/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/zero_sum_const3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:23:12,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:23:12,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:23:12,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:23:12,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:23:12,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:23:12,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:23:12,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:23:12,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:23:12,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:23:12,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:23:12,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:23:12,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:23:12,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:23:12,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:23:12,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:23:12,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:23:12,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:23:12,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:23:12,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:23:12,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:23:12,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:23:12,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:23:12,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:23:12,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:23:12,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:23:12,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:23:12,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:23:12,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:23:12,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:23:12,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:23:12,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:23:12,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:23:12,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:23:12,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:23:12,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:23:12,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:23:12,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:23:12,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:23:12,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:23:12,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:23:12,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:23:12,261 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:23:12,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:23:12,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:23:12,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:23:12,263 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:23:12,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:23:12,264 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:23:12,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:23:12,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:23:12,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:23:12,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:23:12,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:23:12,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:23:12,265 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:23:12,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:23:12,266 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:23:12,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:23:12,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:23:12,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:23:12,266 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:23:12,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:23:12,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:23:12,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:23:12,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:23:12,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:23:12,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:23:12,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:23:12,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:23:12,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:23:12,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:23:12,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:23:12,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:23:12,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:23:12,742 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:23:12,742 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:23:12,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const3.c [2020-10-29 03:23:12,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6138678d2/12db0b2f61f64c7faa05924615085e48/FLAGc8faae098 [2020-10-29 03:23:13,585 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:23:13,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum_const3.c [2020-10-29 03:23:13,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6138678d2/12db0b2f61f64c7faa05924615085e48/FLAGc8faae098 [2020-10-29 03:23:13,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6138678d2/12db0b2f61f64c7faa05924615085e48 [2020-10-29 03:23:13,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:23:13,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:23:13,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:23:13,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:23:13,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:23:13,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:23:13" (1/1) ... [2020-10-29 03:23:13,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508b4309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:13, skipping insertion in model container [2020-10-29 03:23:13,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:23:13" (1/1) ... [2020-10-29 03:23:13,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:23:13,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:23:14,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:23:14,180 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:23:14,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:23:14,226 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:23:14,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:14 WrapperNode [2020-10-29 03:23:14,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:23:14,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:23:14,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:23:14,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:23:14,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:14" (1/1) ... [2020-10-29 03:23:14,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:14" (1/1) ... [2020-10-29 03:23:14,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:14" (1/1) ... [2020-10-29 03:23:14,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:14" (1/1) ... [2020-10-29 03:23:14,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:14" (1/1) ... [2020-10-29 03:23:14,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:14" (1/1) ... [2020-10-29 03:23:14,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:14" (1/1) ... [2020-10-29 03:23:14,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:23:14,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:23:14,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:23:14,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:23:14,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:23:14,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:23:14,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:23:14,351 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:23:14,351 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:23:14,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:23:14,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:23:14,351 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:23:14,351 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:23:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:23:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:23:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:23:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:23:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-29 03:23:14,352 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:23:14,353 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:23:14,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:23:14,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:23:14,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:23:14,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:23:14,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:23:14,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:23:14,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:23:14,938 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:23:14,939 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-29 03:23:14,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:23:14 BoogieIcfgContainer [2020-10-29 03:23:14,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:23:14,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:23:14,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:23:14,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:23:14,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:23:13" (1/3) ... [2020-10-29 03:23:14,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194ff43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:23:14, skipping insertion in model container [2020-10-29 03:23:14,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:14" (2/3) ... [2020-10-29 03:23:14,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194ff43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:23:14, skipping insertion in model container [2020-10-29 03:23:14,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:23:14" (3/3) ... [2020-10-29 03:23:14,952 INFO L111 eAbstractionObserver]: Analyzing ICFG zero_sum_const3.c [2020-10-29 03:23:14,964 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:23:14,969 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:23:14,984 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:23:15,012 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:23:15,013 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:23:15,013 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:23:15,013 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:23:15,013 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:23:15,013 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:23:15,014 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:23:15,014 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:23:15,034 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-29 03:23:15,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 03:23:15,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:15,042 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] [2020-10-29 03:23:15,043 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:15,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:15,050 INFO L82 PathProgramCache]: Analyzing trace with hash -645642689, now seen corresponding path program 1 times [2020-10-29 03:23:15,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:15,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130145162] [2020-10-29 