/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:30:12,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:30:12,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:30:12,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:30:12,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:30:12,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:30:12,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:30:12,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:30:12,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:30:12,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:30:12,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:30:12,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:30:12,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:30:12,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:30:12,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:30:12,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:30:12,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:30:12,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:30:12,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:30:12,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:30:12,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:30:12,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:30:12,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:30:12,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:30:12,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:30:12,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:30:12,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:30:12,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:30:12,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:30:12,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:30:12,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:30:12,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:30:12,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:30:12,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:30:12,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:30:12,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:30:12,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:30:12,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:30:12,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:30:12,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:30:12,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:30:12,300 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:30:12,325 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:30:12,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:30:12,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:30:12,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:30:12,328 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:30:12,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:30:12,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:30:12,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:30:12,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:30:12,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:30:12,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:30:12,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:30:12,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:30:12,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:30:12,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:30:12,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:30:12,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:30:12,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:30:12,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:30:12,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:30:12,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:30:12,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:30:12,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:30:12,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:30:12,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:30:12,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:30:12,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:30:12,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:30:12,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:30:12,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:30:12,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:30:12,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:30:12,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:30:12,778 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:30:12,779 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:30:12,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label44.c [2020-10-26 23:30:12,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdf854586/8aadded4cce049a1b9b589830d473b1b/FLAG1d6332728 [2020-10-26 23:30:13,542 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:30:13,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label44.c [2020-10-26 23:30:13,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdf854586/8aadded4cce049a1b9b589830d473b1b/FLAG1d6332728 [2020-10-26 23:30:13,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdf854586/8aadded4cce049a1b9b589830d473b1b [2020-10-26 23:30:13,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:30:13,798 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:30:13,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:30:13,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:30:13,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:30:13,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:30:13" (1/1) ... [2020-10-26 23:30:13,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187ad513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:13, skipping insertion in model container [2020-10-26 23:30:13,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:30:13" (1/1) ... [2020-10-26 23:30:13,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:30:13,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:30:14,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:30:14,436 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:30:14,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:30:14,640 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:30:14,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:14 WrapperNode [2020-10-26 23:30:14,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:30:14,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:30:14,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:30:14,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:30:14,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:14" (1/1) ... [2020-10-26 23:30:14,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:14" (1/1) ... [2020-10-26 23:30:14,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:14" (1/1) ... [2020-10-26 23:30:14,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:14" (1/1) ... [2020-10-26 23:30:14,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:14" (1/1) ... [2020-10-26 23:30:14,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:14" (1/1) ... [2020-10-26 23:30:14,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:14" (1/1) ... [2020-10-26 23:30:14,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:30:14,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:30:14,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:30:14,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:30:14,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:30:14,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:30:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:30:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:30:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:30:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:30:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:30:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:30:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:30:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:30:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:30:14,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:30:14,871 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:30:14,871 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:30:14,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:30:14,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:30:14,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:30:14,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:30:14,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:30:14,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:30:16,816 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:30:16,816 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:30:16,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:30:16 BoogieIcfgContainer [2020-10-26 23:30:16,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:30:16,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:30:16,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:30:16,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:30:16,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:30:13" (1/3) ... [2020-10-26 23:30:16,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d2c36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:30:16, skipping insertion in model container [2020-10-26 23:30:16,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:14" (2/3) ... [2020-10-26 23:30:16,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d2c36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:30:16, skipping insertion in model container [2020-10-26 23:30:16,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:30:16" (3/3) ... [2020-10-26 23:30:16,828 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label44.c [2020-10-26 23:30:16,839 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:30:16,845 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:30:16,858 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:30:16,887 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:30:16,888 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:30:16,888 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:30:16,888 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:30:16,888 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:30:16,888 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:30:16,889 