/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/bor2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:03:30,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:03:30,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:03:30,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:03:30,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:03:30,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:03:30,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:03:30,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:03:30,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:03:30,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:03:30,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:03:30,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:03:30,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:03:30,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:03:30,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:03:30,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:03:30,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:03:30,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:03:30,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:03:30,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:03:30,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:03:30,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:03:30,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:03:30,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:03:30,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:03:30,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:03:30,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:03:30,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:03:30,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:03:30,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:03:30,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:03:30,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:03:30,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:03:30,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:03:30,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:03:30,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:03:30,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:03:30,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:03:30,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:03:30,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:03:30,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:03:30,216 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 [2020-10-27 14:03:30,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:03:30,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:03:30,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:03:30,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:03:30,270 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:03:30,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:03:30,270 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:03:30,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:03:30,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:03:30,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:03:30,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:03:30,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:03:30,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:03:30,273 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:03:30,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:03:30,273 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:03:30,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:03:30,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:03:30,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:03:30,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:03:30,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:03:30,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:03:30,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:03:30,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:03:30,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:03:30,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:03:30,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:03:30,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:03:30,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:03:30,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:03:30,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:03:30,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:03:30,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:03:30,716 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:03:30,716 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:03:30,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor2.i [2020-10-27 14:03:30,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8fc5c7a0/54734c73e2ac437b9a25e2cc1320b906/FLAGdcb779795 [2020-10-27 14:03:31,489 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:03:31,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bor2.i [2020-10-27 14:03:31,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8fc5c7a0/54734c73e2ac437b9a25e2cc1320b906/FLAGdcb779795 [2020-10-27 14:03:31,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8fc5c7a0/54734c73e2ac437b9a25e2cc1320b906 [2020-10-27 14:03:31,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:03:31,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:03:31,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:03:31,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:03:31,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:03:31,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:03:31" (1/1) ... [2020-10-27 14:03:31,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd2ef6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:31, skipping insertion in model container [2020-10-27 14:03:31,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:03:31" (1/1) ... [2020-10-27 14:03:31,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:03:31,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:03:32,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:03:32,126 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:03:32,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:03:32,173 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:03:32,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:32 WrapperNode [2020-10-27 14:03:32,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:03:32,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:03:32,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:03:32,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:03:32,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:32" (1/1) ... [2020-10-27 14:03:32,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:32" (1/1) ... [2020-10-27 14:03:32,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:32" (1/1) ... [2020-10-27 14:03:32,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:32" (1/1) ... [2020-10-27 14:03:32,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:32" (1/1) ... [2020-10-27 14:03:32,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:32" (1/1) ... [2020-10-27 14:03:32,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:32" (1/1) ... [2020-10-27 14:03:32,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:03:32,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:03:32,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:03:32,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:03:32,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:32" (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 [2020-10-27 14:03:32,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:03:32,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:03:32,326 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:03:32,326 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2020-10-27 14:03:32,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:03:32,327 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:03:32,327 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:03:32,327 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:03:32,328 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:03:32,328 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:03:32,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:03:32,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:03:32,328 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2020-10-27 14:03:32,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:03:32,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:03:32,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:03:32,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:03:32,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:03:32,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:03:32,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:03:32,735 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:03:32,736 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:03:32,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:03:32 BoogieIcfgContainer [2020-10-27 14:03:32,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:03:32,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:03:32,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:03:32,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:03:32,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:03:31" (1/3) ... [2020-10-27 14:03:32,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0ce644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:03:32, skipping insertion in model container [2020-10-27 14:03:32,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:32" (2/3) ... [2020-10-27 14:03:32,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0ce644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:03:32, skipping insertion in model container [2020-10-27 14:03:32,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:03:32" (3/3) ... [2020-10-27 14:03:32,747 INFO L111 eAbstractionObserver]: Analyzing ICFG bor2.i [2020-10-27 14:03:32,760 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:03:32,766 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:03:32,783 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:03:32,812 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:03:32,812 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:03:32,812 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:03:32,812 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:03:32,812 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:03:32,813 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:03:32,813 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:03:32,813 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:03:32,831 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 14:03:32,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:03:32,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:32,842 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:32,843 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:32,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:32,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1900796497, now seen corresponding path program 1 times [2020-10-27 14:03:32,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:32,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818746833] [2020-10-27 14:03:32,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:33,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:33,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:03:33,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:33,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-10-27 14:03:33,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:03:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:33,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:03:33,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:33,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:33,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:33,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:33,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 14:03:33,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:33,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:33,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:33,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:33,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:33,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:33,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:33,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:33,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:33,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:03:33,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:33,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:33,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:33,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:33,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 14:03:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:33,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:33,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:33,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:33,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 14:03:33,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:33,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:33,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:03:33,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:03:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:33,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:33,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:33,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:33,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:33,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 14:03:33,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:33,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:03:33,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:33,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:03:34,001 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:03:34,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818746833] [2020-10-27 14:03:34,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:03:34,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:03:34,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260584340] [2020-10-27 14:03:34,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:03:34,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:34,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:03:34,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:03:34,034 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-27 14:03:34,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:34,196 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-27 14:03:34,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:03:34,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 14:03:34,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:34,211 INFO L225 Difference]: With dead ends: 60 [2020-10-27 14:03:34,211 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 14:03:34,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:03:34,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 14:03:34,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 14:03:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 14:03:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-27 14:03:34,276 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-27 14:03:34,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:34,283 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-27 14:03:34,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:03:34,285 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-27 14:03:34,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:03:34,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:34,290 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:34,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:03:34,291 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:34,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:34,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1640105647, now seen corresponding path program 1 times [2020-10-27 14:03:34,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:34,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565679624] [2020-10-27 14:03:34,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:34,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:34,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:34,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:34,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:34,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:35,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:03:35,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:35,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1407 [2020-10-27 14:03:35,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:35,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:35,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:03:35,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:35,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:35,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:35,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:35,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:35,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:35,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:03:35,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:35,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:35,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:35,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:35,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:35,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:35,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:35,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:35,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:35,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:03:35,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:35,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:35,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:35,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:35,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:35,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 14:03:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:35,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:35,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:35,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:35,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 14:03:35,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:35,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:35,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:35,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:03:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:35,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:35,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:35,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:03:35,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:35,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 14:03:35,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:35,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:35,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:35,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:03:35,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:03:35,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565679624] [2020-10-27 14:03:35,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:03:35,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:03:35,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632626300] [2020-10-27 14:03:35,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:03:35,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:35,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:03:35,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:03:35,899 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-27 14:03:36,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:36,003 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-27 14:03:36,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:03:36,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-27 14:03:36,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:36,005 INFO L225 Difference]: With dead ends: 49 [2020-10-27 14:03:36,005 INFO L226 Difference]: Without dead ends: 30 [2020-10-27 14:03:36,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:03:36,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-27 14:03:36,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-27 14:03:36,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 14:03:36,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-27 14:03:36,016 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-27 14:03:36,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:36,017 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-27 14:03:36,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:03:36,017 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-27 14:03:36,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 14:03:36,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:36,019 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:36,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:03:36,019 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:36,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:36,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1866427439, now seen corresponding path program 1 times [2020-10-27 14:03:36,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:36,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712092708] [2020-10-27 14:03:36,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:36,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:36,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:39,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:03:39,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:39,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3097 [2020-10-27 14:03:39,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:39,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:39,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 14:03:39,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:39,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:39,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:39,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:39,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:39,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:39,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:03:39,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:39,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:39,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:39,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:39,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:39,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:39,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 14:03:39,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:39,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:39,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 14:03:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:39,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:39,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:39,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:39,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 14:03:39,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:39,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:39,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:39,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:39,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:39,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:03:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:39,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:39,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 14:03:39,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:39,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:03:39,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:39,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:03:39,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:39,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:03:39,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:03:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 14:03:39,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712092708] [2020-10-27 14:03:39,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:39,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:03:39,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526081000] [2020-10-27 