03:23:15,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:15,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:15,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:15,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:15,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:15,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:15,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:15,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:16,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:17,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:17,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 03:23:17,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:23:17,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1833 [2020-10-29 03:23:17,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:17,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:23:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:23:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:23:17,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:23:17,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:17,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:17,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:17,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:17,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:17,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:23:17,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:17,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:17,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:23:17,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130145162] [2020-10-29 03:23:17,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:23:17,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:23:17,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056758518] [2020-10-29 03:23:17,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:23:17,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:17,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:23:17,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:23:17,243 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 5 states. [2020-10-29 03:23:17,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:17,560 INFO L93 Difference]: Finished difference Result 93 states and 135 transitions. [2020-10-29 03:23:17,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:23:17,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-29 03:23:17,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:17,571 INFO L225 Difference]: With dead ends: 93 [2020-10-29 03:23:17,572 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 03:23:17,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:23:17,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 03:23:17,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2020-10-29 03:23:17,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 03:23:17,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-29 03:23:17,631 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 25 [2020-10-29 03:23:17,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:17,632 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-29 03:23:17,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:23:17,632 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-29 03:23:17,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 03:23:17,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:17,634 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] [2020-10-29 03:23:17,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:23:17,635 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:17,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:17,636 INFO L82 PathProgramCache]: Analyzing trace with hash -265634913, now seen corresponding path program 1 times [2020-10-29 03:23:17,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:17,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345795036] [2020-10-29 03:23:17,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:17,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:17,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:17,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:17,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:17,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:18,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:20,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:22,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:22,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 03:23:22,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:23:22,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 03:23:22,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:22,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:22,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:23:22,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:23:22,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:23:22,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:23:22,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:22,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:22,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:22,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:22,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:22,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:23:22,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:22,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:22,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:22,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:22,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:22,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:22,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 03:23:22,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345795036] [2020-10-29 03:23:22,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:22,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:23:22,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286313911] [2020-10-29 03:23:22,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:23:22,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:22,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:23:22,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:23:22,804 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 6 states. [2020-10-29 03:23:23,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:23,128 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2020-10-29 03:23:23,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:23:23,129 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-29 03:23:23,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:23,131 INFO L225 Difference]: With dead ends: 84 [2020-10-29 03:23:23,131 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 03:23:23,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:23:23,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 03:23:23,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-29 03:23:23,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 03:23:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-10-29 03:23:23,144 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 39 [2020-10-29 03:23:23,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:23,145 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-10-29 03:23:23,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:23:23,145 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-10-29 03:23:23,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 03:23:23,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:23,147 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:23:23,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:23:23,147 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:23,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:23,150 INFO L82 PathProgramCache]: Analyzing trace with hash 2136437933, now seen corresponding path program 2 times [2020-10-29 03:23:23,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:23,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910303380] [2020-10-29 03:23:23,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:23,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:23,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:24,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:25,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:26,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:26,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:27,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:28,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:28,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:28,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 03:23:28,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:23:28,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5283 [2020-10-29 03:23:28,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:28,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:28,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:23:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:23:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 03:23:28,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:30,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:30,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:30,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:30,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:30,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:30,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:23:30,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:30,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:30,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:30,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:23:30,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910303380] [2020-10-29 03:23:30,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:30,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:23:30,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221554575] [2020-10-29 03:23:30,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:23:30,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:30,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:23:30,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:23:30,199 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 23 states. [2020-10-29 03:23:30,386 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-29 03:23:31,589 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-29 03:23:32,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:32,348 INFO L93 Difference]: Finished difference Result 98 states and 109 transitions. [2020-10-29 03:23:32,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:23:32,349 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 53 [2020-10-29 03:23:32,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:32,351 INFO L225 Difference]: With dead ends: 98 [2020-10-29 03:23:32,351 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:23:32,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=183, Invalid=1299, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:23:32,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:23:32,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2020-10-29 03:23:32,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:23:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2020-10-29 03:23:32,384 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 53 [2020-10-29 03:23:32,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:32,388 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2020-10-29 03:23:32,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:23:32,388 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2020-10-29 03:23:32,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 03:23:32,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:32,391 