/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:47:41,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:47:41,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:47:41,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:47:41,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:47:41,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:47:41,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:47:41,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:47:41,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:47:41,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:47:41,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:47:41,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:47:41,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:47:41,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:47:41,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:47:41,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:47:41,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:47:41,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:47:41,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:47:41,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:47:41,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:47:41,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:47:41,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:47:41,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:47:41,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:47:41,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:47:41,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:47:41,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:47:41,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:47:41,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-29 07:47:41,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:47:41,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:47:41,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:47:41,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:47:41,427 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:47:41,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:47:41,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:47:41,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:47:41,434 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:47:41,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:47:41,434 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:47:41,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:47:41,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:47:41,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:47:41,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:47:41,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:47:41,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:47:41,437 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:47:41,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:47:41,437 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:47:41,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:47:41,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:47:41,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:47:41,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:47:41,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:47:41,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:47:41,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:47:41,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:47:41,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:47:41,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:47:41,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:47:41,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:47:41,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:47:41,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:47:41,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:47:41,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:47:41,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:47:41,869 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:47:41,870 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:47:41,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label33.c [2020-10-29 07:47:41,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34f419d26/e68d5568a81d4ee7846a0719d5928907/FLAGcf2693996 [2020-10-29 07:47:42,929 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:47:42,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label33.c [2020-10-29 07:47:42,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34f419d26/e68d5568a81d4ee7846a0719d5928907/FLAGcf2693996 [2020-10-29 07:47:43,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34f419d26/e68d5568a81d4ee7846a0719d5928907 [2020-10-29 07:47:43,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:47:43,502 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:47:43,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:47:43,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:47:43,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:47:43,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:47:43" (1/1) ... [2020-10-29 07:47:43,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a47a54e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:47:43, skipping insertion in model container [2020-10-29 07:47:43,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:47:43" (1/1) ... [2020-10-29 07:47:43,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:47:43,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:47:44,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:47:44,449 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:47:44,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:47:44,769 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:47:44,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:47:44 WrapperNode [2020-10-29 07:47:44,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:47:44,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:47:44,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:47:44,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:47:44,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:47:44" (1/1) ... [2020-10-29 07:47:44,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:47:44" (1/1) ... [2020-10-29 07:47:44,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:47:44" (1/1) ... [2020-10-29 07:47:44,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:47:44" (1/1) ... [2020-10-29 07:47:44,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:47:44" (1/1) ... [2020-10-29 07:47:44,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:47:44" (1/1) ... [2020-10-29 07:47:45,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:47:44" (1/1) ... [2020-10-29 07:47:45,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:47:45,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:47:45,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:47:45,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:47:45,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:47:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:47:45,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:47:45,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:47:45,123 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:47:45,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:47:45,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:47:45,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:47:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:47:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:47:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:47:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:47:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:47:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:47:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:47:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:47:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:47:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:47:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:47:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:47:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:47:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:47:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:47:48,962 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:47:48,962 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:47:48,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:47:48 BoogieIcfgContainer [2020-10-29 07:47:48,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:47:48,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:47:48,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:47:48,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:47:48,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:47:43" (1/3) ... [2020-10-29 07:47:48,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d208c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:47:48, skipping insertion in model container [2020-10-29 07:47:48,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:47:44" (2/3) ... [2020-10-29 07:47:48,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d208c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:47:48, skipping insertion in model container [2020-10-29 07:47:48,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:47:48" (3/3) ... [2020-10-29 07:47:48,981 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label33.c [2020-10-29 07:47:49,002 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:47:49,010 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:47:49,030 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:47:49,092 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:47:49,092 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:47:49,092 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:47:49,092 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:47:49,093 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:47:49,093 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:47:49,093 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:47:49,093 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:47:49,148 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:47:49,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 07:47:49,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:49,167 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] [2020-10-29 07:47:49,167 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:49,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:49,179 INFO L82 PathProgramCache]: Analyzing trace with hash 907733407, now seen corresponding path program 1 times [2020-10-29 