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:30:16,889 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:30:16,912 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:30:16,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 23:30:16,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:16,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:16,919 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:16,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:16,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1495143936, now seen corresponding path program 1 times [2020-10-26 23:30:16,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:16,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290709278] [2020-10-26 23:30:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:17,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:17,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:17,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-26 23:30:17,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:17,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-26 23:30:17,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 23:30:17,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 23:30:17,662 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:30:17,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:17,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:17,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:17,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:17,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:17,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:30:17,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:17,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:30:17,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290709278] [2020-10-26 23:30:17,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:30:17,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:30:17,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526186880] [2020-10-26 23:30:17,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:30:17,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:17,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:30:17,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:30:17,782 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-26 23:30:17,953 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:30:20,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:20,061 INFO L93 Difference]: Finished difference Result 703 states and 1246 transitions. [2020-10-26 23:30:20,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:30:20,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-26 23:30:20,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:20,080 INFO L225 Difference]: With dead ends: 703 [2020-10-26 23:30:20,080 INFO L226 Difference]: Without dead ends: 381 [2020-10-26 23:30:20,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:30:20,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-26 23:30:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 377. [2020-10-26 23:30:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-26 23:30:20,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 553 transitions. [2020-10-26 23:30:20,176 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 553 transitions. Word has length 18 [2020-10-26 23:30:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:20,177 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 553 transitions. [2020-10-26 23:30:20,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:30:20,177 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 553 transitions. [2020-10-26 23:30:20,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-26 23:30:20,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:20,182 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:20,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:30:20,182 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:20,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:20,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1876314804, now seen corresponding path program 1 times [2020-10-26 23:30:20,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:20,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709159351] [2020-10-26 23:30:20,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:20,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:20,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:21,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:21,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-26 23:30:21,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:21,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 958 [2020-10-26 23:30:21,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:21,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:21,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:21,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:30:21,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:21,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:21,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:21,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:21,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:21,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:21,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:30:21,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:21,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:21,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:21,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:21,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:21,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:21,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:21,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:21,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:30:21,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:21,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-26 23:30:21,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:21,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:21,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:21,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:30:21,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:21,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:30:21,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709159351] [2020-10-26 23:30:21,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:30:21,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:30:21,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854354824] [2020-10-26 23:30:21,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:21,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:21,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:21,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:21,651 INFO L87 Difference]: Start difference. First operand 377 states and 553 transitions. Second operand 8 states. [2020-10-26 23:30:24,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:24,748 INFO L93 Difference]: Finished difference Result 1506 states and 2264 transitions. [2020-10-26 23:30:24,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:30:24,749 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-10-26 23:30:24,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:24,760 INFO L225 Difference]: With dead ends: 1506 [2020-10-26 23:30:24,760 INFO L226 Difference]: Without dead ends: 1135 [2020-10-26 23:30:24,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:30:24,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2020-10-26 23:30:24,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1123. [2020-10-26 23:30:24,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-10-26 23:30:24,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1580 transitions. [2020-10-26 23:30:24,882 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1580 transitions. Word has length 87 [2020-10-26 23:30:24,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:24,882 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1580 transitions. [2020-10-26 23:30:24,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:24,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1580 transitions. [2020-10-26 23:30:24,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-26 23:30:24,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:24,888 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:24,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:30:24,888 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:24,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:24,891 INFO L82 PathProgramCache]: Analyzing trace with hash 271965316, now seen corresponding path program 1 times [2020-10-26 23:30:24,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:24,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80104724] [2020-10-26 23:30:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:24,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:25,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 23:30:25,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-26 23:30:25,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 23:30:25,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:25,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:25,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:25,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:25,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:25,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:30:25,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:25,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:25,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:25,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:25,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:30:25,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:25,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:30:25,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:30:25,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:30:25,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80104724] [2020-10-26 23:30:25,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:30:25,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:30:25,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896453823] [2020-10-26 