14:03:39,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:03:39,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:39,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:03:39,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:03:39,278 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-27 14:03:39,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:39,429 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-27 14:03:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:03:39,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-27 14:03:39,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:39,431 INFO L225 Difference]: With dead ends: 52 [2020-10-27 14:03:39,431 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 14:03:39,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:03:39,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 14:03:39,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-27 14:03:39,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 14:03:39,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-27 14:03:39,441 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 40 [2020-10-27 14:03:39,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:39,441 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-27 14:03:39,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:03:39,441 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-27 14:03:39,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 14:03:39,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:39,443 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:39,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:03:39,443 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:39,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:39,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1194393741, now seen corresponding path program 2 times [2020-10-27 14:03:39,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:39,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040424258] [2020-10-27 14:03:39,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:39,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:39,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:40,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:44,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:03:44,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:44,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:03:44,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 14:03:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:44,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:44,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:44,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:44,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:44,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:44,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:03:44,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:44,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:44,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:44,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:44,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:44,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:44,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:44,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:03:44,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:44,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 14:03:44,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:44,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:44,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:44,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:44,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:44,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 14:03:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:44,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:44,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:03:44,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:44,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 14:03:44,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:44,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:44,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:44,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:03:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:44,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:44,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 14:03:44,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:44,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 14:03:44,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:03:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:44,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:44,648 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 14:03:44,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040424258] [2020-10-27 14:03:44,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:44,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:03:44,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214350800] [2020-10-27 14:03:44,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:03:44,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:44,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:03:44,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:03:44,652 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-27 14:03:44,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:44,880 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-27 14:03:44,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:03:44,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-27 14:03:44,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:44,882 INFO L225 Difference]: With dead ends: 56 [2020-10-27 14:03:44,882 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 14:03:44,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:03:44,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 14:03:44,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-27 14:03:44,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 14:03:44,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-27 14:03:44,897 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-27 14:03:44,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:44,897 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-27 14:03:44,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:03:44,898 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-27 14:03:44,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 14:03:44,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:44,900 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:44,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:03:44,900 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:44,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:44,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1945310827, now seen corresponding path program 3 times [2020-10-27 14:03:44,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:44,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548750155] [2020-10-27 14:03:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:44,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:44,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:45,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:49,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:03:49,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:49,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:03:49,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:49,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:49,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 14:03:49,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:49,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:49,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:49,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:49,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:49,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:49,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:49,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 14:03:49,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:49,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:49,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:49,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:49,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 14:03:49,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:50,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:50,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:50,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:50,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:03:50,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:50,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 14:03:50,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:50,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:50,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:50,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:50,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:03:50,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 14:03:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:50,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:50,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:50,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:50,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:03:50,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:50,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 14:03:50,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:50,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:03:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:50,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:50,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:50,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 14:03:50,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:50,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 14:03:50,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:50,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:50,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:50,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:03:50,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 14:03:50,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548750155] [2020-10-27 14:03:50,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:50,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:03:50,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297734396] [2020-10-27 14:03:50,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:03:50,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:50,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:03:50,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:03:50,145 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2020-10-27 14:03:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:50,379 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-27 14:03:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:03:50,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-27 14:03:50,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:50,382 INFO L225 Difference]: With dead ends: 60 [2020-10-27 14:03:50,382 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 14:03:50,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:03:50,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 14:03:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-27 14:03:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 14:03:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-27 14:03:50,396 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 52 [2020-10-27 14:03:50,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:50,397 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-27 14:03:50,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:03:50,397 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-27 14:03:50,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 14:03:50,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:50,401 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:50,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:03:50,402 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:50,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:50,403 INFO L82 PathProgramCache]: Analyzing trace with hash -2080502327, now seen corresponding path program 4 times [2020-10-27 14:03:50,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:50,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548422033] [2020-10-27 14:03:50,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:50,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:50,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:50,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:50,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:51,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:55,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 14:03:55,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:03:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:03:55,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:03:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 14:03:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:03:55,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:55,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:55,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:55,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:55,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:55,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:03:55,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:55,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:55,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:55,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:55,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:55,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:03:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:55,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:55,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:03:55,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 14:03:55,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:03:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:55,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:03:55,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:55,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 14:03:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:55,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:55,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:03:55,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:03:55,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 14:03:55,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:55,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:03:55,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:55,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:03:55,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:55,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:03:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:55,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:55,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 14:03:55,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:55,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 14:03:55,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:55,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:03:55,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:03:55,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:03:55,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 14:03:55,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548422033] [2020-10-27 14:03:55,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:55,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:03:55,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383980316] [2020-10-27 14:03:55,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:03:55,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:55,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:03:55,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:03:55,655 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2020-10-27 14:03:55,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:55,902 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-27 14:03:55,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:03:55,903 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-27 14:03:55,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:55,904 INFO L225 Difference]: With dead ends: 64 [2020-10-27 14:03:55,904 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 14:03:55,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:03:55,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 14:03:55,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-27 14:03:55,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 14:03:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-27 14:03:55,912 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 58 [2020-10-27 14:03:55,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:55,913 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-27 14:03:55,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:03:55,913 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-27 14:03:55,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 14:03:55,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:55,914 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:55,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:03:55,915 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:55,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:55,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1013073575, now seen corresponding path program 5 times [2020-10-27 14:03:55,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:55,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202417326] [2020-10-27 14:03:55,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:55,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:55,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:57,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:00,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:00,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 14:04:00,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:00,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:04:00,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:00,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:04:00,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 14:04:00,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:04:00,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:01,089 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-10-27 14:04:01,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:01,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:01,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:01,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:01,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:01,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:04:01,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:01,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:01,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:01,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:01,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:01,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:01,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:01,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:01,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:01,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:04:01,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:01,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 14:04:01,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:04:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:04:01,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:01,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 14:04:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:01,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:01,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:01,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:01,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:04:01,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:01,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 14:04:01,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:04:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:04:01,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:01,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:04:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:01,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:01,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:01,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 14:04:01,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:01,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 14:04:01,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:04:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:04:01,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:01,299 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 14:04:01,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202417326] [2020-10-27 14:04:01,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:01,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:04:01,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301159660] [2020-10-27 14:04:01,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:04:01,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:01,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:04:01,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:04:01,302 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 9 states. [2020-10-27 14:04:01,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:01,676 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-27 14:04:01,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:04:01,677 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-27 14:04:01,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:01,678 INFO L225 Difference]: With dead ends: 68 [2020-10-27 14:04:01,678 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 14:04:01,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:04:01,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 14:04:01,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-27 14:04:01,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:04:01,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-27 14:04:01,693 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-27 14:04:01,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:01,695 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-27 14:04:01,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:04:01,696 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-27 14:04:01,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 14:04:01,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:01,697 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:01,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:04:01,698 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:01,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:01,701 INFO L82 PathProgramCache]: Analyzing trace with hash 247996677, now seen corresponding path program 6 times [2020-10-27 14:04:01,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:01,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464665825] [2020-10-27 14:04:01,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:01,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:01,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:01,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:01,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:03,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:06,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 14:04:06,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:06,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:04:06,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 