07:47:49,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:49,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984280370] [2020-10-29 07:47:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:49,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:50,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:50,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 07:47:50,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:50,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-10-29 07:47:50,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:50,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:50,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:47:50,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:47:50,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 07:47:50,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:47:50,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:50,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:50,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:50,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:50,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:50,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:47:50,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:50,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:50,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:50,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:47:50,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:47:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:47:50,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984280370] [2020-10-29 07:47:50,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:47:50,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:47:50,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3386194] [2020-10-29 07:47:50,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:47:50,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:50,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:47:50,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:47:50,400 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:48:01,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:01,752 INFO L93 Difference]: Finished difference Result 1229 states and 2206 transitions. [2020-10-29 07:48:01,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:48:01,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-29 07:48:01,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:01,778 INFO L225 Difference]: With dead ends: 1229 [2020-10-29 07:48:01,778 INFO L226 Difference]: Without dead ends: 709 [2020-10-29 07:48:01,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:48:01,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-29 07:48:01,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 695. [2020-10-29 07:48:01,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-29 07:48:01,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1081 transitions. [2020-10-29 07:48:01,911 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1081 transitions. Word has length 29 [2020-10-29 07:48:01,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:01,912 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 1081 transitions. [2020-10-29 07:48:01,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:48:01,912 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1081 transitions. [2020-10-29 07:48:01,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 07:48:01,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:01,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:01,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:48:01,919 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:01,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:01,919 INFO L82 PathProgramCache]: Analyzing trace with hash 950318823, now seen corresponding path program 1 times [2020-10-29 07:48:01,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:01,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554763006] [2020-10-29 07:48:01,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:02,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:02,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:03,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:03,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:03,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:48:03,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:48:03,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1422 [2020-10-29 07:48:03,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:03,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:03,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:48:03,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:48:03,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:48:03,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:48:03,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:03,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:03,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:03,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:03,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:03,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:48:03,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:03,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:03,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:03,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:03,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:48:03,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:03,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:03,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:03,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:03,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 07:48:03,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:03,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 07:48:03,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:03,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:03,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:48:03,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:48:03,886 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:48:03,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554763006] [2020-10-29 07:48:03,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:48:03,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:48:03,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164784132] [2020-10-29 07:48:03,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:48:03,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:03,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:48:03,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:48:03,896 INFO L87 Difference]: Start difference. First operand 695 states and 1081 transitions. Second operand 7 states. [2020-10-29 07:48:14,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:14,791 INFO L93 Difference]: Finished difference Result 1722 states and 2740 transitions. [2020-10-29 07:48:14,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:48:14,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-29 07:48:14,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:14,806 INFO L225 Difference]: With dead ends: 1722 [2020-10-29 07:48:14,807 INFO L226 Difference]: Without dead ends: 1033 [2020-10-29 07:48:14,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:48:14,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2020-10-29 07:48:14,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 999. [2020-10-29 07:48:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-10-29 07:48:14,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1350 transitions. [2020-10-29 07:48:14,870 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1350 transitions. Word has length 99 [2020-10-29 07:48:14,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:14,871 INFO L481 AbstractCegarLoop]: Abstraction has 999 states and 1350 transitions. [2020-10-29 07:48:14,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:48:14,872 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1350 transitions. [2020-10-29 07:48:14,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 07:48:14,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:14,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:14,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:48:14,877 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:14,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:14,878 INFO L82 PathProgramCache]: Analyzing trace with hash -324460497, now seen corresponding path program 1 times [2020-10-29 07:48:14,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:14,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402067926] [2020-10-29 07:48:14,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:14,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:15,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:15,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:15,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 07:48:15,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:48:15,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-10-29 07:48:15,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:15,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:48:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:48:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:48:15,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:16,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:16,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:16,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:16,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:16,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:48:16,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:16,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:16,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:16,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:48:16,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:16,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:16,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:16,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:16,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:48:16,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:16,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-29 07:48:16,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:16,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:16,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:16,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:16,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:48:16,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:48:16,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402067926] [2020-10-29 