/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=SHALLOWEST --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/Problem13_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:04:58,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:04:58,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:04:58,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:04:58,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:04:58,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:04:58,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:04:58,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:04:58,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:04:58,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:04:58,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:04:58,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:04:58,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:04:58,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:04:58,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:04:58,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:04:58,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:04:58,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:04:58,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:04:58,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:04:58,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:04:58,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:04:58,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:04:58,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:04:58,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:04:58,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:04:58,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:04:58,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:04:58,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:04:58,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:04:58,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:04:58,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:04:58,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:04:58,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:04:58,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:04:58,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:04:58,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:04:58,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:04:58,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:04:58,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:04:58,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:04:58,950 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 [2020-10-26 23:04:59,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:04:59,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:04:59,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:04:59,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:04:59,010 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:04:59,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:04:59,010 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:04:59,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:04:59,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:04:59,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:04:59,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:04:59,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:04:59,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:04:59,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:04:59,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:04:59,013 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:04:59,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:04:59,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:04:59,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:04:59,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:04:59,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:04:59,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:04:59,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:04:59,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:04:59,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:04:59,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:04:59,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:04:59,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:04:59,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:04:59,016 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:04:59,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:04:59,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:04:59,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:04:59,502 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:04:59,503 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:04:59,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09.c [2020-10-26 23:04:59,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c8bac95d/796c87a68bbd405ca48ce4b56b81cb16/FLAG862523e24 [2020-10-26 23:05:00,830 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:05:00,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label09.c [2020-10-26 23:05:00,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c8bac95d/796c87a68bbd405ca48ce4b56b81cb16/FLAG862523e24 [2020-10-26 23:05:01,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c8bac95d/796c87a68bbd405ca48ce4b56b81cb16 [2020-10-26 23:05:01,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:05:01,186 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:05:01,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:05:01,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:05:01,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:05:01,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:05:01" (1/1) ... [2020-10-26 23:05:01,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376c3dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:05:01, skipping insertion in model container [2020-10-26 23:05:01,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:05:01" (1/1) ... [2020-10-26 23:05:01,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:05:01,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:05:03,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:05:03,287 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:05:04,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:05:04,210 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:05:04,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:05:04 WrapperNode [2020-10-26 23:05:04,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:05:04,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:05:04,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:05:04,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:05:04,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:05:04" (1/1) ... [2020-10-26 23:05:04,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:05:04" (1/1) ... [2020-10-26 23:05:04,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:05:04" (1/1) ... [2020-10-26 23:05:04,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:05:04" (1/1) ... [2020-10-26 23:05:04,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:05:04" (1/1) ... [2020-10-26 23:05:04,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:05:04" (1/1) ... [2020-10-26 23:05:04,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:05:04" (1/1) ... [2020-10-26 23:05:04,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:05:04,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:05:04,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:05:04,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:05:04,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:05:04" (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 [2020-10-26 23:05:04,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:05:04,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:05:04,995 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:05:04,995 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:05:04,997 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:05:04,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 23:05:04,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 23:05:04,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:05:04,998 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:05:04,998 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:05:04,999 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 23:05:05,000 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 23:05:05,000 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:05:05,000 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:05:05,002 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:05:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:05:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:05:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:05:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:05:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:05:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:05:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:05:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:05:05,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:05:05,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:05:18,577 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:05:18,577 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:05:18,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:05:18 BoogieIcfgContainer [2020-10-26 