14:04:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:06,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:06,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:06,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:06,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:06,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:06,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:06,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:06,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:06,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:06,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:06,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:06,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:06,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:06,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:04:06,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:06,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 14:04:06,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:06,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:06,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:06,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 14:04:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:06,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:06,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:04:06,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:06,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 14:04:06,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:06,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:06,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:06,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:06,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:06,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:04:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:06,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:06,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:06,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 14:04:06,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:06,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 14:04:06,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:06,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:04:06,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:06,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:04:06,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 14:04:06,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464665825] [2020-10-27 14:04:06,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:06,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:04:06,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014552277] [2020-10-27 14:04:06,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:04:06,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:06,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:04:06,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:04:06,992 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 10 states. [2020-10-27 14:04:07,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:07,396 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-27 14:04:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:04:07,396 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-27 14:04:07,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:07,397 INFO L225 Difference]: With dead ends: 72 [2020-10-27 14:04:07,397 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 14:04:07,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:04:07,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 14:04:07,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-27 14:04:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 14:04:07,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-27 14:04:07,408 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 70 [2020-10-27 14:04:07,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:07,409 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-27 14:04:07,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:04:07,409 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-27 14:04:07,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 14:04:07,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:07,410 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:07,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:04:07,411 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:07,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:07,411 INFO L82 PathProgramCache]: Analyzing trace with hash 258997475, now seen corresponding path program 7 times [2020-10-27 14:04:07,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:07,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110597339] [2020-10-27 14:04:07,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:07,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:07,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:07,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:07,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:08,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:12,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 14:04:12,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:12,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:04:12,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:12,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:12,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 14:04:12,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:12,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:12,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:12,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:12,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:12,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:12,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:04:12,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:12,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:12,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:12,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:12,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:04:12,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:12,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 14:04:12,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:12,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:12,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:04:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:12,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:12,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:04:12,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:12,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 14:04:12,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:12,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:12,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:04:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:12,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:12,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:12,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 14:04:12,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:12,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 14:04:12,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:12,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:04:12,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:12,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:04:12,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:12,721 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 14:04:12,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110597339] [2020-10-27 14:04:12,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:12,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:04:12,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137322890] [2020-10-27 14:04:12,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:04:12,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:12,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:04:12,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:04:12,724 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 11 states. [2020-10-27 14:04:13,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:13,198 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-27 14:04:13,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:04:13,199 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-27 14:04:13,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:13,200 INFO L225 Difference]: With dead ends: 76 [2020-10-27 14:04:13,200 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 14:04:13,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:04:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 14:04:13,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-27 14:04:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-27 14:04:13,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-27 14:04:13,210 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 76 [2020-10-27 14:04:13,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:13,210 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-27 14:04:13,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:04:13,210 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-27 14:04:13,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 14:04:13,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:13,212 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:13,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:04:13,212 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:13,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:13,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1798453825, now seen corresponding path program 8 times [2020-10-27 14:04:13,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:13,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661998711] [2020-10-27 14:04:13,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:13,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:13,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:13,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:13,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:15,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:18,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:18,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 14:04:18,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:18,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:04:18,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 14:04:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:18,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:18,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:18,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:18,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:18,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:18,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:18,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:04:18,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:18,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:18,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:18,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:18,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:18,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:18,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:04:18,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:18,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 14:04:18,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:18,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:18,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:04:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:18,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:18,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:18,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:18,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:04:18,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:18,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 14:04:18,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:18,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:18,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:04:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:18,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:18,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:18,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:04:18,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:18,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 14:04:18,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:18,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:04:18,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:18,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:04:18,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:18,514 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-27 14:04:18,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661998711] [2020-10-27 14:04:18,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:18,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:04:18,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957437230] [2020-10-27 14:04:18,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:04:18,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:18,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:04:18,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:04:18,517 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 12 states. [2020-10-27 14:04:19,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:19,037 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-27 14:04:19,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:04:19,037 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-27 14:04:19,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:19,038 INFO L225 Difference]: With dead ends: 80 [2020-10-27 14:04:19,038 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 14:04:19,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:04:19,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 14:04:19,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-27 14:04:19,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 14:04:19,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-27 14:04:19,047 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 82 [2020-10-27 14:04:19,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:19,048 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-27 14:04:19,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:04:19,048 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-27 14:04:19,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 14:04:19,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:19,049 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:19,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:04:19,050 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:19,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:19,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1568618783, now seen corresponding path program 9 times [2020-10-27 14:04:19,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:19,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429181445] [2020-10-27 14:04:19,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:19,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:19,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:19,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:19,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:21,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:24,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:24,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 14:04:24,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:24,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:04:24,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 14:04:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:24,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:24,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:24,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:24,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:24,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:24,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:24,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:04:24,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:24,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:24,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:24,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:24,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:24,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:24,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:24,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:24,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:24,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:04:24,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:24,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 14:04:24,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:24,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:24,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:24,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:04:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:24,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:24,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:24,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:24,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:04:24,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:24,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 14:04:24,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:24,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:24,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:04:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:24,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:24,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:24,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:04:24,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:24,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 14:04:24,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:24,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:04:24,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:24,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:04:24,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 14:04:24,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429181445] [2020-10-27 14:04:24,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:24,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:04:24,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776917328] [2020-10-27 14:04:24,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:04:24,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:24,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:04:24,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:04:24,360 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-10-27 14:04:24,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:24,878 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-27 14:04:24,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:04:24,878 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-27 14:04:24,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:24,879 INFO L225 Difference]: With dead ends: 84 [2020-10-27 14:04:24,879 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 14:04:24,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:04:24,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 14:04:24,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-27 14:04:24,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-27 14:04:24,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-27 14:04:24,888 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 88 [2020-10-27 14:04:24,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:24,888 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-27 14:04:24,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:04:24,889 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-27 14:04:24,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 14:04:24,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:24,890 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:24,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:04:24,890 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:24,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:24,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1503700611, now seen corresponding path program 10 times [2020-10-27 14:04:24,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:24,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337437126] [2020-10-27 14:04:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:24,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:24,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:24,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:24,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:27,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:29,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:29,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 14:04:29,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:04:29,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:04:29,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 14:04:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:29,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:29,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:29,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:29,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:29,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:29,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:04:29,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:29,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:29,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:29,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:29,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:29,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:29,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:04:29,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 14:04:29,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:30,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:04:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:30,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:30,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:30,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:30,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:04:30,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:30,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 14:04:30,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:30,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:30,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:30,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:30,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:30,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:04:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:30,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:30,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:30,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:04:30,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:30,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 14:04:30,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:30,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:04:30,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:30,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:04:30,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 14:04:30,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337437126] [2020-10-27 14:04:30,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:30,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:04:30,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518665074] [2020-10-27 14:04:30,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:04:30,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:30,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:04:30,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:04:30,259 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 14 states. [2020-10-27 14:04:30,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:30,834 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-27 14:04:30,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:04:30,835 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-27 14:04:30,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:30,837 INFO L225 Difference]: With dead ends: 88 [2020-10-27 14:04:30,837 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 14:04:30,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:04:30,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 14:04:30,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-27 14:04:30,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 14:04:30,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-27 14:04:30,845 