07:48:16,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:48:16,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:48:16,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249500119] [2020-10-29 07:48:16,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:48:16,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:16,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:48:16,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:48:16,484 INFO L87 Difference]: Start difference. First operand 999 states and 1350 transitions. Second operand 7 states. [2020-10-29 07:48:28,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:28,444 INFO L93 Difference]: Finished difference Result 2357 states and 3344 transitions. [2020-10-29 07:48:28,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:48:28,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-10-29 07:48:28,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:28,467 INFO L225 Difference]: With dead ends: 2357 [2020-10-29 07:48:28,467 INFO L226 Difference]: Without dead ends: 1671 [2020-10-29 07:48:28,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:48:28,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2020-10-29 07:48:28,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1335. [2020-10-29 07:48:28,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-10-29 07:48:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1725 transitions. [2020-10-29 07:48:28,526 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1725 transitions. Word has length 103 [2020-10-29 07:48:28,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:28,526 INFO L481 AbstractCegarLoop]: Abstraction has 1335 states and 1725 transitions. [2020-10-29 07:48:28,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:48:28,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1725 transitions. [2020-10-29 07:48:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-29 07:48:28,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:28,531 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:28,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:48:28,531 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:28,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:28,532 INFO L82 PathProgramCache]: Analyzing trace with hash -689564534, now seen corresponding path program 1 times [2020-10-29 07:48:28,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:28,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464144349] [2020-10-29 07:48:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:28,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:28,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:29,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:31,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:31,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-29 07:48:31,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:48:31,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3105 [2020-10-29 07:48:31,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:31,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:48:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:48:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:48:31,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:31,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:31,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:31,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:31,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:31,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:48:31,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:31,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:48:31,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:31,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:32,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:32,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:32,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:48:32,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:32,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-29 07:48:32,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:32,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:32,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:48:32,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:33,229 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:48:33,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464144349] [2020-10-29 07:48:33,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:48:33,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:48:33,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242689969] [2020-10-29 07:48:33,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:48:33,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:33,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:48:33,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:48:33,232 INFO L87 Difference]: Start difference. First operand 1335 states and 1725 transitions. Second operand 7 states. [2020-10-29 07:48:44,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:44,159 INFO L93 Difference]: Finished difference Result 3005 states and 3805 transitions. [2020-10-29 07:48:44,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:48:44,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-10-29 07:48:44,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:44,171 INFO L225 Difference]: With dead ends: 3005 [2020-10-29 07:48:44,171 INFO L226 Difference]: Without dead ends: 1676 [2020-10-29 07:48:44,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:48:44,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2020-10-29 07:48:44,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1644. [2020-10-29 07:48:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2020-10-29 07:48:44,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2043 transitions. [2020-10-29 07:48:44,231 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2043 transitions. Word has length 229 [2020-10-29 07:48:44,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:44,253 INFO L481 AbstractCegarLoop]: Abstraction has 1644 states and 2043 transitions. [2020-10-29 07:48:44,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:48:44,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2043 transitions. [2020-10-29 07:48:44,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-29 07:48:44,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:44,259 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:44,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:48:44,260 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:44,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:44,261 INFO L82 PathProgramCache]: Analyzing trace with hash -2079802861, now seen corresponding path program 1 times [2020-10-29 07:48:44,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:44,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034974325] [2020-10-29 07:48:44,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:44,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:44,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:46,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:46,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-29 07:48:46,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:48:46,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1724 [2020-10-29 07:48:46,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:46,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:46,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:48:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:48:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 306 [2020-10-29 07:48:46,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:46,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:46,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:46,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:46,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:46,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:46,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:48:46,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:46,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:46,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:46,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:46,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:48:46,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:46,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:46,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:46,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:46,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:48:46,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:46,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-29 07:48:46,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:46,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:46,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:46,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:46,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-29 07:48:46,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:47,300 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:48:47,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034974325] [2020-10-29 07:48:47,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:48:47,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:48:47,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986415124] [2020-10-29 07:48:47,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:48:47,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:47,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:48:47,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:48:47,303 INFO L87 Difference]: Start difference. First operand 1644 states and 2043 transitions. Second operand 6 states. [2020-10-29 07:48:58,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:58,710 INFO L93 Difference]: Finished difference Result 3324 states and 4416 transitions. [2020-10-29 07:48:58,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:48:58,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 303 [2020-10-29 07:48:58,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:58,729 INFO L225 Difference]: With dead ends: 3324 [2020-10-29 07:48:58,729 INFO L226 Difference]: Without dead ends: 2620 [2020-10-29 07:48:58,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:48:58,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2020-10-29 07:48:58,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2594. [2020-10-29 07:48:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2594 states. [2020-10-29 07:48:58,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 