23:30:25,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:25,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:25,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:25,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:25,863 INFO L87 Difference]: Start difference. First operand 1123 states and 1580 transitions. Second operand 7 states. [2020-10-26 23:30:28,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:28,217 INFO L93 Difference]: Finished difference Result 3078 states and 4649 transitions. [2020-10-26 23:30:28,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:30:28,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-10-26 23:30:28,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:28,242 INFO L225 Difference]: With dead ends: 3078 [2020-10-26 23:30:28,242 INFO L226 Difference]: Without dead ends: 1961 [2020-10-26 23:30:28,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:30:28,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2020-10-26 23:30:28,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1877. [2020-10-26 23:30:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1877 states. [2020-10-26 23:30:28,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2484 transitions. [2020-10-26 23:30:28,378 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2484 transitions. Word has length 90 [2020-10-26 23:30:28,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:28,381 INFO L481 AbstractCegarLoop]: Abstraction has 1877 states and 2484 transitions. [2020-10-26 23:30:28,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:28,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2484 transitions. [2020-10-26 23:30:28,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-26 23:30:28,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:28,390 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:28,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:30:28,391 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:28,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:28,391 INFO L82 PathProgramCache]: Analyzing trace with hash 203989828, now seen corresponding path program 1 times [2020-10-26 23:30:28,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:28,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826379560] [2020-10-26 23:30:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:28,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:28,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:29,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:29,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-26 23:30:29,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:29,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-10-26 23:30:29,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:29,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:30:29,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:30:29,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:29,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:29,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:29,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:29,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:29,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:30:29,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:29,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:29,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:29,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:29,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:29,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:29,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:29,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:29,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:29,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:29,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-26 23:30:29,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:29,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:29,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:29,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:30:29,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:29,870 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:30:29,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826379560] [2020-10-26 23:30:29,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:30:29,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:30:29,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965823697] [2020-10-26 23:30:29,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:29,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:29,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:29,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:29,884 INFO L87 Difference]: Start difference. First operand 1877 states and 2484 transitions. Second operand 8 states. [2020-10-26 23:30:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:33,330 INFO L93 Difference]: Finished difference Result 3778 states and 5218 transitions. [2020-10-26 23:30:33,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:30:33,330 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 91 [2020-10-26 23:30:33,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:33,344 INFO L225 Difference]: With dead ends: 3778 [2020-10-26 23:30:33,345 INFO L226 Difference]: Without dead ends: 2641 [2020-10-26 23:30:33,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:30:33,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2020-10-26 23:30:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 2623. [2020-10-26 23:30:33,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2623 states. [2020-10-26 23:30:33,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 3421 transitions. [2020-10-26 23:30:33,429 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 3421 transitions. Word has length 91 [2020-10-26 23:30:33,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:33,430 INFO L481 AbstractCegarLoop]: Abstraction has 2623 states and 3421 transitions. [2020-10-26 23:30:33,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:33,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 3421 transitions. [2020-10-26 23:30:33,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-26 23:30:33,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:33,432 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:33,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:30:33,433 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:33,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:33,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1453168296, now seen corresponding path program 1 times [2020-10-26 23:30:33,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:33,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477558978] [2020-10-26 23:30:33,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:33,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:33,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:33,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:34,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:34,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-26 23:30:34,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:30:34,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 939 [2020-10-26 23:30:34,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:30:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:30:34,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:34,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:34,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:34,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:34,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:34,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:34,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:30:34,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:34,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:34,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:34,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:34,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:34,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:30:34,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:34,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:30:34,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:34,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:34,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:34,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:30:34,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:34,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:30:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:34,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:34,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:34,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:34,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:34,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:34,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 23:30:34,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:34,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:34,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:34,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:30:34,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:30:34,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477558978] [2020-10-26 23:30:34,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:34,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:34,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762972311] [2020-10-26 23:30:34,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:34,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:34,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:34,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:34,986 INFO L87 Difference]: Start difference. First operand 2623 states and 3421 transitions. Second operand 7 states. [2020-10-26 23:30:36,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:36,884 INFO L93 Difference]: Finished difference Result 4828 states and 6609 transitions. [2020-10-26 23:30:36,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:30:36,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-10-26 23:30:36,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:36,900 INFO L225 Difference]: With dead ends: 4828 [2020-10-26 23:30:36,900 INFO L226 Difference]: Without dead ends: 2309 [2020-10-26 23:30:36,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:30:36,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2020-10-26 23:30:36,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2253. [2020-10-26 23:30:36,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2253 states. [2020-10-26 23:30:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 2584 transitions. [2020-10-26 23:30:36,984 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 2584 transitions. Word has length 175 [2020-10-26 23:30:36,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:36,985 INFO L481 AbstractCegarLoop]: Abstraction has 2253 states and 2584 transitions. [2020-10-26 23:30:36,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:36,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 2584 transitions. [2020-10-26 23:30:36,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-26 23:30:36,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:36,991 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:36,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:30:36,991 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:36,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:36,992 INFO L82 PathProgramCache]: Analyzing trace with hash 841495948, now seen corresponding path program 1 times [2020-10-26 23:30:36,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:36,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080261885] [2020-10-26 23:30:36,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:37,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:37,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:37,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:39,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:39,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-26 23:30:39,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:30:39,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2953 [2020-10-26 23:30:39,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:39,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:30:39,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:30:39,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-26 23:30:39,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:40,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:40,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:40,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:40,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:40,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:40,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:30:40,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:30:40,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:40,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:40,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:40,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:40,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:40,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:40,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 23:30:40,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:40,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:40,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:40,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:30:40,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:40,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:40,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:40,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:40,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:40,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:40,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:30:40,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:40,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:40,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:40,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:30:40,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 21 proven. 68 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:30:40,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080261885] [2020-10-26 23:30:40,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:40,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:30:40,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608696337] [2020-10-26 23:30:40,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:30:40,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:40,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:30:40,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:30:40,869 INFO L87 Difference]: Start difference. First operand 2253 states and 2584 transitions. Second operand 9 states. [2020-10-26 23:30:42,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:42,891 INFO L93 Difference]: Finished difference Result 4716 states and 5543 transitions. [2020-10-26 23:30:42,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:30:42,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 201 [2020-10-26 23:30:42,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:42,914 INFO L225 Difference]: With dead ends: 4716 [2020-10-26 23:30:42,914 INFO L226 Difference]: Without dead ends: 2835 [2020-10-26 23:30:42,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:30:42,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2020-10-26 23:30:42,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2631. [2020-10-26 23:30:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2631 states. [2020-10-26 23:30:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 2976 transitions. [2020-10-26 23:30:43,014 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 2976 transitions. Word has length 201 [2020-10-26 23:30:43,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:43,015 INFO L481 AbstractCegarLoop]: Abstraction has 2631 states and 2976 transitions. [2020-10-26 23:30:43,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:30:43,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 2976 transitions. [2020-10-26 23:30:43,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-10-26 23:30:43,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:43,024 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:43,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:30:43,024 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:43,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:43,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1069277240, now seen corresponding path program 1 times [2020-10-26 23:30:43,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:43,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693227814] [2020-10-26 23:30:43,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:43,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:43,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:43,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:44,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:48,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:48,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-26 23:30:48,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:30:48,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-26 23:30:48,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:48,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:30:48,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:30:48,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-26 23:30:48,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:48,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:48,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:48,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:48,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:48,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:48,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:30:48,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:48,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:48,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:48,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:48,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:48,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:48,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:48,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:48,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:48,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:30:48,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:48,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:48,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:48,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:48,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:48,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:48,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:48,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:48,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:48,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:48,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 23:30:48,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:30:48,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:48,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:48,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:48,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:48,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:48,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:48,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-26 23:30:48,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:30:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:30:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:48,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:49,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:49,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:49,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:49,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:30:49,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:30:49,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 466 proven. 