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 94 [2020-10-27 14:04:30,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:30,846 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-27 14:04:30,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:04:30,846 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-27 14:04:30,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 14:04:30,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:30,847 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:30,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:04:30,848 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:30,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:30,848 INFO L82 PathProgramCache]: Analyzing trace with hash -2139948197, now seen corresponding path program 11 times [2020-10-27 14:04:30,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:30,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990846612] [2020-10-27 14:04:30,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:30,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:30,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:30,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:30,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:35,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:35,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 14:04:35,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:35,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:04:35,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:35,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:04:35,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 14:04:35,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:04:35,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:35,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:35,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:35,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:35,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:35,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:35,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:04:35,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:35,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:35,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:35,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:35,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:36,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:36,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:04:36,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:36,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 14:04:36,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:36,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:04:36,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:36,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:04:36,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:36,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:04:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:36,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:36,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:36,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:36,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:04:36,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:36,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 14:04:36,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:36,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:04:36,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:36,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:04:36,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:36,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:04:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:36,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:36,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:36,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:36,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 14:04:36,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:36,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 14:04:36,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 14:04:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:36,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:36,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 121 proven. 899 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-27 14:04:36,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990846612] [2020-10-27 14:04:36,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:36,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:04:36,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045947959] [2020-10-27 14:04:36,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:04:36,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:36,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:04:36,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:04:36,362 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-27 14:04:37,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:37,009 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2020-10-27 14:04:37,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:04:37,009 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 100 [2020-10-27 14:04:37,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:37,011 INFO L225 Difference]: With dead ends: 94 [2020-10-27 14:04:37,011 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 14:04:37,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:04:37,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 14:04:37,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-27 14:04:37,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 14:04:37,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-27 14:04:37,031 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 100 [2020-10-27 14:04:37,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:37,031 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-27 14:04:37,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:04:37,032 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-27 14:04:37,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 14:04:37,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:37,034 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:37,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:04:37,034 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:37,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:37,038 INFO L82 PathProgramCache]: Analyzing trace with hash -328628169, now seen corresponding path program 1 times [2020-10-27 14:04:37,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:37,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472766591] [2020-10-27 14:04:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:37,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:37,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:37,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:37,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:42,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:42,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 14:04:42,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:42,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:04:42,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:04:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 14:04:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:04:42,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:42,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:42,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:42,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:42,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:42,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:42,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:04:42,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:42,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:42,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:42,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:42,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:42,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:42,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:04:42,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:42,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 14:04:42,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:04:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:04:42,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:42,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:04:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:42,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:42,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:42,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:04:42,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:42,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 14:04:42,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:42,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:04:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:04:42,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:04:42,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:04:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:42,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:42,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:42,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:42,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:04:42,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:42,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 14:04:42,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:42,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 14:04:42,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:42,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:04:42,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 144 proven. 1065 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-27 14:04:42,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472766591] [2020-10-27 14:04:42,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:42,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:04:42,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979620626] [2020-10-27 14:04:42,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:04:42,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:42,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:04:42,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:04:42,701 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 18 states. [2020-10-27 14:04:43,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:43,445 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2020-10-27 14:04:43,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:04:43,445 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-10-27 14:04:43,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:43,446 INFO L225 Difference]: With dead ends: 101 [2020-10-27 14:04:43,447 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 14:04:43,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=320, Invalid=610, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:04:43,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 14:04:43,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-27 14:04:43,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 14:04:43,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-10-27 14:04:43,456 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 108 [2020-10-27 14:04:43,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:43,456 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-10-27 14:04:43,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:04:43,456 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-10-27 14:04:43,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 14:04:43,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:43,458 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:43,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:04:43,458 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:43,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:43,459 INFO L82 PathProgramCache]: Analyzing trace with hash -803250157, now seen corresponding path program 2 times [2020-10-27 14:04:43,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:43,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478179498] [2020-10-27 14:04:43,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:43,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:43,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:43,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:43,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:48,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:48,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 14:04:48,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:48,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:04:48,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:04:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 14:04:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:04:48,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:48,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:48,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:48,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:48,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:48,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:48,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:04:48,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:48,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:48,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:48,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:48,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:48,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:48,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:48,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:48,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:48,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:04:48,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:48,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 14:04:48,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:48,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:04:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:04:48,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:04:48,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:04:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:48,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:49,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:49,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:04:49,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:49,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 14:04:49,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:49,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:04:49,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:49,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:04:49,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:04:49,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:04:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:49,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:49,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:49,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:49,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:04:49,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:49,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 14:04:49,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 14:04:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:49,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 169 proven. 1247 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-10-27 14:04:49,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478179498] [2020-10-27 14:04:49,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:49,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:04:49,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688447700] [2020-10-27 14:04:49,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:04:49,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:49,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:04:49,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:04:49,201 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 20 states. [2020-10-27 14:04:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:49,946 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2020-10-27 14:04:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:04:49,946 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 116 [2020-10-27 14:04:49,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:49,947 INFO L225 Difference]: With dead ends: 109 [2020-10-27 14:04:49,948 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 14:04:49,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=369, Invalid=753, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:04:49,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 14:04:49,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-10-27 14:04:49,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-27 14:04:49,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-10-27 14:04:49,957 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 116 [2020-10-27 14:04:49,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:49,957 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-10-27 14:04:49,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:04:49,957 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-10-27 14:04:49,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 14:04:49,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:49,959 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:49,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:04:49,959 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:49,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:49,960 INFO L82 PathProgramCache]: Analyzing trace with hash 691225327, now seen corresponding path program 3 times [2020-10-27 14:04:49,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:49,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678590080] [2020-10-27 14:04:49,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:49,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:49,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:50,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:50,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:54,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:54,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 14:04:54,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:04:54,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:04:54,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:54,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:04:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 14:04:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:04:54,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:55,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:04:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:55,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:55,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:55,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:04:55,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:04:55,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:04:55,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:55,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:55,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:04:55,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:55,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:55,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:04:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:55,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:55,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:55,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:55,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:04:55,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:55,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 14:04:55,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:55,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:04:55,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:55,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:04:55,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:04:55,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:04:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:55,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:55,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:55,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:55,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:04:55,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:55,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 14:04:55,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:55,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:04:55,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:04:55,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:04:55,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:55,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:04:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:55,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:55,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:55,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:04:55,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:04:55,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:04:55,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 14:04:55,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:04:55,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:04:55,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:04:55,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:04:55,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:04:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 196 proven. 