3134 transitions. [2020-10-29 07:48:58,814 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 3134 transitions. Word has length 303 [2020-10-29 07:48:58,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:58,815 INFO L481 AbstractCegarLoop]: Abstraction has 2594 states and 3134 transitions. [2020-10-29 07:48:58,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:48:58,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 3134 transitions. [2020-10-29 07:48:58,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-29 07:48:58,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:58,822 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:58,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:48:58,823 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:58,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:58,824 INFO L82 PathProgramCache]: Analyzing trace with hash 931529558, now seen corresponding path program 1 times [2020-10-29 07:48:58,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:58,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390323635] [2020-10-29 07:48:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:58,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:59,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:59,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:01,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:03,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:03,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-29 07:49:03,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:49:03,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 07:49:03,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:03,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:03,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:49:03,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:49:03,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 329 [2020-10-29 07:49:03,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:04,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:04,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:04,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:04,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:04,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:04,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:49:04,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:04,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:04,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:04,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:04,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:49:04,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:04,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:04,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:04,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:04,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:04,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:49:04,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:49:04,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-29 07:49:04,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:04,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:04,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:49:04,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:04,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:49:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:04,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:04,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:05,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:05,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:49:05,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:49:05,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 852 [2020-10-29 07:49:05,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:05,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 07:49:05,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:05,689 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 34 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 07:49:05,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390323635] [2020-10-29 07:49:05,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:05,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:49:05,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578776363] [2020-10-29 07:49:05,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:05,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:05,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:05,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:05,692 INFO L87 Difference]: Start difference. First operand 2594 states and 3134 transitions. Second operand 7 states. [2020-10-29 07:49:06,417 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-29 07:49:24,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:24,980 INFO L93 Difference]: Finished difference Result 5510 states and 7129 transitions. [2020-10-29 07:49:24,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:49:24,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 324 [2020-10-29 07:49:24,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:25,001 INFO L225 Difference]: With dead ends: 5510 [2020-10-29 07:49:25,002 INFO L226 Difference]: Without dead ends: 4167 [2020-10-29 07:49:25,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:49:25,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2020-10-29 07:49:25,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3219. [2020-10-29 07:49:25,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3219 states. [2020-10-29 07:49:25,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 4080 transitions. [2020-10-29 07:49:25,116 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 4080 transitions. Word has length 324 [2020-10-29 07:49:25,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:25,117 INFO L481 AbstractCegarLoop]: Abstraction has 3219 states and 4080 transitions. [2020-10-29 07:49:25,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:25,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 4080 transitions. [2020-10-29 07:49:25,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-10-29 07:49:25,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:25,129 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:25,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:49:25,129 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:25,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:25,132 INFO L82 PathProgramCache]: Analyzing trace with hash 841609667, now seen corresponding path program 1 times [2020-10-29 07:49:25,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:25,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143145878] [2020-10-29 07:49:25,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:25,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:25,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:26,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:30,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:30,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-29 07:49:30,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:49:30,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 07:49:30,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:30,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:30,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:30,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-29 07:49:30,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:49:30,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:30,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:30,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:30,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:30,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:30,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:30,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:49:30,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:30,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:30,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:30,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:30,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:30,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:30,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:49:30,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:30,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 07:49:30,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:30,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:30,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:30,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:49:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:30,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:30,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:30,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:49:30,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:30,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 07:49:30,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:30,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:49:30,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:30,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-29 07:49:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:31,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:31,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:31,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:49:31,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:31,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 07:49:31,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:31,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:49:31,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 07:49:31,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143145878] [2020-10-29 07:49:31,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:31,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:49:31,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996546286] [2020-10-29 07:49:31,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:31,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:31,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:31,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:31,562 INFO L87 Difference]: Start difference. First operand 3219 states and 4080 transitions. Second operand 7 states. [2020-10-29 07:49:45,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:45,684 INFO L93 Difference]: Finished difference Result 5941 states and 8320 transitions. [2020-10-29 07:49:45,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:49:45,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 