23:05:18,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:05:18,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:05:18,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:05:18,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:05:18,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:05:01" (1/3) ... [2020-10-26 23:05:18,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253f2371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:05:18, skipping insertion in model container [2020-10-26 23:05:18,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:05:04" (2/3) ... [2020-10-26 23:05:18,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253f2371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:05:18, skipping insertion in model container [2020-10-26 23:05:18,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:05:18" (3/3) ... [2020-10-26 23:05:18,605 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label09.c [2020-10-26 23:05:18,623 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:05:18,631 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:05:18,650 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:05:18,719 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:05:18,719 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:05:18,719 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:05:18,719 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:05:18,719 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:05:18,720 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:05:18,720 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:05:18,720 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:05:18,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-26 23:05:18,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-26 23:05:18,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:05:18,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:05:18,779 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:05:18,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:05:18,787 INFO L82 PathProgramCache]: Analyzing trace with hash 780075362, now seen corresponding path program 1 times [2020-10-26 23:05:18,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:05:18,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259869269] [2020-10-26 23:05:18,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:05:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:05:19,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:05:19,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:05:19,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:05:19,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:05:19,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-10-26 23:05:19,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:05:19,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:05:19,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:05:19,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-26 23:05:19,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:05:19,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:05:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:05:19,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:05:20,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:05:20,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:05:20,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:05:20,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:05:20,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:05:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:05:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:05:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:05:20,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:05:20,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:05:20,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259869269] [2020-10-26 23:05:20,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:05:20,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:05:20,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615427395] [2020-10-26 23:05:20,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:05:20,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:05:20,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:05:20,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:05:20,084 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-26 23:05:20,299 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:05:40,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:05:40,263 INFO L93 Difference]: Finished difference Result 3235 states and 5915 transitions. [2020-10-26 23:05:40,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:05:40,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-26 23:05:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:05:40,321 INFO L225 Difference]: With dead ends: 3235 [2020-10-26 23:05:40,322 INFO L226 Difference]: Without dead ends: 2027 [2020-10-26 23:05:40,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:05:40,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-10-26 23:05:40,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2010. [2020-10-26 23:05:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-26 23:05:40,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3292 transitions. [2020-10-26 23:05:40,613 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3292 transitions. Word has length 67 [2020-10-26 23:05:40,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:05:40,615 INFO L481 AbstractCegarLoop]: Abstraction has 2010 states and 3292 transitions. [2020-10-26 23:05:40,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:05:40,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3292 transitions. [2020-10-26 23:05:40,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-26 23:05:40,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:05:40,623 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:05:40,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:05:40,624 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:05:40,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:05:40,625 INFO L82 PathProgramCache]: Analyzing trace with hash 231086441, now seen corresponding path program 1 times [2020-10-26 23:05:40,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:05:40,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314518439] [2020-10-26 23:05:40,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:05:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:05:40,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:05:40,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:05:42,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:05:43,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:05:43,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 23:05:43,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:05:43,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3025 [2020-10-26 23:05:43,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:05:43,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:05:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:05:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:05:43,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 23:05:43,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:05:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:05:43,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:05:43,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:05:43,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:05:43,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:05:43,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:05:43,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:05:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:05:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:05:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:05:43,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-26 23:05:43,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:05:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:05:44,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:05:44,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:05:44,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 23:05:44,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:05:44,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-26 23:05:44,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:05:44,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:05:44,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:05:44,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:05:44,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:05:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:05:44,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314518439] [2020-10-26 23:05:44,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:05:44,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:05:44,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814754208] [2020-10-26 23:05:44,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:05:44,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:05:44,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:05:44,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:05:44,424 INFO L87 Difference]: Start difference. First operand 2010 states and 3292 transitions. Second operand 7 states. [2020-10-26 23:06:11,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:06:11,228 INFO L93 Difference]: Finished difference Result 5803 states and 9567 transitions. [2020-10-26 23:06:11,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:06:11,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-26 