1445 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-27 14:04:55,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678590080] [2020-10-27 14:04:55,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:04:55,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:04:55,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834823172] [2020-10-27 14:04:55,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:04:55,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:04:55,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:04:55,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:04:55,834 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 22 states. [2020-10-27 14:04:56,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:04:56,663 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2020-10-27 14:04:56,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:04:56,665 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 124 [2020-10-27 14:04:56,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:04:56,666 INFO L225 Difference]: With dead ends: 117 [2020-10-27 14:04:56,666 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 14:04:56,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=422, Invalid=910, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:04:56,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 14:04:56,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-27 14:04:56,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 14:04:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-10-27 14:04:56,686 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 124 [2020-10-27 14:04:56,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:04:56,687 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-10-27 14:04:56,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:04:56,687 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-10-27 14:04:56,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 14:04:56,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:04:56,690 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:04:56,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:04:56,691 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:04:56,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:04:56,691 INFO L82 PathProgramCache]: Analyzing trace with hash 699658443, now seen corresponding path program 4 times [2020-10-27 14:04:56,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:04:56,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099491910] [2020-10-27 14:04:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:04:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:04:56,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:56,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:56,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:04:56,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:01,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:01,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 14:05:01,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:01,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:05:01,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:01,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:05:01,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 14:05:01,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:05:01,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:01,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:01,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:01,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:01,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:01,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:01,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:01,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:01,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:01,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:01,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:01,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:01,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:01,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:01,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:01,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:01,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:05:01,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:01,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 14:05:01,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:01,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:05:01,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:01,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:05:01,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:02,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:05:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:02,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:02,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:02,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:02,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:05:02,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:02,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 14:05:02,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:05:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:02,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:05:02,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:02,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:05:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:02,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:02,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:02,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:02,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:05:02,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:02,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 14:05:02,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:05:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:02,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 225 proven. 1659 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-10-27 14:05:02,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099491910] [2020-10-27 14:05:02,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:02,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:05:02,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803259087] [2020-10-27 14:05:02,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:05:02,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:02,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:05:02,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:05:02,424 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 24 states. [2020-10-27 14:05:03,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:03,342 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2020-10-27 14:05:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:05:03,342 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 132 [2020-10-27 14:05:03,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:03,344 INFO L225 Difference]: With dead ends: 125 [2020-10-27 14:05:03,344 INFO L226 Difference]: Without dead ends: 70 [2020-10-27 14:05:03,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=479, Invalid=1081, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:05:03,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-27 14:05:03,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-27 14:05:03,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 14:05:03,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-10-27 14:05:03,360 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 132 [2020-10-27 14:05:03,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:03,361 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-10-27 14:05:03,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:05:03,361 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-10-27 14:05:03,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 14:05:03,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:03,364 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:03,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:05:03,364 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:03,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:03,365 INFO L82 PathProgramCache]: Analyzing trace with hash 606087591, now seen corresponding path program 5 times [2020-10-27 14:05:03,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:03,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715783246] [2020-10-27 14:05:03,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:03,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:03,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:03,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:03,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:08,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:08,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 14:05:08,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:08,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:05:08,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:05:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 14:05:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:05:08,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:08,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:08,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:08,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:08,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:08,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:08,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:05:08,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:08,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:08,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:08,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:08,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:08,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:08,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:08,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:08,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:08,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:05:08,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:08,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 14:05:08,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:08,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:05:08,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:08,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:05:08,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:08,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:05:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:08,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:08,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:08,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:08,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:05:08,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:08,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 14:05:08,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:08,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:05:08,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:08,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:05:08,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:08,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:05:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:08,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:08,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:09,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:09,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:05:09,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:09,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 14:05:09,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:09,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:09,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 14:05:09,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:09,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2440 backedges. 256 proven. 1889 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-27 14:05:09,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715783246] [2020-10-27 14:05:09,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:09,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:05:09,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28973207] [2020-10-27 14:05:09,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:05:09,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:09,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:05:09,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:05:09,090 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 26 states. [2020-10-27 14:05:10,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:10,185 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2020-10-27 14:05:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:05:10,186 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 140 [2020-10-27 14:05:10,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:10,187 INFO L225 Difference]: With dead ends: 133 [2020-10-27 14:05:10,187 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 14:05:10,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=540, Invalid=1266, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:05:10,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 14:05:10,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-27 14:05:10,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 14:05:10,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-10-27 14:05:10,195 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 140 [2020-10-27 14:05:10,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:10,196 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-10-27 14:05:10,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:05:10,196 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-10-27 14:05:10,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 14:05:10,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:10,198 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:10,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:05:10,198 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:10,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:10,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2003217795, now seen corresponding path program 6 times [2020-10-27 14:05:10,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:10,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533315155] [2020-10-27 14:05:10,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:10,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:10,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:10,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:10,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:15,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:15,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 14:05:15,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:15,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:05:15,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:05:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 14:05:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:05:15,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:15,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:15,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:15,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:15,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:15,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:15,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:05:15,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:15,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:15,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:15,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:15,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:15,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:15,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:15,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:15,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:15,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:05:15,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 14:05:15,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:05:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:05:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:15,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:05:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:15,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:15,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:15,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:15,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:05:15,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:15,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 14:05:15,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:05:15,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:15,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:05:15,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:15,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:05:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:15,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:15,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:15,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:15,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:05:15,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:15,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 14:05:15,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:15,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:15,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 14:05:15,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:15,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2754 backedges. 289 proven. 2135 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-10-27 14:05:15,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533315155] [2020-10-27 14:05:15,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:15,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:05:15,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291900591] [2020-10-27 14:05:15,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:05:15,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:15,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:05:15,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:05:15,999 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 28 states. [2020-10-27 14:05:17,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:17,205 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2020-10-27 14:05:17,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:05:17,206 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 148 [2020-10-27 14:05:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:17,207 INFO L225 Difference]: With dead ends: 141 [2020-10-27 14:05:17,207 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 14:05:17,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=605, Invalid=1465, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:05:17,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 14:05:17,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-27 14:05:17,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 14:05:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-10-27 14:05:17,216 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 148 [2020-10-27 14:05:17,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:17,216 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-10-27 14:05:17,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:05:17,216 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-10-27 14:05:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-27 14:05:17,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:17,218 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:17,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:05:17,219 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:17,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:17,219 INFO L82 PathProgramCache]: Analyzing trace with hash 2061909087, now seen corresponding path program 7 times [2020-10-27 14:05:17,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:17,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679308056] [2020-10-27 14:05:17,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:17,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:17,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:17,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:17,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:22,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:22,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 14:05:22,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:22,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 14:05:22,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:05:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 14:05:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:05:22,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:22,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:22,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:22,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:22,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:22,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:22,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:22,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:22,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:22,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:22,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:22,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:22,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:22,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:22,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:22,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:22,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:05:22,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:22,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 14:05:22,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:22,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:05:22,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:22,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:05:22,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:22,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:05:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:22,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:22,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:23,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:23,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:05:23,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-27 14:05:23,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:05:23,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:23,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:05:23,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:23,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 14:05:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:23,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:23,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:23,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:23,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 14:05:23,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:23,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 14:05:23,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 14:05:23,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:23,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3088 backedges. 324 proven. 2397 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2020-10-27 14:05:23,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679308056] [2020-10-27 14:05:23,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:23,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:05:23,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528523764] [2020-10-27 14:05:23,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:05:23,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:23,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:05:23,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=614, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:05:23,296 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 30 states. [2020-10-27 14:05:24,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:24,596 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2020-10-27 14:05:24,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:05:24,597 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 156 [2020-10-27 14:05:24,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:24,598 INFO L225 Difference]: With dead ends: 149 [2020-10-27 14:05:24,598 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 14:05:24,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=674, Invalid=1678, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 14:05:24,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 14:05:24,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-10-27 14:05:24,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 14:05:24,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-10-27 14:05:24,606 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 156 [2020-10-27 14:05:24,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:24,606 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-10-27 14:05:24,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:05:24,607 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-10-27 14:05:24,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 14:05:24,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:24,609 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:24,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:05:24,609 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:24,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:24,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1785566779, now seen corresponding path program 8 times [2020-10-27 14:05:24,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:24,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385149629] [2020-10-27 14:05:24,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:24,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:24,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:24,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:24,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:29,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:29,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 14:05:29,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:29,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:05:29,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:05:29,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-27 14:05:29,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:05:29,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:29,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:29,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:29,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:29,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:29,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:29,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:29,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:29,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:29,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:29,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:29,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:29,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:29,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:05:29,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:29,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 14:05:29,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:05:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:05:29,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:30,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:05:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:30,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:30,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:30,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:30,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:05:30,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:30,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-27 14:05:30,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:30,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:05:30,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:30,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:05:30,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:30,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:05:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:30,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:30,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:30,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:30,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:05:30,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:30,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 14:05:30,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:30,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:30,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 14:05:30,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:30,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:30,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3442 backedges. 