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-29 03:23:32,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:23:32,391 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:32,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:32,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1961610833, now seen corresponding path program 3 times [2020-10-29 03:23:32,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:32,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344773645] [2020-10-29 03:23:32,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:32,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:32,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:32,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:32,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:32,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:37,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:37,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 03:23:37,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:23:37,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 03:23:37,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:37,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:37,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:23:37,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 03:23:37,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:23:37,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:37,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:37,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:37,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:37,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:37,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:37,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:23:37,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:37,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:37,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:37,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:37,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:37,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 03:23:37,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344773645] [2020-10-29 03:23:37,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:37,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:23:37,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361910069] [2020-10-29 03:23:37,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:23:37,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:37,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:23:37,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:23:37,573 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand 10 states. [2020-10-29 03:23:38,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:38,050 INFO L93 Difference]: Finished difference Result 179 states and 205 transitions. [2020-10-29 03:23:38,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:23:38,051 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-29 03:23:38,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:38,053 INFO L225 Difference]: With dead ends: 179 [2020-10-29 03:23:38,053 INFO L226 Difference]: Without dead ends: 105 [2020-10-29 03:23:38,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:23:38,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-29 03:23:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 90. [2020-10-29 03:23:38,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 03:23:38,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions. [2020-10-29 03:23:38,070 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 55 [2020-10-29 03:23:38,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:38,070 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions. [2020-10-29 03:23:38,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:23:38,071 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2020-10-29 03:23:38,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 03:23:38,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:38,072 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-29 03:23:38,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:23:38,073 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:38,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:38,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1621082895, now seen corresponding path program 4 times [2020-10-29 03:23:38,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:38,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744094715] [2020-10-29 03:23:38,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:38,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:38,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:38,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:38,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:38,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:40,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:43,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:43,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 03:23:43,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:23:43,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:23:43,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:43,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:23:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:23:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:23:43,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:43,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:43,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:43,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:43,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:43,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:43,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:23:43,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:43,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:43,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:43,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:43,219 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 03:23:43,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744094715] [2020-10-29 03:23:43,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:43,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:23:43,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23840891] [2020-10-29 03:23:43,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:23:43,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:43,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:23:43,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:23:43,222 INFO L87 Difference]: Start difference. First operand 90 states and 100 transitions. Second operand 10 states. [2020-10-29 03:23:43,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:43,621 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2020-10-29 03:23:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:23:43,621 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-29 03:23:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:43,623 INFO L225 Difference]: With dead ends: 98 [2020-10-29 03:23:43,624 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 03:23:43,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:23:43,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 03:23:43,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-29 03:23:43,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-29 03:23:43,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2020-10-29 03:23:43,641 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 57 [2020-10-29 03:23:43,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:43,641 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2020-10-29 03:23:43,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:23:43,641 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2020-10-29 03:23:43,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:23:43,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:43,647 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:43,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:23:43,647 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:43,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:43,648 INFO L82 PathProgramCache]: Analyzing trace with hash 220708155, now seen corresponding path program 5 times [2020-10-29 03:23:43,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:43,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497322454] [2020-10-29 03:23:43,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:43,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:44,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:45,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:48,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:48,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:48,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 03:23:48,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:23:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5262 [2020-10-29 03:23:48,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:48,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-29 03:23:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:23:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 03:23:48,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:50,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:50,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:50,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:50,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:50,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:50,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:23:50,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:50,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:50,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:23:50,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497322454] [2020-10-29 03:23:50,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:50,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:23:50,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440509272] [2020-10-29 03:23:50,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:23:50,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:50,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:23:50,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:23:50,566 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 31 states. [2020-10-29 03:23:51,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:51,781 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2020-10-29 03:23:51,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:23:51,783 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 67 [2020-10-29 03:23:51,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:51,784 INFO L225 Difference]: With dead ends: 116 [2020-10-29 03:23:51,784 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 03:23:51,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:23:51,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 03:23:51,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 105. [2020-10-29 03:23:51,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-29 03:23:51,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2020-10-29 03:23:51,801 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 67 [2020-10-29 03:23:51,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:51,802 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2020-10-29 03:23:51,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:23:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2020-10-29 03:23:51,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 