/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_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:17:45,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:17:45,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:17:46,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:17:46,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:17:46,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:17:46,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:17:46,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:17:46,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:17:46,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:17:46,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:17:46,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:17:46,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:17:46,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:17:46,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:17:46,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:17:46,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:17:46,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:17:46,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:17:46,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:17:46,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:17:46,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:17:46,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:17:46,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:17:46,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:17:46,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:17:46,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:17:46,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:17:46,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:17:46,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:17:46,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:17:46,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:17:46,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:17:46,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:17:46,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:17:46,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:17:46,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:17:46,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:17:46,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:17:46,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:17:46,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:17:46,136 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 23:17:46,188 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:17:46,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:17:46,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:17:46,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:17:46,193 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:17:46,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:17:46,194 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:17:46,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:17:46,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:17:46,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:17:46,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:17:46,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:17:46,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:17:46,196 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:17:46,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:17:46,197 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:17:46,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:17:46,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:17:46,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:17:46,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:17:46,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:17:46,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:17:46,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:17:46,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:17:46,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:17:46,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:17:46,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:17:46,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:17:46,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:17:46,199 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:17:46,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:17:46,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:17:46,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:17:46,680 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:17:46,680 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:17:46,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label55.c [2020-10-26 23:17:46,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0217a2e5b/d1abf0a98d124533bd3f236b21d5b94c/FLAG212bd3889 [2020-10-26 23:17:47,956 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:17:47,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label55.c [2020-10-26 23:17:48,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0217a2e5b/d1abf0a98d124533bd3f236b21d5b94c/FLAG212bd3889 [2020-10-26 23:17:48,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0217a2e5b/d1abf0a98d124533bd3f236b21d5b94c [2020-10-26 23:17:48,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:17:48,362 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:17:48,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:17:48,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:17:48,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:17:48,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:17:48" (1/1) ... [2020-10-26 23:17:48,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b560c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:48, skipping insertion in model container [2020-10-26 23:17:48,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:17:48" (1/1) ... [2020-10-26 23:17:48,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:17:48,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:17:50,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:17:50,203 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:17:51,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:17:51,062 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:17:51,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:51 WrapperNode [2020-10-26 23:17:51,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:17:51,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:17:51,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:17:51,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:17:51,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:51" (1/1) ... [2020-10-26 23:17:51,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:51" (1/1) ... [2020-10-26 23:17:51,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:51" (1/1) ... [2020-10-26 23:17:51,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:51" (1/1) ... [2020-10-26 23:17:51,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:51" (1/1) ... [2020-10-26 23:17:51,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:51" (1/1) ... [2020-10-26 23:17:51,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:51" (1/1) ... [2020-10-26 23:17:51,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:17:51,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:17:51,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:17:51,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:17:51,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:51" (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 23:17:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:17:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:17:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:17:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:17:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:17:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 23:17:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 23:17:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:17:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:17:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:17:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 23:17:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 23:17:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:17:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:17:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:17:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:17:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:17:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:17:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:17:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:17:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:17:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:17:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:17:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:17:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:18:02,138 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:18:02,139 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:18:02,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:18:02 BoogieIcfgContainer [2020-10-26 23:18:02,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:18:02,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:18:02,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:18:02,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:18:02,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:17:48" (1/3) ... [2020-10-26 23:18:02,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f11de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:18:02, skipping insertion in model container [2020-10-26 23:18:02,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:17:51" (2/3) ... [2020-10-26 23:18:02,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f11de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:18:02, skipping insertion in model container [2020-10-26 23:18:02,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:18:02" (3/3) ... [2020-10-26 23:18:02,154 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label55.c [2020-10-26 23:18:02,167 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:18:02,173 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:18:02,188 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:18:02,236 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:18:02,236 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:18:02,236 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:18:02,236 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:18:02,236 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:18:02,237 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:18:02,237 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:18:02,237 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:18:02,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-26 23:18:02,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-26 23:18:02,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:18:02,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:18:02,307 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:18:02,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:18:02,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1543639346, now seen corresponding path program 1 times [2020-10-26 23:18:02,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:18:02,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074188576] [2020-10-26 