23:06:11,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:06:11,270 INFO L225 Difference]: With dead ends: 5803 [2020-10-26 23:06:11,270 INFO L226 Difference]: Without dead ends: 3799 [2020-10-26 23:06:11,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:06:11,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3799 states. [2020-10-26 23:06:11,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3799 to 3722. [2020-10-26 23:06:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3722 states. [2020-10-26 23:06:11,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5302 transitions. [2020-10-26 23:06:11,430 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5302 transitions. Word has length 142 [2020-10-26 23:06:11,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:06:11,433 INFO L481 AbstractCegarLoop]: Abstraction has 3722 states and 5302 transitions. [2020-10-26 23:06:11,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:06:11,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5302 transitions. [2020-10-26 23:06:11,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-26 23:06:11,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:06:11,449 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:06:11,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:06:11,450 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:06:11,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:06:11,451 INFO L82 PathProgramCache]: Analyzing trace with hash -242630907, now seen corresponding path program 1 times [2020-10-26 23:06:11,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:06:11,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108953109] [2020-10-26 23:06:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:06:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:06:11,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:06:11,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:06:12,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:06:12,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-26 23:06:12,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:06:12,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1141 [2020-10-26 23:06:12,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:06:12,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:06:12,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:06:12,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:06:12,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:06:12,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:06:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:06:12,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:06:12,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:06:12,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:06:12,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:06:12,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:06:12,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:06:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:06:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:06:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:06:12,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:06:12,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:06:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:06:12,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:06:13,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:06:13,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-26 23:06:13,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:06:13,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-26 23:06:13,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:06:13,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:06:13,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:06:13,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:06:13,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:06:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:06:13,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108953109] [2020-10-26 23:06:13,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:06:13,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:06:13,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776434113] [2020-10-26 23:06:13,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:06:13,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:06:13,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:06:13,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:06:13,409 INFO L87 Difference]: Start difference. First operand 3722 states and 5302 transitions. Second operand 8 states. [2020-10-26 23:06:48,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:06:48,325 INFO L93 Difference]: Finished difference Result 14332 states and 21008 transitions. [2020-10-26 23:06:48,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:06:48,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 172 [2020-10-26 23:06:48,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:06:48,404 INFO L225 Difference]: With dead ends: 14332 [2020-10-26 23:06:48,405 INFO L226 Difference]: Without dead ends: 10616 [2020-10-26 23:06:48,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:06:48,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10616 states. [2020-10-26 23:06:48,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10616 to 10528. [2020-10-26 23:06:48,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10528 states. [2020-10-26 23:06:48,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 14144 transitions. [2020-10-26 23:06:48,849 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 14144 transitions. Word has length 172 [2020-10-26 23:06:48,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:06:48,850 INFO L481 AbstractCegarLoop]: Abstraction has 10528 states and 14144 transitions. [2020-10-26 23:06:48,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:06:48,850 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 14144 transitions. [2020-10-26 23:06:48,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-26 23:06:48,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:06:48,857 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:06:48,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:06:48,858 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:06:48,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:06:48,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1950646274, now seen corresponding path program 1 times [2020-10-26 23:06:48,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:06:48,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842432420] [2020-10-26 23:06:48,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:06:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:06:48,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:06:49,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:06:49,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:06:54,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:06:54,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-26 23:06:54,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:06:54,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-26 23:06:54,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:06:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:06:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:06:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 23:06:54,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:06:54,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:06:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:06:54,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:06:54,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:06:54,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:06:54,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:06:54,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:06:54,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:06:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:06:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:06:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:06:54,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:06:54,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:06:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:06:54,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:06:54,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:06:54,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:06:54,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:06:54,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-26 23:06:54,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:06:54,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:06:54,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:06:54,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 23:06:54,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:06:54,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 23:06:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:06:54,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:06:54,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:06:54,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:06:54,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:06:54,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 23:06:54,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:06:54,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:06:54,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:06:54,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:06:54,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:06:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 