03:23:51,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:51,803 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:51,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:23:51,804 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:51,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:51,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1660752195, now seen corresponding path program 6 times [2020-10-29 03:23:51,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:51,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787457749] [2020-10-29 03:23:51,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:51,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:51,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:51,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:51,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:53,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:56,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:56,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 03:23:56,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:23:56,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:23:56,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:56,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:23:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 03:23:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:23:56,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:56,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:56,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:56,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:56,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:56,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:56,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 03:23:56,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:56,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:56,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:56,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:56,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:56,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-29 03:23:57,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787457749] [2020-10-29 03:23:57,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:57,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:23:57,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669848963] [2020-10-29 03:23:57,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:23:57,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:57,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:23:57,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:23:57,012 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand 12 states. [2020-10-29 03:23:58,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:58,005 INFO L93 Difference]: Finished difference Result 205 states and 231 transitions. [2020-10-29 03:23:58,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:23:58,009 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-29 03:23:58,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:58,011 INFO L225 Difference]: With dead ends: 205 [2020-10-29 03:23:58,012 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 03:23:58,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:23:58,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 03:23:58,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 115. [2020-10-29 03:23:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-29 03:23:58,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2020-10-29 03:23:58,053 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 69 [2020-10-29 03:23:58,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:58,054 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2020-10-29 03:23:58,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:23:58,054 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2020-10-29 03:23:58,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 03:23:58,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:58,061 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:58,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:23:58,061 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:58,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:58,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1299413123, now seen corresponding path program 7 times [2020-10-29 03:23:58,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:58,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495483689] [2020-10-29 03:23:58,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:58,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:58,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:58,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:58,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:58,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:01,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:03,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:03,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 03:24:03,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:24:03,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:24:03,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:03,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:24:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 03:24:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:24:03,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:03,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:03,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:03,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:03,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:03,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:03,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:24:03,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:03,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:03,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:03,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:03,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:03,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-29 03:24:03,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495483689] [2020-10-29 03:24:03,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:03,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:24:03,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833111272] [2020-10-29 03:24:03,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:24:03,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:03,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:24:03,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:24:03,253 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand 12 states. [2020-10-29 03:24:03,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:03,894 INFO L93 Difference]: Finished difference Result 195 states and 212 transitions. [2020-10-29 03:24:03,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:24:03,895 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-29 03:24:03,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:03,897 INFO L225 Difference]: With dead ends: 195 [2020-10-29 03:24:03,897 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 03:24:03,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:24:03,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 03:24:03,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2020-10-29 03:24:03,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-29 03:24:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2020-10-29 03:24:03,911 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 69 [2020-10-29 03:24:03,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:03,911 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2020-10-29 03:24:03,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:24:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-10-29 03:24:03,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 03:24:03,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:03,913 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:03,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:24:03,913 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:03,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:03,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1386580663, now seen corresponding path program 8 times [2020-10-29 03:24:03,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:03,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317087650] [2020-10-29 03:24:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:04,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:04,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:06,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:08,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:08,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:08,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 03:24:08,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:24:08,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 03:24:08,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:08,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:08,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-29 03:24:08,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:24:08,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 03:24:08,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:13,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:13,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:13,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:13,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:13,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:24:13,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:13,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:13,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:13,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:13,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:13,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 03:24:13,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317087650] [2020-10-29 03:24:13,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:13,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-29 03:24:13,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945415430] [2020-10-29 03:24:13,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-29 03:24:13,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:13,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-29 03:24:13,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2103, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:24:13,086 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 48 states. [2020-10-29 03:24:14,843 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2020-10-29 03:24:16,094 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2020-10-29 03:24:16,397 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-29 03:24:16,630 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-10-29 03:24:16,943 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 37 [2020-10-29 03:24:17,326 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2020-10-29 03:24:20,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:20,595 INFO L93 Difference]: Finished difference Result 154 states and 168 transitions. [2020-10-29 03:24:20,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 03:24:20,596 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 81 [2020-10-29 03:24:20,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:20,600 INFO L225 Difference]: With dead ends: 154 [2020-10-29 03:24:20,600 INFO L226 Difference]: Without