23:18:02,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:18:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:18:02,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:03,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:18:03,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-26 23:18:03,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:18:03,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-10-26 23:18:03,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:18:03,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:18:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:18:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-26 23:18:03,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:18:03,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:18:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:18:03,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:03,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:18:03,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:18:03,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:18:03,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:18:03,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:18:03,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:18:03,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:18:03,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:18:03,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:18:03,392 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 23:18:03,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074188576] [2020-10-26 23:18:03,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:18:03,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:18:03,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644726465] [2020-10-26 23:18:03,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:18:03,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:18:03,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:18:03,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:18:03,430 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-26 23:18:22,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:18:22,280 INFO L93 Difference]: Finished difference Result 3235 states and 5915 transitions. [2020-10-26 23:18:22,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:18:22,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-26 23:18:22,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:18:22,331 INFO L225 Difference]: With dead ends: 3235 [2020-10-26 23:18:22,333 INFO L226 Difference]: Without dead ends: 2027 [2020-10-26 23:18:22,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:18:22,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-10-26 23:18:22,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2010. [2020-10-26 23:18:22,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-26 23:18:22,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3292 transitions. [2020-10-26 23:18:22,593 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3292 transitions. Word has length 55 [2020-10-26 23:18:22,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:18:22,595 INFO L481 AbstractCegarLoop]: Abstraction has 2010 states and 3292 transitions. [2020-10-26 23:18:22,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:18:22,596 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3292 transitions. [2020-10-26 23:18:22,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-26 23:18:22,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:18:22,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:18:22,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:18:22,613 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:18:22,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:18:22,615 INFO L82 PathProgramCache]: Analyzing trace with hash 239703161, now seen corresponding path program 1 times [2020-10-26 23:18:22,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:18:22,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80172972] [2020-10-26 23:18:22,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:18:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:18:22,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:22,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:25,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:18:25,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-26 23:18:25,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:18:25,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2533 [2020-10-26 23:18:25,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:18:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:18:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:18:25,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:18:25,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:18:25,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:18:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:18:25,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:25,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:18:25,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:18:25,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:18:25,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:18:25,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:18:25,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:18:25,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:18:25,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:18:25,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-26 23:18:25,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:18:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:18:25,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:25,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:18:25,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 23:18:25,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:18:25,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-26 23:18:25,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:18:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:18:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:18:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:18:25,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:18:25,880 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:18:25,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80172972] [2020-10-26 23:18:25,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:18:25,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:18:25,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277036786] [2020-10-26 23:18:25,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:18:25,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:18:25,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:18:25,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:18:25,887 INFO L87 Difference]: Start difference. First operand 2010 states and 3292 transitions. Second operand 7 states. [2020-10-26 23:18:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:18:52,567 INFO L93 Difference]: Finished difference Result 5840 states and 9681 transitions. [2020-10-26 23:18:52,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:18:52,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-26 23:18:52,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:18:52,597 INFO L225 Difference]: With dead ends: 5840 [2020-10-26 23:18:52,598 INFO L226 Difference]: Without dead ends: 3836 [2020-10-26 23:18:52,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:18:52,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3836 states. [2020-10-26 23:18:52,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3836 to 3696. [2020-10-26 23:18:52,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3696 states. [2020-10-26 23:18:52,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 5278 transitions. [2020-10-26 23:18:52,756 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 5278 transitions. Word has length 130 [2020-10-26 23:18:52,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:18:52,757 INFO L481 AbstractCegarLoop]: Abstraction has 3696 states and 5278 transitions. [2020-10-26 23:18:52,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:18:52,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 5278 transitions. [2020-10-26 23:18:52,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-26 23:18:52,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:18:52,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:18:52,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:18:52,761 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:18:52,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:18:52,762 INFO L82 PathProgramCache]: Analyzing trace with hash 751825941, now seen corresponding path program 1 times [2020-10-26 23:18:52,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:18:52,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397870634] [2020-10-26 23:18:52,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:18:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:18:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:53,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:54,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:18:54,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 23:18:54,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:18:54,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-10-26 23:18:54,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:18:54,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:18:54,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:18:54,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:18:54,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:18:54,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:18:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:18:54,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:54,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:18:54,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:18:54,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:18:54,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:18:54,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:18:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:18:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:18:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:18:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:18:54,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:18:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:18:54,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:18:54,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:18:54,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-26 23:18:54,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:18:54,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-26 23:18:54,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:18:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:18:54,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:18:54,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:18:54,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:18:54,818 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:18:54,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397870634] [2020-10-26 23:18:54,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:18:54,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:18:54,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569989871] [2020-10-26 23:18:54,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:18:54,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:18:54,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:18:54,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:18:54,827 