6 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 23:30:49,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693227814] [2020-10-26 23:30:49,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:49,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:30:49,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506283412] [2020-10-26 23:30:49,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:49,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:49,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:49,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:49,369 INFO L87 Difference]: Start difference. First operand 2631 states and 2976 transitions. Second operand 8 states. [2020-10-26 23:30:51,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:51,012 INFO L93 Difference]: Finished difference Result 5454 states and 6206 transitions. [2020-10-26 23:30:51,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:30:51,014 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 420 [2020-10-26 23:30:51,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:51,028 INFO L225 Difference]: With dead ends: 5454 [2020-10-26 23:30:51,028 INFO L226 Difference]: Without dead ends: 3195 [2020-10-26 23:30:51,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:30:51,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2020-10-26 23:30:51,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3001. [2020-10-26 23:30:51,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3001 states. [2020-10-26 23:30:51,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 3367 transitions. [2020-10-26 23:30:51,146 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 3367 transitions. Word has length 420 [2020-10-26 23:30:51,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:51,149 INFO L481 AbstractCegarLoop]: Abstraction has 3001 states and 3367 transitions. [2020-10-26 23:30:51,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:51,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 3367 transitions. [2020-10-26 23:30:51,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2020-10-26 23:30:51,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:51,167 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:51,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:30:51,168 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:51,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:51,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1123865120, now seen corresponding path program 1 times [2020-10-26 23:30:51,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:51,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994017419] [2020-10-26 23:30:51,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:51,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:51,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:54,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:54,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 647 [2020-10-26 23:30:54,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:54,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3512 [2020-10-26 23:30:54,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:54,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:54,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:30:54,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 23:30:54,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:54,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:54,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:54,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:54,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:54,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:54,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:30:54,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:54,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:55,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:55,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:55,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:55,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:30:55,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:55,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:55,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:55,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:55,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:55,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:55,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:55,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:30:55,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:55,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:55,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:55,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:55,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:55,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:55,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:55,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:30:55,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:55,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:55,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:55,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:55,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:30:55,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:55,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 23:30:55,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:55,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:55,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:30:55,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:55,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:30:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:55,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:55,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:55,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:30:55,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:55,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-26 23:30:55,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:55,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:30:55,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:56,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 500 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-26 23:30:56,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994017419] [2020-10-26 23:30:56,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:56,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:56,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436789678] [2020-10-26 23:30:56,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:56,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:56,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:56,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:56,139 INFO L87 Difference]: Start difference. First operand 3001 states and 3367 transitions. Second operand 7 states. [2020-10-26 23:30:57,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:57,819 INFO L93 Difference]: Finished difference Result 6944 states and 8055 transitions. [2020-10-26 23:30:57,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:30:57,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 627 [2020-10-26 23:30:57,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:57,849 INFO L225 Difference]: With dead ends: 6944 [2020-10-26 23:30:57,850 INFO L226 Difference]: Without dead ends: 4315 [2020-10-26 23:30:57,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:30:57,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4315 states. [2020-10-26 23:30:57,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4315 to 4303. [2020-10-26 23:30:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4303 states. [2020-10-26 23:30:57,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4303 states to 4303 states and 4954 transitions. [2020-10-26 23:30:57,968 INFO L78 Accepts]: Start accepts. Automaton has 4303 states and 4954 transitions. Word has length 627 [2020-10-26 23:30:57,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:57,970 INFO L481 AbstractCegarLoop]: Abstraction has 4303 states and 4954 transitions. [2020-10-26 23:30:57,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:57,970 INFO L276 IsEmpty]: Start isEmpty. Operand 4303 states and 4954 transitions. [2020-10-26 23:30:57,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2020-10-26 23:30:57,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:57,993 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:57,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:30:57,993 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:57,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:57,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1419702152, now seen corresponding path program 1 times [2020-10-26 23:30:57,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:57,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522161182] [2020-10-26 23:30:57,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:58,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:58,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:58,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:59,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 700 [2020-10-26 23:31:03,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:03,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 23:31:03,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:03,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:31:03,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:31:03,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:03,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:31:03,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:03,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:31:03,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:03,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 23:31:03,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:31:03,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:03,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 23:31:03,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:31:03,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:31:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:03,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-26 23:31:03,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-26 23:31:03,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2020-10-26 23:31:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:03,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:31:03,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-26 23:31:03,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2020-10-26 23:31:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:04,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:04,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:04,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:04,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:04,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:31:04,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:04,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:04,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:31:04,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:04,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:04,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 302 proven. 