dead ends: 135 [2020-10-29 03:24:20,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 4 SyntacticMatches, 8 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=407, Invalid=4995, Unknown=0, NotChecked=0, Total=5402 [2020-10-29 03:24:20,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-29 03:24:20,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 117. [2020-10-29 03:24:20,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 03:24:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2020-10-29 03:24:20,641 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 81 [2020-10-29 03:24:20,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:20,642 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2020-10-29 03:24:20,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-29 03:24:20,642 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2020-10-29 03:24:20,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 03:24:20,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:20,643 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:20,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:24:20,644 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:20,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:20,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1673643189, now seen corresponding path program 9 times [2020-10-29 03:24:20,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:20,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005062928] [2020-10-29 03:24:20,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:20,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:20,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:20,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:20,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:25,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:25,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 03:24:25,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:24:25,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:24:25,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:25,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:25,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:24:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 03:24:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:24:25,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:25,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:25,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:25,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:25,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:25,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:25,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:24:25,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:25,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:25,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:25,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:25,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:25,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:24:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-29 03:24:25,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005062928] [2020-10-29 03:24:25,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:25,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:24:25,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183497604] [2020-10-29 03:24:25,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:24:25,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:25,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:24:25,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:24:25,874 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand 14 states. [2020-10-29 03:24:26,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:26,875 INFO L93 Difference]: Finished difference Result 282 states and 310 transitions. [2020-10-29 03:24:26,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:24:26,876 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2020-10-29 03:24:26,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:26,877 INFO L225 Difference]: With dead ends: 282 [2020-10-29 03:24:26,877 INFO L226 Difference]: Without dead ends: 149 [2020-10-29 03:24:26,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:24:26,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-29 03:24:26,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 134. [2020-10-29 03:24:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-29 03:24:26,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 144 transitions. [2020-10-29 03:24:26,896 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 144 transitions. Word has length 83 [2020-10-29 03:24:26,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:26,896 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 144 transitions. [2020-10-29 03:24:26,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:24:26,897 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 144 transitions. [2020-10-29 03:24:26,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 03:24:26,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:26,899 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:26,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:24:26,900 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:26,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:26,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1267855475, now seen corresponding path program 10 times [2020-10-29 03:24:26,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:26,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555213600] [2020-10-29 03:24:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:26,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:26,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:26,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:27,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:28,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:31,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:31,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 03:24:31,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:24:31,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 03:24:31,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:31,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:24:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 03:24:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:24:31,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:32,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:32,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:32,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:32,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:32,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:32,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:24:32,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:32,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:32,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:32,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:32,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:32,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-29 03:24:32,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555213600] [2020-10-29 03:24:32,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:32,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:24:32,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978731781] [2020-10-29 03:24:32,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:24:32,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:32,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:24:32,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:24:32,153 INFO L87 Difference]: Start difference. First operand 134 states and 144 transitions. Second operand 14 states. [2020-10-29 03:24:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:32,989 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2020-10-29 03:24:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:24:32,989 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-10-29 03:24:32,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:32,990 INFO L225 Difference]: With dead ends: 142 [2020-10-29 03:24:32,990 INFO L226 Difference]: Without dead ends: 96 [2020-10-29 03:24:32,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:24:32,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-29 03:24:33,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-29 03:24:33,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-29 03:24:33,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2020-10-29 03:24:33,004 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 85 [2020-10-29 03:24:33,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:33,004 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2020-10-29 03:24:33,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:24:33,004 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2020-10-29 03:24:33,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 03:24:33,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:33,005 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:33,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:24:33,006 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:33,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:33,006 INFO L82 PathProgramCache]: Analyzing trace with hash -131695401, now seen corresponding path program 11 times [2020-10-29 03:24:33,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:33,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394088786] [2020-10-29 03:24:33,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:33,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:34,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:36,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:38,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:38,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 03:24:38,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:24:38,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:24:38,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:38,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 66 [2020-10-29 03:24:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:24:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 03:24:38,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:42,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:42,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:42,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:42,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:42,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:24:42,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:42,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:42,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:42,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:42,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:42,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:42,411 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 03:24:42,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394088786] [2020-10-29 03:24:42,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:42,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-29 03:24:42,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544111048] [2020-10-29 03:24:42,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-29 03:24:42,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:42,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-29 03:24:42,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2324, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:24:42,415 