,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:04:27,540 INFO L225 Difference]: With dead ends: 3290 [2020-10-29 07:04:27,540 INFO L226 Difference]: Without dead ends: 2347 [2020-10-29 07:04:27,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:04:27,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-10-29 07:04:27,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2332. [2020-10-29 07:04:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2020-10-29 07:04:27,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3488 transitions. [2020-10-29 07:04:27,828 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3488 transitions. Word has length 59 [2020-10-29 07:04:27,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:04:27,833 INFO L481 AbstractCegarLoop]: Abstraction has 2332 states and 3488 transitions. [2020-10-29 07:04:27,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:04:27,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3488 transitions. [2020-10-29 07:04:27,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-29 07:04:27,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:04:27,862 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:04:27,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:04:27,862 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:04:27,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:04:27,863 INFO L82 PathProgramCache]: Analyzing trace with hash 946720773, now seen corresponding path program 1 times [2020-10-29 07:04:27,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:04:27,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047986061] [2020-10-29 07:04:27,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:04:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:28,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:28,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:29,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:29,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:04:29,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:04:29,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1806 [2020-10-29 07:04:29,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:29,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:29,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:04:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:04:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:04:29,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:04:29,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:04:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:29,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:29,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:29,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:04:29,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:29,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:04:29,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:29,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:29,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:04:29,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:04:29,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:04:29,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:04:29,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:04:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:30,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:30,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:30,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:04:30,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:30,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 07:04:30,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:30,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:04:30,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:04:30,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:04:30,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:04:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:04:30,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047986061] [2020-10-29 07:04:30,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:04:30,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:04:30,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086787402] [2020-10-29 07:04:30,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:04:30,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:04:30,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:04:30,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:04:30,329 INFO L87 Difference]: Start difference. First operand 2332 states and 3488 transitions. Second operand 7 states. [2020-10-29 07:04:44,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:04:44,450 INFO L93 Difference]: Finished difference Result 7209 states and 11078 transitions. [2020-10-29 07:04:44,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:04:44,456 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-29 07:04:44,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:04:44,492 INFO L225 Difference]: With dead ends: 7209 [2020-10-29 07:04:44,492 INFO L226 Difference]: Without dead ends: 4883 [2020-10-29 07:04:44,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:04:44,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4883 states. [2020-10-29 07:04:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4883 to 4712. [2020-10-29 07:04:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4712 states. [2020-10-29 07:04:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4712 states to 4712 states and 6203 transitions. [2020-10-29 07:04:44,735 INFO L78 Accepts]: Start accepts. Automaton has 4712 states and 6203 transitions. Word has length 138 [2020-10-29 07:04:44,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:04:44,736 INFO L481 AbstractCegarLoop]: Abstraction has 4712 states and 6203 transitions. [2020-10-29 07:04:44,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:04:44,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4712 states and 6203 transitions. [2020-10-29 07:04:44,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-29 07:04:44,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:04:44,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:04:44,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:04:44,739 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:04:44,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:04:44,740 INFO L82 PathProgramCache]: Analyzing trace with hash -717960439, now seen corresponding path program 1 times [2020-10-29 07:04:44,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:04:44,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726761527] [2020-10-29 07:04:44,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:04:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:44,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:45,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:45,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:45,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 07:04:45,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:04:45,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1141 [2020-10-29 07:04:45,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:45,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:04:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:04:45,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:04:45,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:04:46,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:04:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:46,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:46,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:46,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:04:46,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:46,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:04:46,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:46,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:04:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:04:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:04:46,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:04:46,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:04:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:46,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:46,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:46,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:04:46,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:46,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-29 07:04:46,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:46,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:46,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:04:46,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:04:46,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 07:04:46,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:04:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:04:46,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726761527] [2020-10-29 07:04:46,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:04:46,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:04:46,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002127878] [2020-10-29 07:04:46,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:04:46,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:04:46,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:04:46,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:04:46,525 INFO L87 Difference]: Start difference. First operand 4712 states and 6203 transitions. Second operand 7 states. [2020-10-29 07:05:01,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:05:01,235 INFO L93 Difference]: Finished difference Result 14340 states and 19196 transitions. [2020-10-29 07:05:01,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:05:01,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-10-29 07:05:01,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:05:01,301 INFO L225 Difference]: With dead ends: 14340 [2020-10-29 07:05:01,301 INFO L226 Difference]: Without dead ends: 9634 [2020-10-29 07:05:01,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:05:01,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9634 states. [2020-10-29 07:05:01,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9634 to 9520. [2020-10-29 07:05:01,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9520 states. [2020-10-29 07:05:01,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9520 states to 9520 states and 11872 transitions. [2020-10-29 07:05:01,664 INFO L78 Accepts]: Start accepts. Automaton has 9520 states and 11872 transitions. Word has length 140 [2020-10-29 07:05:01,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:05:01,665 INFO L481 AbstractCegarLoop]: Abstraction has 9520 states and 11872 transitions. [2020-10-29 07:05:01,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:05:01,666 INFO L276 IsEmpty]: Start isEmpty. Operand 9520 states and 11872 transitions. [2020-10-29 07:05:01,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-29 