361 proven. 2675 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2020-10-27 14:05:30,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385149629] [2020-10-27 14:05:30,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:30,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:05:30,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725471189] [2020-10-27 14:05:30,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:05:30,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:30,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:05:30,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:05:30,708 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 32 states. [2020-10-27 14:05:32,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:32,076 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2020-10-27 14:05:32,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:05:32,076 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 164 [2020-10-27 14:05:32,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:32,077 INFO L225 Difference]: With dead ends: 157 [2020-10-27 14:05:32,078 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 14:05:32,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=747, Invalid=1905, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 14:05:32,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 14:05:32,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-10-27 14:05:32,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:05:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-10-27 14:05:32,095 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 164 [2020-10-27 14:05:32,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:32,095 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-10-27 14:05:32,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:05:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-10-27 14:05:32,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-27 14:05:32,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:32,099 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:32,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:05:32,100 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:32,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:32,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1379629847, now seen corresponding path program 9 times [2020-10-27 14:05:32,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:32,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256623016] [2020-10-27 14:05:32,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:32,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:32,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:32,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:32,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:37,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:37,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-27 14:05:37,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:37,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:05:37,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:37,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:05:37,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 14:05:37,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:05:37,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:37,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:37,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:37,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:37,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:37,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:37,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:05:37,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:37,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:37,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:37,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:37,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:37,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:37,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:05:37,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:37,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 14:05:37,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:37,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:05:37,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:37,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:05:37,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:37,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:05:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:37,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:37,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:38,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:38,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:05:38,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:38,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 14:05:38,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:05:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:05:38,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:38,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 14:05:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:38,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:38,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:38,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:38,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 14:05:38,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:38,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 14:05:38,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:38,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:38,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 14:05:38,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:38,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 400 proven. 2969 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2020-10-27 14:05:38,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256623016] [2020-10-27 14:05:38,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:38,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 14:05:38,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69820341] [2020-10-27 14:05:38,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 14:05:38,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:38,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 14:05:38,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:05:38,216 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 34 states. [2020-10-27 14:05:39,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:39,735 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-10-27 14:05:39,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:05:39,735 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 172 [2020-10-27 14:05:39,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:39,736 INFO L225 Difference]: With dead ends: 165 [2020-10-27 14:05:39,737 INFO L226 Difference]: Without dead ends: 90 [2020-10-27 14:05:39,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=824, Invalid=2146, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 14:05:39,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-27 14:05:39,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-10-27 14:05:39,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 14:05:39,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2020-10-27 14:05:39,745 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 172 [2020-10-27 14:05:39,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:39,746 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2020-10-27 14:05:39,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 14:05:39,746 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2020-10-27 14:05:39,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-27 14:05:39,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:39,747 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:39,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:05:39,748 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:39,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:39,748 INFO L82 PathProgramCache]: Analyzing trace with hash -83973389, now seen corresponding path program 10 times [2020-10-27 14:05:39,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:39,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380609391] [2020-10-27 14:05:39,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:39,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:39,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:39,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:39,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:44,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:44,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 14:05:44,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:44,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 14:05:44,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:44,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:05:44,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 14:05:44,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:05:44,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:44,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:44,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:44,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:44,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:44,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:44,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:44,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:44,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:44,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:44,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:44,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:45,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:45,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:05:45,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:45,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 14:05:45,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:45,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:05:45,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:45,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:05:45,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:45,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:05:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:45,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:45,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:45,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:45,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:05:45,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:45,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 14:05:45,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:45,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:05:45,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:45,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:05:45,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:45,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 14:05:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:45,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:45,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:45,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:45,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:05:45,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:45,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 14:05:45,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:45,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:45,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 14:05:45,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:45,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4210 backedges. 441 proven. 3279 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2020-10-27 14:05:45,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380609391] [2020-10-27 14:05:45,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:45,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 14:05:45,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764798443] [2020-10-27 14:05:45,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 14:05:45,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:46,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 14:05:46,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=905, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:05:46,000 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 36 states. [2020-10-27 14:05:47,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:47,550 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2020-10-27 14:05:47,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:05:47,551 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 180 [2020-10-27 14:05:47,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:47,552 INFO L225 Difference]: With dead ends: 173 [2020-10-27 14:05:47,552 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 14:05:47,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=905, Invalid=2401, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 14:05:47,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 14:05:47,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-10-27 14:05:47,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 14:05:47,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-10-27 14:05:47,561 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 180 [2020-10-27 14:05:47,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:47,561 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-10-27 14:05:47,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 14:05:47,561 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-10-27 14:05:47,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 14:05:47,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:47,563 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:47,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:05:47,563 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:47,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:47,563 INFO L82 PathProgramCache]: Analyzing trace with hash -707402289, now seen corresponding path program 11 times [2020-10-27 14:05:47,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:47,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099942692] [2020-10-27 14:05:47,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:47,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:47,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:47,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:47,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:52,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:52,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-27 14:05:52,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:05:52,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:05:52,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:05:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-27 14:05:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:05:52,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:52,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:05:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:52,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:52,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:52,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:05:52,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:05:52,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:05:52,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:52,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:52,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:05:52,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:52,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:52,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:05:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:52,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:52,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:52,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:05:52,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:52,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 14:05:52,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:52,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:05:52,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:52,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:05:52,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:53,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:05:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:53,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:53,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:53,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:53,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:05:53,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:53,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 14:05:53,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:53,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:05:53,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:05:53,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:05:53,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:53,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 14:05:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:53,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:53,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:05:53,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:05:53,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:05:53,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 14:05:53,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:05:53,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:05:53,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:05:53,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:05:53,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:05:53,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 484 proven. 3605 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2020-10-27 14:05:53,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099942692] [2020-10-27 14:05:53,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:05:53,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 14:05:53,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69311537] [2020-10-27 14:05:53,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 14:05:53,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:05:53,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 14:05:53,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=1014, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:05:53,920 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 38 states. [2020-10-27 14:05:55,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:05:55,697 INFO L93 Difference]: Finished difference Result 181 states and 192 transitions. [2020-10-27 14:05:55,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:05:55,698 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 188 [2020-10-27 14:05:55,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:05:55,700 INFO L225 Difference]: With dead ends: 181 [2020-10-27 14:05:55,700 INFO L226 Difference]: Without dead ends: 98 [2020-10-27 14:05:55,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=990, Invalid=2670, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 14:05:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-27 14:05:55,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-27 14:05:55,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 14:05:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2020-10-27 14:05:55,708 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 188 [2020-10-27 14:05:55,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:05:55,708 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2020-10-27 14:05:55,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 14:05:55,708 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2020-10-27 14:05:55,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 14:05:55,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:05:55,710 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:05:55,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:05:55,710 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:05:55,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:05:55,711 INFO L82 PathProgramCache]: Analyzing trace with hash -397415509, now seen corresponding path program 12 times [2020-10-27 14:05:55,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:05:55,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002367242] [2020-10-27 14:05:55,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:05:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:05:55,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:55,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:55,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:05:55,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:00,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:00,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-27 14:06:00,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:00,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:06:00,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:00,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:06:00,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-27 14:06:00,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:06:00,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:00,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:00,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:00,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:00,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:00,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:00,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:00,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:00,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:00,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:00,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:00,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:00,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:00,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:00,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:01,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:01,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:06:01,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:01,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 14:06:01,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:01,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:06:01,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:01,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:06:01,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:01,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:06:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:01,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:01,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:01,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:01,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:06:01,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:01,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 14:06:01,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:01,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:06:01,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:01,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:06:01,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:01,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 14:06:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:01,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:01,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:02,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:02,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 14:06:02,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:02,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-27 14:06:02,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:02,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:02,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 14:06:02,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:02,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5058 backedges. 