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand 50 states. [2020-10-29 03:24:44,526 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-29 03:24:48,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:48,647 INFO L93 Difference]: Finished difference Result 164 states and 175 transitions. [2020-10-29 03:24:48,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:24:48,647 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 95 [2020-10-29 03:24:48,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:48,649 INFO L225 Difference]: With dead ends: 164 [2020-10-29 03:24:48,649 INFO L226 Difference]: Without dead ends: 158 [2020-10-29 03:24:48,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 5 SyntacticMatches, 16 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=284, Invalid=4972, Unknown=0, NotChecked=0, Total=5256 [2020-10-29 03:24:48,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-29 03:24:48,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 149. [2020-10-29 03:24:48,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-29 03:24:48,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 160 transitions. [2020-10-29 03:24:48,666 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 160 transitions. Word has length 95 [2020-10-29 03:24:48,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:48,667 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 160 transitions. [2020-10-29 03:24:48,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-29 03:24:48,667 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 160 transitions. [2020-10-29 03:24:48,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 03:24:48,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:48,668 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:48,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:24:48,668 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:48,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:48,669 INFO L82 PathProgramCache]: Analyzing trace with hash 314898265, now seen corresponding path program 12 times [2020-10-29 03:24:48,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:48,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489268193] [2020-10-29 03:24:48,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:48,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:48,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:48,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:48,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:50,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:53,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:53,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 03:24:53,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:24:53,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:24:53,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:53,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:53,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:24:53,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:24:53,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:24:53,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:53,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:53,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:53,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:53,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:53,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:53,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:24:53,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:53,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:53,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:53,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-29 03:24:53,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489268193] [2020-10-29 03:24:53,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:53,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:24:53,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870580581] [2020-10-29 03:24:53,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:24:53,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:53,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:24:53,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:24:53,959 INFO L87 Difference]: Start difference. First operand 149 states and 160 transitions. Second operand 16 states. [2020-10-29 03:24:55,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:55,022 INFO L93 Difference]: Finished difference Result 311 states and 337 transitions. [2020-10-29 03:24:55,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:24:55,023 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 97 [2020-10-29 03:24:55,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:55,025 INFO L225 Difference]: With dead ends: 311 [2020-10-29 03:24:55,025 INFO L226 Difference]: Without dead ends: 171 [2020-10-29 03:24:55,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:24:55,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-29 03:24:55,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 156. [2020-10-29 03:24:55,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-29 03:24:55,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2020-10-29 03:24:55,042 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 97 [2020-10-29 03:24:55,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:55,042 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2020-10-29 03:24:55,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:24:55,043 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2020-10-29 03:24:55,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 03:24:55,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:55,044 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:55,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:24:55,044 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:55,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:55,045 INFO L82 PathProgramCache]: Analyzing trace with hash 733863963, now seen corresponding path program 13 times [2020-10-29 03:24:55,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:55,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516003072] [2020-10-29 03:24:55,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:55,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:55,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:55,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:57,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:57,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:59,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:00,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:00,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 03:25:00,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:25:00,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:25:00,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:00,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:00,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:25:00,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:25:00,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 03:25:00,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:00,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:25:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:00,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:00,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:00,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:25:00,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:25:00,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:25:00,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:00,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:00,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:25:00,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:25:00,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:25:00,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-10-29 03:25:00,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516003072] [2020-10-29 03:25:00,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:25:00,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:25:00,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939767058] [2020-10-29 03:25:00,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:25:00,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:25:00,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:25:00,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:25:00,326 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand 16 states. [2020-10-29 03:25:01,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:25:01,427 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-29 03:25:01,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:25:01,428 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 99 [2020-10-29 03:25:01,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:25:01,429 INFO L225 Difference]: With dead ends: 164 [2020-10-29 03:25:01,429 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 03:25:01,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:25:01,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 03:25:01,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-29 03:25:01,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-29 03:25:01,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 116 transitions. [2020-10-29 03:25:01,441 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 116 transitions. Word has length 99 [2020-10-29 03:25:01,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:25:01,442 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 116 transitions. [2020-10-29 03:25:01,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:25:01,442 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 116 transitions. [2020-10-29 03:25:01,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 03:25:01,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:25:01,443 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:25:01,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:25:01,444 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:25:01,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:25:01,444 INFO L82 PathProgramCache]: Analyzing trace with hash -667241499, now seen corresponding path program 14 times [2020-10-29 03:25:01,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:25:01,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320072647] [2020-10-29 03:25:01,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:25:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:01,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:02,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:06,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:08,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:08,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 03:25:08,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:25:08,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6636 [2020-10-29 03:25:08,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:08,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 76 [2020-10-29 03:25:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:25:08,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 03:25:08,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:13,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:25:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:13,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:13,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:13,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:25:13,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:25:13,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:25:13,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:13,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:25:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:25:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:25:13,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-29 