118 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:06:55,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842432420] [2020-10-26 23:06:55,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:06:55,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:06:55,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44412171] [2020-10-26 23:06:55,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:06:55,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:06:55,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:06:55,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:06:55,167 INFO L87 Difference]: Start difference. First operand 10528 states and 14144 transitions. Second operand 8 states. [2020-10-26 23:06:55,336 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-26 23:06:57,684 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-26 23:07:28,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:07:28,783 INFO L93 Difference]: Finished difference Result 20681 states and 28290 transitions. [2020-10-26 23:07:28,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:07:28,789 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 267 [2020-10-26 23:07:28,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:07:28,854 INFO L225 Difference]: With dead ends: 20681 [2020-10-26 23:07:28,854 INFO L226 Difference]: Without dead ends: 10962 [2020-10-26 23:07:28,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:07:28,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10962 states. [2020-10-26 23:07:29,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10962 to 10756. [2020-10-26 23:07:29,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10756 states. [2020-10-26 23:07:29,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10756 states to 10756 states and 14616 transitions. [2020-10-26 23:07:29,222 INFO L78 Accepts]: Start accepts. Automaton has 10756 states and 14616 transitions. Word has length 267 [2020-10-26 23:07:29,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:07:29,224 INFO L481 AbstractCegarLoop]: Abstraction has 10756 states and 14616 transitions. [2020-10-26 23:07:29,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:07:29,224 INFO L276 IsEmpty]: Start isEmpty. Operand 10756 states and 14616 transitions. [2020-10-26 23:07:29,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-26 23:07:29,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:07:29,231 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:07:29,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:07:29,231 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:07:29,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:07:29,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1398999774, now seen corresponding path program 1 times [2020-10-26 23:07:29,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:07:29,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514699305] [2020-10-26 23:07:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:07:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:07:29,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:07:29,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:07:29,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:07:30,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:07:32,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:07:32,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-26 23:07:32,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:07:32,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3189 [2020-10-26 23:07:32,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:07:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:07:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:07:32,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-26 23:07:32,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:07:32,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:07:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:07:32,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:07:32,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:07:32,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:07:32,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:07:32,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:07:32,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:07:32,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:07:32,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:07:32,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:07:32,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:07:32,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:07:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:07:32,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:07:32,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:07:33,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:07:33,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:07:33,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:07:33,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-26 23:07:33,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:07:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:07:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:07:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:07:33,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:07:33,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-26 23:07:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:07:33,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:07:33,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:07:33,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:07:33,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:07:33,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-26 23:07:33,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:07:33,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:07:33,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:07:33,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:07:33,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:07:33,736 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:07:33,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514699305] [2020-10-26 23:07:33,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:07:33,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:07:33,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935002444] [2020-10-26 23:07:33,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:07:33,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:07:33,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:07:33,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:07:33,740 INFO L87 Difference]: Start difference. First operand 10756 states and 14616 transitions. Second operand 8 states. [2020-10-26 23:07:58,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:07:58,192 INFO L93 Difference]: Finished difference Result 29125 states and 42747 transitions. [2020-10-26 23:07:58,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:07:58,195 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 272 [2020-10-26 23:07:58,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:07:58,281 INFO L225 Difference]: With dead ends: 29125 [2020-10-26 23:07:58,282 INFO L226 Difference]: Without dead ends: 19178 [2020-10-26 23:07:58,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:07:58,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19178 states. [2020-10-26 23:07:58,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19178 to 18793. [2020-10-26 23:07:58,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18793 states. [2020-10-26 23:07:58,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18793 states to 18793 states and 24888 transitions. [2020-10-26 23:07:58,862 INFO L78 Accepts]: Start accepts. Automaton has 18793 states and 24888 transitions. Word has length 272 [2020-10-26 23:07:58,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:07:58,863 INFO L481 AbstractCegarLoop]: Abstraction has 18793 states and 24888 transitions. [2020-10-26 23:07:58,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:07:58,864 INFO L276 IsEmpty]: Start isEmpty. Operand 18793 states and 24888 transitions. [2020-10-26 23:07:58,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-26 23:07:58,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:07:58,871 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:07:58,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:07:58,871 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:07:58,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:07:58,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1249063621, now seen corresponding path program 1 times [2020-10-26 23:07:58,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:07:58,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403810164] [2020-10-26 23:07:58,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:07:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:07:59,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:07:59,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:08:00,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:08:00,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-26 23:08:00,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:08:00,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1321 [2020-10-26 