529 proven. 3947 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2020-10-27 14:06:02,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002367242] [2020-10-27 14:06:02,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:02,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 14:06:02,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181635469] [2020-10-27 14:06:02,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 14:06:02,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:02,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 14:06:02,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=1129, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:06:02,183 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand 40 states. [2020-10-27 14:06:03,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:03,872 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2020-10-27 14:06:03,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:06:03,873 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 196 [2020-10-27 14:06:03,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:03,874 INFO L225 Difference]: With dead ends: 189 [2020-10-27 14:06:03,875 INFO L226 Difference]: Without dead ends: 102 [2020-10-27 14:06:03,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1079, Invalid=2953, Unknown=0, NotChecked=0, Total=4032 [2020-10-27 14:06:03,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-27 14:06:03,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-27 14:06:03,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 14:06:03,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2020-10-27 14:06:03,884 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 196 [2020-10-27 14:06:03,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:03,884 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2020-10-27 14:06:03,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 14:06:03,884 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2020-10-27 14:06:03,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 14:06:03,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:03,886 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:03,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:06:03,886 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:03,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:03,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1200915321, now seen corresponding path program 13 times [2020-10-27 14:06:03,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:03,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404911067] [2020-10-27 14:06:03,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:03,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:03,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:03,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:04,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:08,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:08,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-27 14:06:08,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:08,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 14:06:08,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:08,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:06:08,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-27 14:06:08,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:06:08,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:09,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:09,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:09,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:09,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:09,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:09,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:09,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:09,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:09,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:09,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:09,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:09,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:09,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:06:09,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:09,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 14:06:09,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:09,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:06:09,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:09,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:06:09,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:10,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:06:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:10,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:10,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:10,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:10,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:06:10,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:10,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 14:06:10,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:06:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:06:10,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:10,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-27 14:06:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:10,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:10,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:10,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:10,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:06:10,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:10,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-27 14:06:10,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 14:06:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:10,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:10,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 576 proven. 4305 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2020-10-27 14:06:10,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404911067] [2020-10-27 14:06:10,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:10,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-27 14:06:10,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118570060] [2020-10-27 14:06:10,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-27 14:06:10,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:10,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-27 14:06:10,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=1250, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:06:10,473 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand 42 states. [2020-10-27 14:06:12,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:12,497 INFO L93 Difference]: Finished difference Result 197 states and 208 transitions. [2020-10-27 14:06:12,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 14:06:12,498 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 204 [2020-10-27 14:06:12,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:12,499 INFO L225 Difference]: With dead ends: 197 [2020-10-27 14:06:12,499 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 14:06:12,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1172, Invalid=3250, Unknown=0, NotChecked=0, Total=4422 [2020-10-27 14:06:12,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 14:06:12,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-27 14:06:12,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 14:06:12,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-10-27 14:06:12,508 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 204 [2020-10-27 14:06:12,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:12,508 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-10-27 14:06:12,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-27 14:06:12,509 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-10-27 14:06:12,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-27 14:06:12,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:12,510 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:12,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:06:12,510 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:12,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:12,511 INFO L82 PathProgramCache]: Analyzing trace with hash 949442659, now seen corresponding path program 14 times [2020-10-27 14:06:12,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:12,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996917007] [2020-10-27 14:06:12,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:12,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:12,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:12,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:12,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:17,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:17,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 14:06:17,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:17,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:06:17,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:17,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:06:17,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-27 14:06:17,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:06:17,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:17,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:17,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:17,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:17,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:17,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:17,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:06:17,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:17,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:17,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:17,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:17,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:17,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:17,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:06:17,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:17,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 14:06:17,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:06:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:17,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:06:17,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:18,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:06:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:18,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:18,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:18,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:18,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:06:18,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:18,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 14:06:18,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:06:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:06:18,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:18,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 14:06:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:18,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:18,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:19,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:19,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:06:19,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:19,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 14:06:19,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 14:06:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:19,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 5986 backedges. 625 proven. 4679 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2020-10-27 14:06:19,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996917007] [2020-10-27 14:06:19,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:19,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-27 14:06:19,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582513124] [2020-10-27 14:06:19,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-27 14:06:19,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:19,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-27 14:06:19,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1377, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 14:06:19,083 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 44 states. [2020-10-27 14:06:21,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:21,240 INFO L93 Difference]: Finished difference Result 205 states and 216 transitions. [2020-10-27 14:06:21,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 14:06:21,240 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 212 [2020-10-27 14:06:21,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:21,242 INFO L225 Difference]: With dead ends: 205 [2020-10-27 14:06:21,242 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 14:06:21,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1269, Invalid=3561, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 14:06:21,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 14:06:21,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2020-10-27 14:06:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-27 14:06:21,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2020-10-27 14:06:21,251 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 212 [2020-10-27 14:06:21,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:21,252 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2020-10-27 14:06:21,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-27 14:06:21,252 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2020-10-27 14:06:21,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-27 14:06:21,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:21,254 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:21,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:06:21,254 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:21,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:21,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1280164033, now seen corresponding path program 15 times [2020-10-27 14:06:21,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:21,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940655638] [2020-10-27 14:06:21,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:21,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:21,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:21,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:21,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:26,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:26,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-27 14:06:26,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:26,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:06:26,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:06:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-27 14:06:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:06:26,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:26,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:26,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:26,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:26,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:26,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:26,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:26,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:26,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:26,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:26,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:26,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:26,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:26,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:06:26,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:26,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-27 14:06:26,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:26,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:06:26,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:26,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:06:26,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:27,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:06:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:27,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:27,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:27,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:27,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:06:27,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:27,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 14:06:27,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:27,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:06:27,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:27,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:06:27,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:27,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-27 14:06:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:27,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:27,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:28,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:28,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:06:28,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:28,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-27 14:06:28,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 14:06:28,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:28,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 676 proven. 5069 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2020-10-27 14:06:28,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940655638] [2020-10-27 14:06:28,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:28,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-27 14:06:28,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628101150] [2020-10-27 14:06:28,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-27 14:06:28,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:28,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-27 14:06:28,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=1510, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:06:28,194 INFO L87 Difference]: Start difference. First operand 108 states and 112 transitions. Second operand 46 states. [2020-10-27 14:06:30,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:30,448 INFO L93 Difference]: Finished difference Result 213 states and 224 transitions. [2020-10-27 14:06:30,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 14:06:30,449 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 220 [2020-10-27 14:06:30,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:30,450 INFO L225 Difference]: With dead ends: 213 [2020-10-27 14:06:30,450 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 14:06:30,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1370, Invalid=3886, Unknown=0, NotChecked=0, Total=5256 [2020-10-27 14:06:30,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 14:06:30,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-27 14:06:30,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 14:06:30,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2020-10-27 14:06:30,459 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 220 [2020-10-27 14:06:30,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:30,459 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2020-10-27 14:06:30,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-27 14:06:30,459 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2020-10-27 14:06:30,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-27 14:06:30,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:30,461 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:30,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:06:30,461 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:30,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:30,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1190465253, now seen corresponding path program 16 times [2020-10-27 14:06:30,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:30,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466337371] [2020-10-27 14:06:30,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:30,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:30,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:30,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:30,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:35,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:35,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-27 14:06:35,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:35,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:06:35,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:06:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-27 14:06:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:06:35,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:35,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:35,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:35,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:35,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:35,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:35,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:06:35,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:35,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:35,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:35,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:35,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:35,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:35,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:06:35,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:35,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 14:06:35,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:35,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:06:35,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:35,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:06:35,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:36,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:06:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:36,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:37,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:37,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:37,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:06:37,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:37,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-27 14:06:37,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:37,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:06:37,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:37,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:06:37,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:37,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-27 14:06:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:37,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:37,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:37,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:37,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:06:37,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:37,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-27 14:06:37,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:37,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:37,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 14:06:37,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:37,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6994 backedges. 