03:25:13,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320072647] [2020-10-29 03:25:13,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:25:13,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-29 03:25:13,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286406222] [2020-10-29 03:25:13,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-29 03:25:13,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:25:13,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-29 03:25:13,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1959, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:25:13,402 INFO L87 Difference]: Start difference. First operand 110 states and 116 transitions. Second operand 46 states. [2020-10-29 03:25:18,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:25:18,473 INFO L93 Difference]: Finished difference Result 188 states and 199 transitions. [2020-10-29 03:25:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:25:18,474 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 109 [2020-10-29 03:25:18,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:25:18,475 INFO L225 Difference]: With dead ends: 188 [2020-10-29 03:25:18,476 INFO L226 Difference]: Without dead ends: 182 [2020-10-29 03:25:18,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 7 SyntacticMatches, 28 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=121, Invalid=2135, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:25:18,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-29 03:25:18,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 171. [2020-10-29 03:25:18,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-29 03:25:18,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 182 transitions. [2020-10-29 03:25:18,499 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 182 transitions. Word has length 109 [2020-10-29 03:25:18,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:25:18,499 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 182 transitions. [2020-10-29 03:25:18,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-29 03:25:18,499 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 182 transitions. [2020-10-29 03:25:18,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 03:25:18,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:25:18,501 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:25:18,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:25:18,501 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:25:18,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:25:18,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1626471705, now seen corresponding path program 15 times [2020-10-29 03:25:18,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:25:18,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984776711] [2020-10-29 03:25:18,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:25:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:18,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:18,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:18,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:18,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:20,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:23,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:23,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 03:25:23,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:25:23,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:25:23,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:23,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:25:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:25:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:25:23,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:23,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:25:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:23,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:23,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:23,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:25:23,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:25:23,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:25:23,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:23,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:25:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:25:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:25:23,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:23,835 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-29 03:25:23,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984776711] [2020-10-29 03:25:23,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:25:23,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:25:23,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245571046] [2020-10-29 03:25:23,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:25:23,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:25:23,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:25:23,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:25:23,838 INFO L87 Difference]: Start difference. First operand 171 states and 182 transitions. Second operand 18 states. [2020-10-29 03:25:25,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:25:25,221 INFO L93 Difference]: Finished difference Result 355 states and 381 transitions. [2020-10-29 03:25:25,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:25:25,222 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 111 [2020-10-29 03:25:25,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:25:25,224 INFO L225 Difference]: With dead ends: 355 [2020-10-29 03:25:25,224 INFO L226 Difference]: Without dead ends: 193 [2020-10-29 03:25:25,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:25:25,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-29 03:25:25,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 178. [2020-10-29 03:25:25,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-29 03:25:25,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 188 transitions. [2020-10-29 03:25:25,241 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 188 transitions. Word has length 111 [2020-10-29 03:25:25,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:25:25,242 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 188 transitions. [2020-10-29 03:25:25,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:25:25,242 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 188 transitions. [2020-10-29 03:25:25,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 03:25:25,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:25:25,243 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:25:25,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:25:25,244 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:25:25,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:25:25,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1013588009, now seen corresponding path program 16 times [2020-10-29 03:25:25,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:25:25,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699638226] [2020-10-29 03:25:25,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:25:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:25,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:25,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:25,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:25,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:28,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:30,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:30,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 03:25:30,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:25:30,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:25:30,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:30,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:30,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:25:30,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 03:25:30,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 03:25:30,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:30,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:25:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:30,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:30,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:30,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:25:30,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:25:30,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:25:30,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:30,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:25:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:25:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:25:30,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-10-29 03:25:30,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699638226] [2020-10-29 03:25:30,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:25:30,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:25:30,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657866410] [2020-10-29 03:25:30,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:25:30,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:25:30,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:25:30,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:25:30,579 INFO L87 Difference]: Start difference. First operand 178 states and 188 transitions. Second operand 18 states. [2020-10-29 03:25:32,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:25:32,124 INFO L93 Difference]: Finished difference Result 186 states and 196 transitions. [2020-10-29 03:25:32,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:25:32,125 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 113 [2020-10-29 03:25:32,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:25:32,126 INFO L225 Difference]: With dead ends: 186 [2020-10-29 03:25:32,127 INFO L226 Difference]: Without dead ends: 124 [2020-10-29 03:25:32,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:25:32,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-29 03:25:32,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-29 03:25:32,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-29 03:25:32,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 130 transitions. [2020-10-29 03:25:32,139 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 130 transitions. Word has length 113 [2020-10-29 03:25:32,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:25:32,139 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 130 transitions. [2020-10-29 03:25:32,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:25:32,140 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 130 transitions. [2020-10-29 03:25:32,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 03:25:32,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:25:32,141 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:25:32,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:25:32,141 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:25:32,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:25:32,142 INFO L82 PathProgramCache]: Analyzing trace with hash -658638221, now seen corresponding path program 17 times [2020-10-29 03:25:32,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:25:32,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620430137] [2020-10-29 