07:05:01,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:05:01,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:05:01,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:05:01,676 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:05:01,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:05:01,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1210504311, now seen corresponding path program 1 times [2020-10-29 07:05:01,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:05:01,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924491411] [2020-10-29 07:05:01,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:05:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:01,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:02,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:03,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:03,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 07:05:03,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:05:03,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1442 [2020-10-29 07:05:03,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:03,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:03,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:05:03,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:05:03,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-29 07:05:03,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:03,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:05:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:03,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:03,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:03,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:05:03,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:03,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:05:03,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:03,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:05:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:05:03,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:03,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:05:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:03,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:03,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:03,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:03,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:05:03,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:05:03,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-29 07:05:03,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:03,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:03,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:05:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:05:03,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:05:04,090 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:05:04,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924491411] [2020-10-29 07:05:04,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:05:04,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:05:04,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508163543] [2020-10-29 07:05:04,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:05:04,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:05:04,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:05:04,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:05:04,093 INFO L87 Difference]: Start difference. First operand 9520 states and 11872 transitions. Second operand 5 states. [2020-10-29 07:05:18,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:05:18,012 INFO L93 Difference]: Finished difference Result 26174 states and 33859 transitions. [2020-10-29 07:05:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:05:18,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-29 07:05:18,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:05:18,114 INFO L225 Difference]: With dead ends: 26174 [2020-10-29 07:05:18,114 INFO L226 Difference]: Without dead ends: 17427 [2020-10-29 07:05:18,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:05:18,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17427 states. [2020-10-29 07:05:18,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17427 to 17425. [2020-10-29 07:05:18,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17425 states. [2020-10-29 07:05:18,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17425 states to 17425 states and 21353 transitions. [2020-10-29 07:05:18,649 INFO L78 Accepts]: Start accepts. Automaton has 17425 states and 21353 transitions. Word has length 204 [2020-10-29 07:05:18,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:05:18,650 INFO L481 AbstractCegarLoop]: Abstraction has 17425 states and 21353 transitions. [2020-10-29 07:05:18,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:05:18,650 INFO L276 IsEmpty]: Start isEmpty. Operand 17425 states and 21353 transitions. [2020-10-29 07:05:18,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-29 07:05:18,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:05:18,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:05:18,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:05:18,655 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:05:18,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:05:18,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1202896315, now seen corresponding path program 1 times [2020-10-29 07:05:18,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:05:18,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167444326] [2020-10-29 07:05:18,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:05:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:18,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:18,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:21,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:21,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 07:05:21,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:05:21,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2378 [2020-10-29 07:05:21,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:21,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:05:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:05:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:05:21,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:21,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:05:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:21,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:21,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:21,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:05:21,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:21,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:05:21,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:21,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:05:21,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:21,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:05:21,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:05:21,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:05:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:21,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:21,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:21,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:05:21,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:21,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-29 07:05:21,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:21,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:05:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:05:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:05:21,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:05:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:05:22,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167444326] [2020-10-29 07:05:22,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:05:22,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:05:22,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626764199] [2020-10-29 07:05:22,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:05:22,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:05:22,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:05:22,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:05:22,301 INFO L87 Difference]: Start difference. First operand 17425 states and 21353 transitions. Second operand 8 states. [2020-10-29 07:05:43,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:05:43,687 INFO L93 Difference]: Finished difference Result 35441 states and 43830 transitions. [2020-10-29 07:05:43,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 07:05:43,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 207 [2020-10-29 07:05:43,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:05:43,829 INFO L225 Difference]: With dead ends: 35441 [2020-10-29 07:05:43,830 INFO L226 Difference]: Without dead ends: 23479 [2020-10-29 07:05:43,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:05:43,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23479 states. [2020-10-29 07:05:44,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23479 to 23263. [2020-10-29 07:05:44,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23263 states. [2020-10-29 07:05:44,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23263 states to 23263 states and 28213 transitions. [2020-10-29 07:05:44,555 INFO L78 Accepts]: Start accepts. Automaton has 23263 states and 28213 transitions. Word has length 207 [2020-10-29 07:05:44,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:05:44,556 INFO L481 AbstractCegarLoop]: Abstraction has 23263 states and 28213 transitions. [2020-10-29 07:05:44,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:05:44,557 INFO L276 IsEmpty]: Start isEmpty. Operand 23263 states and 28213 transitions. [2020-10-29 07:05:44,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-29 07:05:44,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:05:44,565 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:05:44,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:05:44,566 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:05:44,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:05:44,567 INFO L82 PathProgramCache]: Analyzing trace with hash 2145165384, now seen corresponding path program 1 times [2020-10-29 07:05:44,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:05:44,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807516698] [2020-10-29 07:05:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:05:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:44,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:45,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:45,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:46,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:46,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-29 07:05:46,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:05:46,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2038 [2020-10-29 07:05:46,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:46,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:46,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:05:46,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:05:46,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 