459 [2020-10-29 07:49:45,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:45,712 INFO L225 Difference]: With dead ends: 5941 [2020-10-29 07:49:45,712 INFO L226 Difference]: Without dead ends: 3973 [2020-10-29 07:49:45,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:49:45,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3973 states. [2020-10-29 07:49:45,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3973 to 3559. [2020-10-29 07:49:45,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3559 states. [2020-10-29 07:49:45,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3559 states to 3559 states and 4476 transitions. [2020-10-29 07:49:45,859 INFO L78 Accepts]: Start accepts. Automaton has 3559 states and 4476 transitions. Word has length 459 [2020-10-29 07:49:45,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:45,860 INFO L481 AbstractCegarLoop]: Abstraction has 3559 states and 4476 transitions. [2020-10-29 07:49:45,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:45,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3559 states and 4476 transitions. [2020-10-29 07:49:45,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-29 07:49:45,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:45,874 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:45,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:49:45,875 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:45,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:45,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1830595504, now seen corresponding path program 1 times [2020-10-29 07:49:45,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:45,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525593805] [2020-10-29 07:49:45,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:46,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:46,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:47,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:47,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:51,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:51,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-29 07:49:51,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:49:51,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 07:49:51,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:51,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 371 [2020-10-29 07:49:51,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:49:51,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:51,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:51,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:51,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:51,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:51,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:49:51,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:51,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:51,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:51,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:51,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:51,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:51,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:49:51,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:51,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 07:49:51,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:51,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:51,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:51,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:51,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:51,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:51,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:49:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:51,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:51,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:51,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:49:51,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:51,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 07:49:51,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:51,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:51,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:51,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:49:51,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:51,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-29 07:49:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:51,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:51,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:51,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:49:51,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:51,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 07:49:51,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:51,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:51,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:51,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:51,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:49:51,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-29 07:49:52,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525593805] [2020-10-29 07:49:52,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:52,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:49:52,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433988725] [2020-10-29 07:49:52,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:52,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:52,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:52,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:52,051 INFO L87 Difference]: Start difference. First operand 3559 states and 4476 transitions. Second operand 7 states. [2020-10-29 07:50:05,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:05,939 INFO L93 Difference]: Finished difference Result 7507 states and 10011 transitions. [2020-10-29 07:50:05,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:50:05,941 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 464 [2020-10-29 07:50:05,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:05,967 INFO L225 Difference]: With dead ends: 7507 [2020-10-29 07:50:05,967 INFO L226 Difference]: Without dead ends: 5199 [2020-10-29 07:50:05,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:50:05,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5199 states. [2020-10-29 07:50:06,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5199 to 4849. [2020-10-29 07:50:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4849 states. [2020-10-29 07:50:06,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4849 states to 4849 states and 6325 transitions. [2020-10-29 07:50:06,133 INFO L78 Accepts]: Start accepts. Automaton has 4849 states and 6325 transitions. Word has length 464 [2020-10-29 07:50:06,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:06,135 INFO L481 AbstractCegarLoop]: Abstraction has 4849 states and 6325 transitions. [2020-10-29 07:50:06,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:50:06,135 INFO L276 IsEmpty]: Start isEmpty. Operand 4849 states and 6325 transitions. [2020-10-29 07:50:06,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-29 07:50:06,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:06,147 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:06,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:50:06,148 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:06,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:06,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1338574957, now seen corresponding path program 1 times [2020-10-29 07:50:06,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:06,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933246317] [2020-10-29 07:50:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:06,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:06,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:07,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:08,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:11,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:11,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-29 07:50:11,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:50:11,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 07:50:11,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:11,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:11,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:11,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:50:11,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:50:11,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:11,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:11,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:11,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:11,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:11,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:11,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:50:11,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:11,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:11,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:11,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:11,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:11,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:11,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:11,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:50:11,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:11,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-29 07:50:11,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:11,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:50:11,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:11,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:50:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:11,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:12,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:12,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:50:12,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:12,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 07:50:12,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:12,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:12,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:12,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:12,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:50:12,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:12,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-10-29 