INFO L87 Difference]: Start difference. First operand 3696 states and 5278 transitions. Second operand 7 states. [2020-10-26 23:19:20,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:19:20,820 INFO L93 Difference]: Finished difference Result 11021 states and 15926 transitions. [2020-10-26 23:19:20,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:19:20,823 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-10-26 23:19:20,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:19:20,871 INFO L225 Difference]: With dead ends: 11021 [2020-10-26 23:19:20,871 INFO L226 Difference]: Without dead ends: 7331 [2020-10-26 23:19:20,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:19:20,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7331 states. [2020-10-26 23:19:21,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7331 to 7154. [2020-10-26 23:19:21,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7154 states. [2020-10-26 23:19:21,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7154 states to 7154 states and 9235 transitions. [2020-10-26 23:19:21,181 INFO L78 Accepts]: Start accepts. Automaton has 7154 states and 9235 transitions. Word has length 160 [2020-10-26 23:19:21,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:19:21,184 INFO L481 AbstractCegarLoop]: Abstraction has 7154 states and 9235 transitions. [2020-10-26 23:19:21,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:19:21,184 INFO L276 IsEmpty]: Start isEmpty. Operand 7154 states and 9235 transitions. [2020-10-26 23:19:21,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-26 23:19:21,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:21,198 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:19:21,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:19:21,205 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:21,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:21,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1586998834, now seen corresponding path program 1 times [2020-10-26 23:19:21,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:21,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321013438] [2020-10-26 23:19:21,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:21,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:21,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:26,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:26,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-26 23:19:26,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:19:26,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4703 [2020-10-26 23:19:26,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:26,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:19:26,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:19:26,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 23:19:26,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:26,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:26,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:26,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:26,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:26,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:26,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:19:26,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:26,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:26,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:26,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:19:26,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:26,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:19:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:26,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:26,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:26,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:19:26,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:26,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-26 23:19:26,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 23:19:26,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:26,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 23:19:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:26,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:26,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:26,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:19:26,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:26,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:19:26,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:26,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:19:26,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:19:26,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:19:26,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 94 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:19:27,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321013438] [2020-10-26 23:19:27,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:19:27,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:19:27,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703477603] [2020-10-26 23:19:27,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:19:27,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:27,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:19:27,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:19:27,019 INFO L87 Difference]: Start difference. First operand 7154 states and 9235 transitions. Second operand 7 states. [2020-10-26 23:19:27,183 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-26 23:19:29,283 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-26 23:19:48,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:19:48,630 INFO L93 Difference]: Finished difference Result 13745 states and 18007 transitions. [2020-10-26 23:19:48,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:19:48,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-26 23:19:48,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:19:48,674 INFO L225 Difference]: With dead ends: 13745 [2020-10-26 23:19:48,674 INFO L226 Difference]: Without dead ends: 7400 [2020-10-26 23:19:48,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:19:48,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7400 states. [2020-10-26 23:19:48,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7400 to 7241. [2020-10-26 23:19:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7241 states. [2020-10-26 23:19:48,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7241 states to 7241 states and 9380 transitions. [2020-10-26 23:19:48,921 INFO L78 Accepts]: Start accepts. Automaton has 7241 states and 9380 transitions. Word has length 255 [2020-10-26 23:19:48,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:19:48,922 INFO L481 AbstractCegarLoop]: Abstraction has 7241 states and 9380 transitions. [2020-10-26 23:19:48,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:19:48,922 INFO L276 IsEmpty]: Start isEmpty. Operand 7241 states and 9380 transitions. [2020-10-26 23:19:48,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-26 23:19:48,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:48,928 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, 2, 2, 2, 2, 2, 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] [2020-10-26 23:19:48,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:19:48,929 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:48,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:48,930 INFO L82 PathProgramCache]: Analyzing trace with hash 91983090, now seen corresponding path program 1 times [2020-10-26 23:19:48,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:48,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321104083] [2020-10-26 23:19:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:49,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:49,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:49,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:50,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:53,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:53,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:19:53,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:19:53,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4392 [2020-10-26 23:19:53,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:53,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:19:53,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:19:53,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-26 23:19:53,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:53,622 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:19:53,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:53,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:53,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:53,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:53,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:53,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:19:53,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:19:53,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:53,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:19:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:53,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:53,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:54,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:54,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:19:54,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:19:54,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-26 23:19:54,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:54,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:19:54,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:54,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-26 23:19:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:54,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:54,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:54,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:19:54,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:54,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-26 23:19:54,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:54,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:54,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:54,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:19:54,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:54,596 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 95 proven. 