03:25:32,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:25:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:32,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:35,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:38,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:38,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 03:25:38,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:38,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5788 [2020-10-29 03:25:38,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:38,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:38,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 92 [2020-10-29 03:25:38,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:25:38,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 03:25:38,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:39,453 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-29 03:25:39,624 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-10-29 03:25:40,280 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-29 03:25:41,232 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-10-29 03:25:41,455 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-10-29 03:25:41,685 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-29 03:25:41,917 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-29 03:25:42,163 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2020-10-29 03:25:42,434 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-10-29 03:25:42,791 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2020-10-29 03:25:43,380 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-10-29 03:25:43,633 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 32 [2020-10-29 03:25:43,975 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 36 [2020-10-29 03:25:44,352 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 36 [2020-10-29 03:25:44,788 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 43 [2020-10-29 03:25:45,207 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 41 [2020-10-29 03:25:45,696 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 41 [2020-10-29 03:25:46,185 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 43 [2020-10-29 03:25:46,663 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44 [2020-10-29 03:25:47,134 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 41 [2020-10-29 03:25:47,700 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 41 [2020-10-29 03:25:48,082 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 35 [2020-10-29 03:25:48,628 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2020-10-29 03:25:49,181 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 47 [2020-10-29 03:25:49,699 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 43 [2020-10-29 03:25:50,235 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 41 [2020-10-29 03:25:50,726 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 41 [2020-10-29 03:25:51,194 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 38 [2020-10-29 03:25:51,672 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 36 [2020-10-29 03:25:52,192 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 40 [2020-10-29 03:25:52,717 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 34 [2020-10-29 03:25:53,200 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 31 [2020-10-29 03:25:53,661 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 32 [2020-10-29 03:25:54,177 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 37 [2020-10-29 03:25:54,632 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 25 [2020-10-29 03:25:55,066 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 28 [2020-10-29 03:25:55,468 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 30 [2020-10-29 03:25:55,848 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2020-10-29 03:25:56,313 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2020-10-29 03:25:56,749 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 31 [2020-10-29 03:25:57,145 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-10-29 03:25:57,538 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 29 [2020-10-29 03:25:57,976 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 32 [2020-10-29 03:25:58,338 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2020-10-29 03:25:58,719 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-10-29 03:25:59,104 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-10-29 03:25:59,500 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-10-29 03:25:59,846 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-10-29 03:26:03,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:26:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:03,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:03,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:03,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:26:03,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:26:03,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:26:03,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:03,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:26:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:26:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:26:03,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:26:03,532 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 51 proven. 243 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-29 03:26:03,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620430137] [2020-10-29 03:26:03,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:26:03,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2020-10-29 03:26:03,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5326871] [2020-10-29 03:26:03,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-10-29 03:26:03,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:26:03,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-10-29 03:26:03,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=726, Invalid=7646, Unknown=0, NotChecked=0, Total=8372 [2020-10-29 03:26:03,537 INFO L87 Difference]: Start difference. First operand 124 states and 130 transitions. Second operand 92 states. [2020-10-29 03:26:03,883 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-10-29 03:26:04,922 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2020-10-29 03:26:05,321 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-29 03:26:06,033 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 94 [2020-10-29 03:26:06,361 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-10-29 03:26:07,064 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 104 [2020-10-29 03:26:07,671 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 39 [2020-10-29 03:26:08,006 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-10-29 03:26:08,352 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-29 03:26:09,212 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2020-10-29 03:26:09,595 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-29 03:26:10,419 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 108 [2020-10-29 03:26:11,089 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-10-29 03:26:12,108 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 126 [2020-10-29 03:26:12,921 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 104 [2020-10-29 03:26:13,601 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2020-10-29 03:26:15,579 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-10-29 03:26:16,081 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-29 03:26:16,796 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-29 03:26:17,136 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-10-29 03:26:17,684 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2020-10-29 03:26:19,688 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 53 [2020-10-29 03:26:20,154 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2020-10-29 03:26:20,587 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-29 03:26:21,124 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-29 03:26:21,710 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-10-29 03:26:22,510 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 104 [2020-10-29 03:26:23,145 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-10-29 03:26:24,236 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 125 [2020-10-29 03:26:24,787 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2020-10-29 03:26:25,764 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 111 [2020-10-29 03:26:26,155 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-29 03:26:27,022 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 103 [2020-10-29 03:26:27,792 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 106 [2020-10-29 03:26:28,552 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2020-10-29 03:26:29,131 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-29 03:26:29,878 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 93 [2020-10-29 03:26:30,508 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2020-10-29 03:26:31,262 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2020-10-29 03:26:32,369 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2020-10-29 03:26:33,303 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2020-10-29 03:26:34,477 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 91 [2020-10-29 03:26:35,860 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 88 [2020-10-29 03:26:36,957 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 70 [2020-10-29 03:26:38,264 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 85 [2020-10-29 03:26:38,757 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2020-10-29 03:26:39,501 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2020-10-29 03:26:40,286 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 61 [2020-10-29 03:26:40,916 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2020-10-29 03:26:41,819 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2020-10-29 03:26:42,604 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 37 [2020-10-29 03:26:43,265 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 60 [2020-10-29 03:26:43,661 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 32 [2020-10-29 03:26:44,232 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 55 [2020-10-29 03:26:44,846 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 33 [2020-10-29 03:26:45,540 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 52 [2020-10-29 03:26:46,143 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 29 [2020-10-29 03:26:46,873 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 51 [2020-10-29 03:26:47,449 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 19 [2020-10-29 03:26:48,395 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 83 [2020-10-29 03:26:49,262 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 49 [2020-10-29 03:26:50,008 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 15 [2020-10-29 03:26:50,691 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-29 03:26:52,662 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 83 [2020-10-29 03:26:53,525 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-10-29 03:26:54,933 WARN L193 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 114 [2020-10-29 03:26:56,106 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 92 [2020-10-29 03:26:57,817 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 161 DAG size of output: 127 [2020-10-29 03:26:59,394 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 109 [2020-10-29 03:27:00,727 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 93