07:50:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:12,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:12,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:12,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:50:12,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:12,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 07:50:12,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:12,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:50:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:12,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:12,238 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 148 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 07:50:12,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933246317] [2020-10-29 07:50:12,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:12,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:50:12,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56940964] [2020-10-29 07:50:12,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:50:12,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:12,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:50:12,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:50:12,243 INFO L87 Difference]: Start difference. First operand 4849 states and 6325 transitions. Second operand 7 states. [2020-10-29 07:50:25,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:25,102 INFO L93 Difference]: Finished difference Result 12012 states and 16572 transitions. [2020-10-29 07:50:25,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:50:25,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 465 [2020-10-29 07:50:25,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:25,140 INFO L225 Difference]: With dead ends: 12012 [2020-10-29 07:50:25,140 INFO L226 Difference]: Without dead ends: 7476 [2020-10-29 07:50:25,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:50:25,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7476 states. [2020-10-29 07:50:25,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7476 to 6776. [2020-10-29 07:50:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6776 states. [2020-10-29 07:50:25,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6776 states to 6776 states and 8565 transitions. [2020-10-29 07:50:25,378 INFO L78 Accepts]: Start accepts. Automaton has 6776 states and 8565 transitions. Word has length 465 [2020-10-29 07:50:25,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:25,380 INFO L481 AbstractCegarLoop]: Abstraction has 6776 states and 8565 transitions. [2020-10-29 07:50:25,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:50:25,380 INFO L276 IsEmpty]: Start isEmpty. Operand 6776 states and 8565 transitions. [2020-10-29 07:50:25,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2020-10-29 07:50:25,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:25,396 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:25,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:50:25,396 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:25,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:25,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1667034896, now seen corresponding path program 1 times [2020-10-29 07:50:25,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:25,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053847367] [2020-10-29 07:50:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:25,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:25,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:25,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:26,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:27,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:27,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:28,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:30,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:30,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 504 [2020-10-29 07:50:30,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 07:50:30,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 07:50:30,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:30,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:50:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:50:30,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:30,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:30,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:30,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:30,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:30,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:30,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:50:30,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:30,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:30,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:30,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:30,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:30,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:30,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:50:30,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:30,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 07:50:30,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:30,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:30,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:30,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:30,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:50:30,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:30,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:50:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:30,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:31,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:31,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:50:31,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:31,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-29 07:50:31,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:31,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:31,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:31,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:31,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:50:31,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:31,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-29 07:50:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:31,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:31,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:31,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:50:31,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:31,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:50:31,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:31,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:31,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:31,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 07:50:31,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:31,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:31,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-29 07:50:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:31,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:31,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:31,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:50:31,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:31,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:50:31,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:31,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:50:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:31,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 184 proven. 156 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2020-10-29 07:50:31,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053847367] [2020-10-29 07:50:31,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:31,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:50:31,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690869756] [2020-10-29 07:50:31,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:50:31,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:31,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:50:31,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:50:31,552 INFO L87 Difference]: Start difference. First operand 6776 states and 8565 transitions. Second operand 7 states. [2020-10-29 07:50:35,286 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:50:49,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:49,715 INFO L93 Difference]: Finished difference Result 14229 states and 18386 transitions. [2020-10-29 07:50:49,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:50:49,718 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 486 [2020-10-29 07:50:49,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:49,743 INFO L225 Difference]: With dead ends: 14229 [2020-10-29 07:50:49,743 INFO L226 Difference]: Without dead ends: 8071 [2020-10-29 07:50:49,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:50:49,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8071 states. [2020-10-29 07:50:49,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8071 to 8037. [2020-10-29 07:50:49,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8037 states. [2020-10-29 07:50:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8037 states to 8037 states and 9968 transitions. [2020-10-29 07:50:49,972 INFO L78 Accepts]: Start accepts. Automaton has 8037 states and 9968 transitions. Word has length 486 [2020-10-29 07:50:49,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:49,973 INFO L481 AbstractCegarLoop]: Abstraction has 8037 states and 9968 transitions. [2020-10-29 07:50:49,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:50:49,973 INFO L276 IsEmpty]: Start isEmpty. Operand 8037 states and 9968 transitions. [2020-10-29 07:50:49,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2020-10-29 07:50:49,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:49,983 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:49,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:50:49,984 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:49,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:49,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1611761228, now seen corresponding path program 1 times [2020-10-29 07:50:49,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:49,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299466302] [2020-10-29 07:50:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:50,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:50,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:51,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:52,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:54,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:54,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 