257 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2020-10-26 23:31:04,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522161182] [2020-10-26 23:31:04,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:04,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:04,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195391108] [2020-10-26 23:31:04,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:04,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:04,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:04,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:04,286 INFO L87 Difference]: Start difference. First operand 4303 states and 4954 transitions. Second operand 7 states. [2020-10-26 23:31:06,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:06,926 INFO L93 Difference]: Finished difference Result 10629 states and 12489 transitions. [2020-10-26 23:31:06,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:31:06,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 678 [2020-10-26 23:31:06,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:06,957 INFO L225 Difference]: With dead ends: 10629 [2020-10-26 23:31:06,957 INFO L226 Difference]: Without dead ends: 6698 [2020-10-26 23:31:06,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:31:06,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6698 states. [2020-10-26 23:31:07,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6698 to 6693. [2020-10-26 23:31:07,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6693 states. [2020-10-26 23:31:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6693 states to 6693 states and 7824 transitions. [2020-10-26 23:31:07,129 INFO L78 Accepts]: Start accepts. Automaton has 6693 states and 7824 transitions. Word has length 678 [2020-10-26 23:31:07,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:07,130 INFO L481 AbstractCegarLoop]: Abstraction has 6693 states and 7824 transitions. [2020-10-26 23:31:07,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:07,130 INFO L276 IsEmpty]: Start isEmpty. Operand 6693 states and 7824 transitions. [2020-10-26 23:31:07,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2020-10-26 23:31:07,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:07,139 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:07,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:31:07,139 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:07,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:07,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1669041028, now seen corresponding path program 1 times [2020-10-26 23:31:07,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:07,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635228938] [2020-10-26 23:31:07,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:07,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:07,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:11,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:11,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 770 [2020-10-26 23:31:11,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:11,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4637 [2020-10-26 23:31:11,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:11,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:11,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:31:11,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:31:11,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:12,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:12,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:12,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:31:12,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:12,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:31:12,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:12,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:31:12,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:12,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-26 23:31:12,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:12,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:12,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:31:12,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:31:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:31:12,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-26 23:31:12,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:12,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:12,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:31:12,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:12,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2020-10-26 23:31:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:12,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:12,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:12,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:12,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:12,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:31:12,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:12,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:12,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:31:12,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:12,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 574 proven. 72 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2020-10-26 23:31:13,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635228938] [2020-10-26 23:31:13,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:13,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:13,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914280589] [2020-10-26 23:31:13,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:13,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:13,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:13,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:13,318 INFO L87 Difference]: Start difference. First operand 6693 states and 7824 transitions. Second operand 7 states. [2020-10-26 23:31:15,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:15,135 INFO L93 Difference]: Finished difference Result 13022 states and 15276 transitions. [2020-10-26 23:31:15,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:31:15,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 748 [2020-10-26 23:31:15,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:15,159 INFO L225 Difference]: With dead ends: 13022 [2020-10-26 23:31:15,159 INFO L226 Difference]: Without dead ends: 6701 [2020-10-26 23:31:15,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:31:15,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6701 states. [2020-10-26 23:31:15,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6701 to 6697. [2020-10-26 23:31:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6697 states. [2020-10-26 23:31:15,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6697 states to 6697 states and 7713 transitions. [2020-10-26 23:31:15,324 INFO L78 Accepts]: Start accepts. Automaton has 6697 states and 7713 transitions. Word has length 748 [2020-10-26 23:31:15,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:15,325 INFO L481 AbstractCegarLoop]: Abstraction has 6697 states and 7713 transitions. [2020-10-26 23:31:15,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:15,325 INFO L276 IsEmpty]: Start isEmpty. Operand 6697 states and 7713 transitions. [2020-10-26 23:31:15,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2020-10-26 23:31:15,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:15,334 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:15,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:31:15,334 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:15,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:15,335 INFO L82 PathProgramCache]: Analyzing trace with hash 431250616, now seen corresponding path program 1 times [2020-10-26 23:31:15,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:15,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519185172] [2020-10-26 23:31:15,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:15,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:16,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:17,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:17,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 781 [2020-10-26 23:31:17,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:17,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2334 [2020-10-26 