23:08:00,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:08:00,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:08:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:08:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:08:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:08:00,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:08:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:08:00,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:08:00,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:08:00,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:08:00,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:08:00,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:08:00,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:08:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:08:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:08:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:08:00,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:08:00,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:08:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:08:00,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:08:00,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:08:00,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:08:00,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:08:00,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-26 23:08:00,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:08:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:08:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:08:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:08:00,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:08:00,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:08:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:08:00,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:08:01,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:08:01,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:08:01,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:08:01,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-26 23:08:01,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:08:01,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:08:01,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:08:01,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 23:08:01,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:08:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:08:01,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403810164] [2020-10-26 23:08:01,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:08:01,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:08:01,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241802618] [2020-10-26 23:08:01,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:08:01,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:08:01,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:08:01,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:08:01,227 INFO L87 Difference]: Start difference. First operand 18793 states and 24888 transitions. Second operand 7 states. [2020-10-26 23:08:01,382 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:08:32,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:08:32,925 INFO L93 Difference]: Finished difference Result 38268 states and 52521 transitions. [2020-10-26 23:08:32,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:08:32,928 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-10-26 23:08:32,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:08:33,013 INFO L225 Difference]: With dead ends: 38268 [2020-10-26 23:08:33,013 INFO L226 Difference]: Without dead ends: 20284 [2020-10-26 23:08:33,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:08:33,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20284 states. [2020-10-26 23:08:33,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20284 to 19814. [2020-10-26 23:08:33,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19814 states. [2020-10-26 23:08:33,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19814 states to 19814 states and 25704 transitions. [2020-10-26 23:08:33,910 INFO L78 Accepts]: Start accepts. Automaton has 19814 states and 25704 transitions. Word has length 274 [2020-10-26 23:08:33,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:08:33,911 INFO L481 AbstractCegarLoop]: Abstraction has 19814 states and 25704 transitions. [2020-10-26 23:08:33,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:08:33,911 INFO L276 IsEmpty]: Start isEmpty. Operand 19814 states and 25704 transitions. [2020-10-26 23:08:33,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-26 23:08:33,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:08:33,920 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:08:33,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:08:33,920 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:08:33,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:08:33,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1208794541, now seen corresponding path program 1 times [2020-10-26 23:08:33,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:08:33,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656426472] [2020-10-26 23:08:33,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:08:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:08:34,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:08:34,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:08:34,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:08:35,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:08:37,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:08:37,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-26 23:08:37,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:08:37,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3011 [2020-10-26 23:08:37,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:08:37,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:08:37,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:08:37,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 294 [2020-10-26 23:08:37,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:08:37,285 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:08:37,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:08:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:08:37,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:08:37,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:08:37,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:08:37,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:08:37,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:08:37,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:08:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:08:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:08:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:08:37,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:08:37,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:08:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:08:37,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:08:37,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:08:37,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:08:37,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:08:37,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:08:37,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-26 23:08:37,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:08:37,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:08:37,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:08:37,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:08:37,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:08:37,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-26 23:08:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:08:38,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:08:38,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:08:38,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:08:38,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:08:38,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:08:38,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-26 23:08:38,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:08:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:08:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:08:38,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 23:08:38,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:08:38,712 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-26 23:08:38,929 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-26 23:08:39,202 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-10-26 23:08:39,733 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 23 proven. 152 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-26 23:08:39,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656426472] [2020-10-26 23:08:39,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:08:39,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:08:39,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059095899] [2020-10-26 23:08:39,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:08:39,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:08:39,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:08:39,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:08:39,736 INFO L87 Difference]: Start difference. First operand 19814 states and 25704 transitions. Second operand 11 states. [2020-10-26 23:08:39,967 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-26 23:08:40,659 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-26 23:08:41,401 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79