07:05:46,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:46,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:05:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:46,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:46,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:46,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:05:46,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:46,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:05:46,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:46,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:46,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:05:46,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:46,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:05:46,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:05:46,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:05:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:46,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:47,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:47,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:05:47,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:47,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 07:05:47,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:47,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:05:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:05:47,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:05:47,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:05:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:47,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:47,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:47,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 07:05:47,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:47,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-29 07:05:47,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:47,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:47,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:05:47,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:05:47,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:05:47,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:05:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:05:47,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807516698] [2020-10-29 07:05:47,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:05:47,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:05:47,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221276444] [2020-10-29 07:05:47,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:05:47,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:05:47,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:05:47,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:05:47,560 INFO L87 Difference]: Start difference. First operand 23263 states and 28213 transitions. Second operand 7 states. [2020-10-29 07:06:08,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:06:08,592 INFO L93 Difference]: Finished difference Result 51787 states and 64883 transitions. [2020-10-29 07:06:08,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:06:08,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-10-29 07:06:08,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:06:08,684 INFO L225 Difference]: With dead ends: 51787 [2020-10-29 07:06:08,685 INFO L226 Difference]: Without dead ends: 23623 [2020-10-29 07:06:08,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:06:08,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23623 states. [2020-10-29 07:06:09,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23623 to 21851. [2020-10-29 07:06:09,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21851 states. [2020-10-29 07:06:09,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21851 states to 21851 states and 25534 transitions. [2020-10-29 07:06:09,238 INFO L78 Accepts]: Start accepts. Automaton has 21851 states and 25534 transitions. Word has length 247 [2020-10-29 07:06:09,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:06:09,239 INFO L481 AbstractCegarLoop]: Abstraction has 21851 states and 25534 transitions. [2020-10-29 07:06:09,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:06:09,239 INFO L276 IsEmpty]: Start isEmpty. Operand 21851 states and 25534 transitions. [2020-10-29 07:06:09,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-29 07:06:09,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:06:09,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:06:09,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:06:09,246 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:06:09,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:06:09,248 INFO L82 PathProgramCache]: Analyzing trace with hash 377773324, now seen corresponding path program 1 times [2020-10-29 07:06:09,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:06:09,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053097677] [2020-10-29 07:06:09,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:06:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:09,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:09,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:10,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:10,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:10,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-29 07:06:10,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:06:10,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1590 [2020-10-29 07:06:10,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:10,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:06:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 07:06:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 07:06:10,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:11,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:06:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:11,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:11,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:06:11,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:11,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:06:11,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:11,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:06:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:11,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:06:11,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:11,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:06:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:11,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:11,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:11,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:06:11,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:11,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 07:06:11,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:11,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:11,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:06:11,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:11,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:06:11,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:11,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:06:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:11,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:11,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:11,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:11,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:06:11,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:06:11,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-29 07:06:11,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:11,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:11,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:06:11,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:06:11,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:06:11,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 135 proven. 51 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:06:12,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053097677] [2020-10-29 07:06:12,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:06:12,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:06:12,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944159073] [2020-10-29 07:06:12,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:06:12,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:06:12,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:06:12,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:06:12,062 INFO L87 Difference]: Start difference. First operand 21851 states and 25534 transitions. Second operand 8 states. [2020-10-29 07:06:42,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:06:42,311 INFO L93 Difference]: Finished difference Result 80727 states and 99358 transitions. [2020-10-29 07:06:42,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:06:42,313 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 293 [2020-10-29 07:06:42,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:06:42,519 INFO L225 Difference]: With dead ends: 80727 [2020-10-29 07:06:42,519 INFO L226 Difference]: Without dead ends: 58882 [2020-10-29 07:06:42,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:06:42,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58882 states. [2020-10-29 07:06:43,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58882 to 54132. [2020-10-29 07:06:43,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54132 states. [2020-10-29 07:06:44,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54132 states to 54132 states and 66673 transitions. [2020-10-29 07:06:44,089 INFO L78 Accepts]: Start accepts. Automaton has 54132 states and 66673 transitions. Word has length 293 [2020-10-29 07:06:44,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:06:44,090 INFO L481 AbstractCegarLoop]: Abstraction has 54132 states and 66673 transitions. [2020-10-29 07:06:44,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:06:44,090 INFO L276 IsEmpty]: Start isEmpty. Operand 54132 states and 66673 transitions. [2020-10-29 07:06:44,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-29 07:06:44,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:06:44,096 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:06:44,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:06:44,097 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:06:44,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:06:44,098 INFO L82 PathProgramCache]: Analyzing trace with hash -2139549692, now seen corresponding path program 1 times [2020-10-29 07:06:44,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:06:44,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343518650] [2020-10-29 07:06:44,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:06:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:44,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:44,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:44,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:46,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:46,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-29 