23:31:17,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:17,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:17,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:31:17,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:31:17,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:17,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:17,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:17,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:17,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:17,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:17,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:17,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:17,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:17,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:17,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:17,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:17,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:17,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:17,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:18,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:18,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:18,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:31:18,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:18,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:18,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:18,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:18,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:18,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:18,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:18,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:18,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:18,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:18,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:31:18,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:18,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:18,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:18,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:18,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:18,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:18,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:18,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:31:18,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:18,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:18,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:18,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:18,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:18,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:18,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:18,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:18,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:18,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:18,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:31:18,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:18,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:18,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:18,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:18,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:18,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:31:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:18,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:18,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:18,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:31:18,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:18,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 23:31:18,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:31:18,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:18,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:31:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:18,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:18,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:18,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:18,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:18,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:31:18,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:18,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:31:18,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 430 proven. 2 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-10-26 23:31:18,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519185172] [2020-10-26 23:31:18,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:18,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:18,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078577629] [2020-10-26 23:31:18,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:18,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:18,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:18,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:18,888 INFO L87 Difference]: Start difference. First operand 6697 states and 7713 transitions. Second operand 7 states. [2020-10-26 23:31:20,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:20,746 INFO L93 Difference]: Finished difference Result 13210 states and 15304 transitions. [2020-10-26 23:31:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:31:20,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 759 [2020-10-26 23:31:20,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:20,772 INFO L225 Difference]: With dead ends: 13210 [2020-10-26 23:31:20,772 INFO L226 Difference]: Without dead ends: 6885 [2020-10-26 23:31:20,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:31:20,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6885 states. [2020-10-26 23:31:20,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6885 to 6881. [2020-10-26 23:31:20,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6881 states. [2020-10-26 23:31:20,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6881 states to 6881 states and 7905 transitions. [2020-10-26 23:31:20,923 INFO L78 Accepts]: Start accepts. Automaton has 6881 states and 7905 transitions. Word has length 759 [2020-10-26 23:31:20,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:20,925 INFO L481 AbstractCegarLoop]: Abstraction has 6881 states and 7905 transitions. [2020-10-26 23:31:20,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:20,925 INFO L276 IsEmpty]: Start isEmpty. Operand 6881 states and 7905 transitions. [2020-10-26 23:31:20,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2020-10-26 23:31:20,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:20,935 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:20,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:31:20,935 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:20,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:20,936 INFO L82 PathProgramCache]: Analyzing trace with hash 2047121016, now seen corresponding path program 1 times [2020-10-26 23:31:20,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:20,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933936874] [2020-10-26 23:31:20,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:21,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:21,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:21,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:21,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:26,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 790 [2020-10-26 23:31:26,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:26,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-26 23:31:26,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:31:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:31:26,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:26,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:26,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:26,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:26,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:26,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:26,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:26,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:26,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:26,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:26,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:26,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:26,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:31:26,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:26,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:26,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:26,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:26,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:26,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:26,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:31:26,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:26,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:26,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:26,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:26,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:26,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:26,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:26,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:26,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:26,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:31:26,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:26,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:26,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:26,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:26,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:26,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:26,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:26,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:26,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:26,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:26,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:26,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:26,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:31:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:26,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:26,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:26,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:26,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 23:31:26,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:31:26,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:26,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:31:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:26,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:26,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:26,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:26,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:31:26,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:26,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:26,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:26,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:31:26,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:26,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-26 23:31:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:26,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:26,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:26,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:26,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:26,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:31:26,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:26,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:26,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:31:26,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:26,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1901 backedges. 