71 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:19:54,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321104083] [2020-10-26 23:19:54,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:19:54,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:19:54,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264414283] [2020-10-26 23:19:54,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:19:54,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:54,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:19:54,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:19:54,599 INFO L87 Difference]: Start difference. First operand 7241 states and 9380 transitions. Second operand 8 states. [2020-10-26 23:20:26,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:26,784 INFO L93 Difference]: Finished difference Result 19272 states and 26466 transitions. [2020-10-26 23:20:26,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:20:26,787 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 260 [2020-10-26 23:20:26,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:26,866 INFO L225 Difference]: With dead ends: 19272 [2020-10-26 23:20:26,866 INFO L226 Difference]: Without dead ends: 12840 [2020-10-26 23:20:26,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:20:26,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12840 states. [2020-10-26 23:20:27,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12840 to 12603. [2020-10-26 23:20:27,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12603 states. [2020-10-26 23:20:27,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12603 states to 12603 states and 15930 transitions. [2020-10-26 23:20:27,358 INFO L78 Accepts]: Start accepts. Automaton has 12603 states and 15930 transitions. Word has length 260 [2020-10-26 23:20:27,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:27,359 INFO L481 AbstractCegarLoop]: Abstraction has 12603 states and 15930 transitions. [2020-10-26 23:20:27,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:20:27,360 INFO L276 IsEmpty]: Start isEmpty. Operand 12603 states and 15930 transitions. [2020-10-26 23:20:27,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-26 23:20:27,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:27,366 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:20:27,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:20:27,366 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:27,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:27,367 INFO L82 PathProgramCache]: Analyzing trace with hash -191016811, now seen corresponding path program 1 times [2020-10-26 23:20:27,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:27,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857772777] [2020-10-26 23:20:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:27,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:28,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:28,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-26 23:20:28,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:20:28,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1302 [2020-10-26 23:20:28,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:28,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:28,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:20:28,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:20:28,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:28,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:28,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:28,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:28,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:28,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:28,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:20:28,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:28,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:28,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:28,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:28,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:28,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:29,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:29,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:29,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:20:29,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:29,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 23:20:29,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:20:29,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:29,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:20:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:29,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:29,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:29,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 23:20:29,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:29,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-26 23:20:29,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:29,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:29,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:29,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 23:20:29,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:20:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:20:29,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857772777] [2020-10-26 23:20:29,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:29,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:20:29,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512094683] [2020-10-26 23:20:29,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:20:29,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:29,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:20:29,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:20:29,715 INFO L87 Difference]: Start difference. First operand 12603 states and 15930 transitions. Second operand 7 states. [2020-10-26 23:20:29,862 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:21:03,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:03,632 INFO L93 Difference]: Finished difference Result 31111 states and 41693 transitions. [2020-10-26 23:21:03,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:21:03,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-10-26 23:21:03,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:03,722 INFO L225 Difference]: With dead ends: 31111 [2020-10-26 23:21:03,722 INFO L226 Difference]: Without dead ends: 19317 [2020-10-26 23:21:03,757 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 23:21:03,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19317 states. [2020-10-26 23:21:04,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19317 to 18883. [2020-10-26 23:21:04,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18883 states. [2020-10-26 23:21:04,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18883 states to 18883 states and 24044 transitions. [2020-10-26 23:21:04,446 INFO L78 Accepts]: Start accepts. Automaton has 18883 states and 24044 transitions. Word has length 262 [2020-10-26 23:21:04,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:04,447 INFO L481 AbstractCegarLoop]: Abstraction has 18883 states and 24044 transitions. [2020-10-26 23:21:04,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:21:04,447 INFO L276 IsEmpty]: Start isEmpty. Operand 18883 states and 24044 transitions. [2020-10-26 23:21:04,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-26 23:21:04,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:04,454 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:21:04,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:21:04,454 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:04,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:04,455 INFO L82 PathProgramCache]: Analyzing trace with hash 2115275683, now seen corresponding path program 1 times [2020-10-26 23:21:04,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:04,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19658143] [2020-10-26 23:21:04,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:04,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:04,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:05,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:05,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:07,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:08,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:08,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-26 23:21:08,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:21:08,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4023 [2020-10-26 23:21:08,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:08,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:21:08,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:21:08,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-26 23:21:08,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:08,844 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:21:08,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:08,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:08,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:08,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:08,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:08,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:21:08,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:08,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:08,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:08,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:21:08,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:08,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:09,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:09,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:09,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:09,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:21:09,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:21:09,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-26 23:21:09,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:09,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:09,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:09,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:21:09,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:09,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-26 23:21:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:09,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:09,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:09,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:21:09,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:21:09,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-26 23:21:09,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:21:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 23:21:09,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:10,269 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-26 23:21:10,509 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-26 23:21:10,739 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-26 23:21:11,194 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 20 proven. 163 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:21:11,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19658143] [2020-10-26 23:21:11,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:11,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:21:11,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853998254] [2020-10-26 23:21:11,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:21:11,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:11,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:21:11,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:21:11,198 INFO L87 Difference]: Start difference. First operand 18883 states and 24044 transitions. Second operand 12 states. [2020-10-26 23:21:11,441 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-26 23:21:12,119 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-26 23:21:14,986 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-26 23:21:16,059 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 85 [2020-10-26 23:21:17,193 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-10-26 23:21:20,362 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-10-26 23:21:20,922 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-10-26 23:21:21,622 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2020-10-26 23:21:22,165 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 81 [2020-10-26 23:21:23,535 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 85 [2020-10-26 23:21:25,726 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-10-26 23:21:31,946 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33