07:06:46,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:06:46,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2784 [2020-10-29 07:06:46,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:46,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:06:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 07:06:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 07:06:46,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:47,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:06:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:47,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:47,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:47,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:06:47,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:47,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:06:47,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:47,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:47,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:06:47,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:47,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:06:47,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:47,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:06:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:47,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:47,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:47,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:06:47,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:47,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 07:06:47,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:47,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:06:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 07:06:47,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:47,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:06:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:47,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:47,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:47,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:47,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:06:47,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:06:47,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 07:06:47,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:47,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:47,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:06:47,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:06:47,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:06:47,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 135 proven. 51 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:06:47,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343518650] [2020-10-29 07:06:47,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:06:47,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:06:47,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796004910] [2020-10-29 07:06:47,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:06:47,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:06:47,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:06:47,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:06:47,770 INFO L87 Difference]: Start difference. First operand 54132 states and 66673 transitions. Second operand 6 states. [2020-10-29 07:07:04,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:07:04,364 INFO L93 Difference]: Finished difference Result 129001 states and 163984 transitions. [2020-10-29 07:07:04,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:07:04,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 297 [2020-10-29 07:07:04,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:07:04,650 INFO L225 Difference]: With dead ends: 129001 [2020-10-29 07:07:04,650 INFO L226 Difference]: Without dead ends: 74875 [2020-10-29 07:07:04,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:07:04,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74875 states. [2020-10-29 07:07:06,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74875 to 73212. [2020-10-29 07:07:06,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73212 states. [2020-10-29 07:07:07,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73212 states to 73212 states and 89563 transitions. [2020-10-29 07:07:07,370 INFO L78 Accepts]: Start accepts. Automaton has 73212 states and 89563 transitions. Word has length 297 [2020-10-29 07:07:07,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:07:07,371 INFO L481 AbstractCegarLoop]: Abstraction has 73212 states and 89563 transitions. [2020-10-29 07:07:07,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:07:07,371 INFO L276 IsEmpty]: Start isEmpty. Operand 73212 states and 89563 transitions. [2020-10-29 07:07:07,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-10-29 07:07:07,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:07:07,391 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:07:07,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:07:07,391 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:07:07,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:07:07,392 INFO L82 PathProgramCache]: Analyzing trace with hash 573201364, now seen corresponding path program 1 times [2020-10-29 07:07:07,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:07:07,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341265022] [2020-10-29 07:07:07,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:07:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:07,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:08,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:08,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:12,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:12,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:12,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:12,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 490 [2020-10-29 07:07:12,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:07:12,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4918 [2020-10-29 07:07:12,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:12,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:12,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:07:12,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-29 07:07:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-29 07:07:12,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:12,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:07:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:12,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:12,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:12,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:07:12,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:12,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:07:12,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:12,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:12,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:07:12,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:12,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:07:12,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:12,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:07:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:12,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:12,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:12,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:07:12,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:12,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:07:12,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:12,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:12,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:07:12,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:12,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:07:12,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:12,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:07:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:12,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:12,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:12,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:07:12,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:12,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 07:07:12,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:12,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:12,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:07:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:12,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:07:12,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:13,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-29 07:07:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:13,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:13,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:13,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:13,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 07:07:13,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:07:13,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 07:07:13,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:13,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:13,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:07:13,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:13,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 07:07:13,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:13,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-29 07:07:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:13,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:13,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:13,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:07:13,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:13,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 07:07:13,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:13,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:07:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:07:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:07:13,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 413 proven. 4 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-29 07:07:13,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341265022] [2020-10-29 07:07:13,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:07:13,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:07:13,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034081698] [2020-10-29 07:07:13,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:07:13,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:07:13,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:07:13,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:07:13,619 INFO L87 Difference]: Start difference. First operand 73212 states and 89563 transitions. Second operand 7 states.