529 [2020-10-29 07:50:54,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:50:54,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4163 [2020-10-29 07:50:54,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:54,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:54,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:54,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:50:54,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 07:50:54,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:54,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:54,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:54,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:54,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:54,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:54,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:50:54,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:54,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:54,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:54,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:54,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:54,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:54,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:54,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:50:54,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:54,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 07:50:54,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:54,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:54,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:54,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:50:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:54,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:54,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:54,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:50:54,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:54,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 07:50:54,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:54,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:54,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:50:54,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:54,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:50:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:54,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:54,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:55,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:55,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:55,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 07:50:55,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:50:55,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-29 07:50:55,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:55,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:55,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:55,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:55,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 07:50:55,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:50:55,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299466302] [2020-10-29 07:50:55,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:55,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:50:55,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370726040] [2020-10-29 07:50:55,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:50:55,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:55,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:50:55,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:50:55,424 INFO L87 Difference]: Start difference. First operand 8037 states and 9968 transitions. Second operand 7 states. [2020-10-29 07:51:12,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:12,475 INFO L93 Difference]: Finished difference Result 18370 states and 23715 transitions. [2020-10-29 07:51:12,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:51:12,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 513 [2020-10-29 07:51:12,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:12,524 INFO L225 Difference]: With dead ends: 18370 [2020-10-29 07:51:12,524 INFO L226 Difference]: Without dead ends: 10646 [2020-10-29 07:51:12,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:51:12,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10646 states. [2020-10-29 07:51:12,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10646 to 10281. [2020-10-29 07:51:12,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10281 states. [2020-10-29 07:51:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10281 states to 10281 states and 12612 transitions. [2020-10-29 07:51:12,831 INFO L78 Accepts]: Start accepts. Automaton has 10281 states and 12612 transitions. Word has length 513 [2020-10-29 07:51:12,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:12,833 INFO L481 AbstractCegarLoop]: Abstraction has 10281 states and 12612 transitions. [2020-10-29 07:51:12,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:51:12,833 INFO L276 IsEmpty]: Start isEmpty. Operand 10281 states and 12612 transitions. [2020-10-29 07:51:12,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2020-10-29 07:51:12,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:12,845 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:12,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:51:12,846 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:12,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:12,846 INFO L82 PathProgramCache]: Analyzing trace with hash -333188687, now seen corresponding path program 1 times [2020-10-29 07:51:12,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:12,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599058686] [2020-10-29 07:51:12,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:13,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:13,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:13,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:15,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:16,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:18,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:18,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 632 [2020-10-29 07:51:18,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:51:18,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 07:51:18,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:18,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:51:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:51:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:51:18,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:18,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:18,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:18,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:18,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:18,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:18,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:51:18,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:18,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:18,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:18,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:18,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:18,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:18,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:51:18,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:18,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:51:18,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:18,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:18,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:18,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:18,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:18,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:18,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:51:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:18,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:18,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:18,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:51:18,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:18,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 07:51:18,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:18,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:18,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:18,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:51:18,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:18,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:51:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:18,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:18,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:18,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:18,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 07:51:18,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:51:18,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 07:51:18,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:18,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:18,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 07:51:18,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:18,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-10-29 07:51:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:18,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:18,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:18,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 07:51:18,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:18,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 07:51:18,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:18,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:18,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 07:51:18,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 475 proven. 96 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-29 07:51:19,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599058686] [2020-10-29 07:51:19,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:19,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:51:19,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038690892] [2020-10-29 07:51:19,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:51:19,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:19,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:51:19,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:51:19,293 INFO L87 Difference]: Start difference. First operand 10281 states and 12612 transitions. Second operand 8 states. [2020-10-29 07:51:23,090 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 65