729 proven. 5475 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2020-10-27 14:06:37,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466337371] [2020-10-27 14:06:37,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:37,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-27 14:06:37,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164264222] [2020-10-27 14:06:37,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-27 14:06:37,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:37,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-27 14:06:37,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=1649, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 14:06:37,462 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 48 states. [2020-10-27 14:06:39,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:39,819 INFO L93 Difference]: Finished difference Result 221 states and 232 transitions. [2020-10-27 14:06:39,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 14:06:39,820 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 228 [2020-10-27 14:06:39,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:39,821 INFO L225 Difference]: With dead ends: 221 [2020-10-27 14:06:39,822 INFO L226 Difference]: Without dead ends: 118 [2020-10-27 14:06:39,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1475, Invalid=4225, Unknown=0, NotChecked=0, Total=5700 [2020-10-27 14:06:39,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-27 14:06:39,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-10-27 14:06:39,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 14:06:39,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2020-10-27 14:06:39,829 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 228 [2020-10-27 14:06:39,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:39,830 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 120 transitions. [2020-10-27 14:06:39,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-27 14:06:39,830 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 120 transitions. [2020-10-27 14:06:39,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-27 14:06:39,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:39,832 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:39,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:06:39,832 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:39,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:39,832 INFO L82 PathProgramCache]: Analyzing trace with hash 140520951, now seen corresponding path program 17 times [2020-10-27 14:06:39,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:39,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551621708] [2020-10-27 14:06:39,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:39,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:39,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:39,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:39,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:44,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:44,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 14:06:44,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:44,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:06:44,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:06:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 14:06:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:06:44,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:45,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:45,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:45,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:45,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:45,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:45,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:06:45,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:45,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:45,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:45,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:45,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:45,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:45,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:45,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:45,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:06:45,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:45,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-27 14:06:45,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:45,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:06:45,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:45,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:06:45,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:46,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:06:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:46,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:46,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:46,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:46,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:06:46,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:46,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 14:06:46,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:46,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:06:46,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:46,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:06:46,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:46,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-27 14:06:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:46,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:46,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:46,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:46,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:06:46,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:46,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 14:06:46,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:46,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:46,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 14:06:46,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:46,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 7528 backedges. 784 proven. 5897 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2020-10-27 14:06:46,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551621708] [2020-10-27 14:06:46,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:46,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-27 14:06:46,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123882205] [2020-10-27 14:06:46,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-27 14:06:46,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:46,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-27 14:06:46,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=656, Invalid=1794, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 14:06:46,813 INFO L87 Difference]: Start difference. First operand 116 states and 120 transitions. Second operand 50 states. [2020-10-27 14:06:49,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:49,408 INFO L93 Difference]: Finished difference Result 229 states and 240 transitions. [2020-10-27 14:06:49,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-27 14:06:49,408 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 236 [2020-10-27 14:06:49,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:49,410 INFO L225 Difference]: With dead ends: 229 [2020-10-27 14:06:49,410 INFO L226 Difference]: Without dead ends: 122 [2020-10-27 14:06:49,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1584, Invalid=4578, Unknown=0, NotChecked=0, Total=6162 [2020-10-27 14:06:49,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-27 14:06:49,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2020-10-27 14:06:49,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-27 14:06:49,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2020-10-27 14:06:49,425 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 236 [2020-10-27 14:06:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:49,425 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2020-10-27 14:06:49,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-27 14:06:49,425 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2020-10-27 14:06:49,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-27 14:06:49,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:49,428 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:49,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:06:49,428 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:49,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:49,429 INFO L82 PathProgramCache]: Analyzing trace with hash 2111878611, now seen corresponding path program 18 times [2020-10-27 14:06:49,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:49,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265745861] [2020-10-27 14:06:49,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:49,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:49,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:49,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:49,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:54,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:54,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-27 14:06:54,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:06:54,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:06:54,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:06:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-27 14:06:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:06:54,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:54,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:06:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:54,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:54,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:54,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:06:54,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:06:54,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:06:54,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:54,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:54,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:06:54,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:54,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:54,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:06:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:54,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:54,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:55,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:55,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:06:55,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:55,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-27 14:06:55,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:06:55,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:55,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:06:55,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:56,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:06:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:56,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:56,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:56,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:56,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:06:56,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:56,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 14:06:56,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:56,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:06:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:06:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:06:56,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:56,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-27 14:06:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:56,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:56,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:56,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:06:56,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:06:56,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:06:56,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 14:06:56,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:06:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:06:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-27 14:06:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:06:56,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:06:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8082 backedges. 841 proven. 6335 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2020-10-27 14:06:56,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265745861] [2020-10-27 14:06:56,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:06:56,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-27 14:06:56,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797453194] [2020-10-27 14:06:56,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-27 14:06:56,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:06:56,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-27 14:06:56,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=1945, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 14:06:56,598 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand 52 states. [2020-10-27 14:06:59,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:06:59,291 INFO L93 Difference]: Finished difference Result 237 states and 248 transitions. [2020-10-27 14:06:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-27 14:06:59,292 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 244 [2020-10-27 14:06:59,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:06:59,293 INFO L225 Difference]: With dead ends: 237 [2020-10-27 14:06:59,294 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 14:06:59,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1697, Invalid=4945, Unknown=0, NotChecked=0, Total=6642 [2020-10-27 14:06:59,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 14:06:59,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-10-27 14:06:59,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 14:06:59,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 128 transitions. [2020-10-27 14:06:59,303 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 128 transitions. Word has length 244 [2020-10-27 14:06:59,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:06:59,303 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 128 transitions. [2020-10-27 14:06:59,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-27 14:06:59,303 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 128 transitions. [2020-10-27 14:06:59,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 14:06:59,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:06:59,305 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:06:59,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:06:59,305 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:06:59,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:06:59,306 INFO L82 PathProgramCache]: Analyzing trace with hash -30717777, now seen corresponding path program 19 times [2020-10-27 14:06:59,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:06:59,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412461243] [2020-10-27 14:06:59,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:06:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:06:59,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:59,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:59,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:06:59,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:04,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:04,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 14:07:04,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:07:04,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:07:04,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:07:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 14:07:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:07:04,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:04,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:04,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:04,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:04,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:04,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:04,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:07:04,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:04,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:04,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:04,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:04,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:04,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:04,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:07:04,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:04,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-27 14:07:04,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:07:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:07:04,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:06,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:07:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:06,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:06,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:06,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:06,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:07:06,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:06,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 14:07:06,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:07:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:07:06,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:06,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-27 14:07:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:06,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:06,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:06,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:06,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:07:06,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:06,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-27 14:07:06,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:06,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:06,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 14:07:06,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:06,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8656 backedges. 900 proven. 6789 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2020-10-27 14:07:06,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412461243] [2020-10-27 14:07:06,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:07:06,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-27 14:07:06,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360742116] [2020-10-27 14:07:06,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-27 14:07:06,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:07:06,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-27 14:07:06,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=760, Invalid=2102, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 14:07:06,492 INFO L87 Difference]: Start difference. First operand 124 states and 128 transitions. Second operand 54 states. [2020-10-27 14:07:09,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:07:09,367 INFO L93 Difference]: Finished difference Result 245 states and 256 transitions. [2020-10-27 14:07:09,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-27 14:07:09,368 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 252 [2020-10-27 14:07:09,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:07:09,370 INFO L225 Difference]: With dead ends: 245 [2020-10-27 14:07:09,370 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 14:07:09,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1814, Invalid=5326, Unknown=0, NotChecked=0, Total=7140 [2020-10-27 14:07:09,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 14:07:09,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-10-27 14:07:09,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-27 14:07:09,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 132 transitions. [2020-10-27 14:07:09,379 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 132 transitions. Word has length 252 [2020-10-27 14:07:09,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:07:09,380 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 132 transitions. [2020-10-27 14:07:09,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-27 14:07:09,380 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 132 transitions. [2020-10-27 14:07:09,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-27 14:07:09,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:07:09,382 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:07:09,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:07:09,382 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:07:09,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:07:09,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1649321611, now seen corresponding path program 20 times [2020-10-27 14:07:09,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:07:09,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438020489] [2020-10-27 14:07:09,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:07:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:09,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:09,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:09,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:09,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:14,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:14,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 14:07:14,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:07:14,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:07:14,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:14,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:07:14,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-27 14:07:14,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:07:14,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:14,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:07:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:14,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:14,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:14,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:07:14,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:07:14,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:07:14,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:07:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:07:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:07:14,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:07:14,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:07:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:07:14,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:14,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:07:15,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:07:15,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 14:07:15,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:07:15,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-27 14:07:15,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:07:15,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 14:07:15,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:07:15,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 14:07:15,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0