500 proven. 72 refuted. 0 times theorem prover too weak. 1329 trivial. 0 not checked. [2020-10-26 23:31:27,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933936874] [2020-10-26 23:31:27,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:27,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:27,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18943404] [2020-10-26 23:31:27,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:27,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:27,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:27,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:27,112 INFO L87 Difference]: Start difference. First operand 6881 states and 7905 transitions. Second operand 7 states. [2020-10-26 23:31:29,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:29,682 INFO L93 Difference]: Finished difference Result 14688 states and 17079 transitions. [2020-10-26 23:31:29,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:31:29,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 766 [2020-10-26 23:31:29,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:29,711 INFO L225 Difference]: With dead ends: 14688 [2020-10-26 23:31:29,711 INFO L226 Difference]: Without dead ends: 8179 [2020-10-26 23:31:29,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:31:29,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8179 states. [2020-10-26 23:31:29,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8179 to 8173. [2020-10-26 23:31:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8173 states. [2020-10-26 23:31:29,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8173 states to 8173 states and 9432 transitions. [2020-10-26 23:31:29,893 INFO L78 Accepts]: Start accepts. Automaton has 8173 states and 9432 transitions. Word has length 766 [2020-10-26 23:31:29,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:29,895 INFO L481 AbstractCegarLoop]: Abstraction has 8173 states and 9432 transitions. [2020-10-26 23:31:29,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:29,895 INFO L276 IsEmpty]: Start isEmpty. Operand 8173 states and 9432 transitions. [2020-10-26 23:31:29,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2020-10-26 23:31:29,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:29,905 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:29,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:31:29,906 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:29,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:29,906 INFO L82 PathProgramCache]: Analyzing trace with hash -444911092, now seen corresponding path program 1 times [2020-10-26 23:31:29,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:29,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557505659] [2020-10-26 23:31:29,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:30,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:30,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:30,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:30,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:33,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:33,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 808 [2020-10-26 23:31:35,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:31:35,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-26 23:31:35,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:31:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-26 23:31:35,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:35,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:35,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:35,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:35,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:35,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:35,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:35,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:35,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:35,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:35,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:35,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:31:35,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:35,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:35,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:35,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:35,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:31:35,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:35,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:35,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:35,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:35,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:35,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:31:35,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:35,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:35,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:35,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:35,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:35,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:31:35,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:35,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:35,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:31:35,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:35,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:31:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:35,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:35,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:35,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:31:35,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:35,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:35,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:31:35,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:35,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-10-26 23:31:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:35,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:35,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:35,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:31:35,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-26 23:31:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:35,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:35,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2020-10-26 23:31:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:35,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:35,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:35,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:31:35,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:35,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:35,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:31:35,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:35,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2030 backedges. 558 proven. 150 refuted. 0 times theorem prover too weak. 1322 trivial. 0 not checked. [2020-10-26 23:31:36,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557505659] [2020-10-26 23:31:36,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:36,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:36,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781125640] [2020-10-26 23:31:36,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:36,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:36,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:36,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:36,310 INFO L87 Difference]: Start difference. First operand 8173 states and 9432 transitions. Second operand 7 states. [2020-10-26 23:31:38,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:38,463 INFO L93 Difference]: Finished difference Result 15992 states and 18514 transitions. [2020-10-26 23:31:38,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:31:38,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 784 [2020-10-26 23:31:38,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:38,487 INFO L225 Difference]: With dead ends: 15992 [2020-10-26 23:31:38,487 INFO L226 Difference]: Without dead ends: 8191 [2020-10-26 23:31:38,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:31:38,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8191 states. [2020-10-26 23:31:38,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8191 to 8173. [2020-10-26 23:31:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8173 states. [2020-10-26 23:31:38,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8173 states to 8173 states and 9430 transitions. [2020-10-26 23:31:38,680 INFO L78 Accepts]: Start accepts. Automaton has 8173 states and 9430 transitions. Word has length 784 [2020-10-26 23:31:38,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:38,681 INFO L481 AbstractCegarLoop]: Abstraction has 8173 states and 9430 transitions. [2020-10-26 23:31:38,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:38,681 INFO L276 IsEmpty]: Start isEmpty. Operand 8173 states and 9430 transitions. [2020-10-26 23:31:38,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2020-10-26 23:31:38,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:38,692 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:38,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:31:38,692 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:38,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:38,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428308, now seen corresponding path program 1 times [2020-10-26 23:31:38,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:38,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485332186] [2020-10-26 23:31:38,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:38,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:39,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:39,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 826 [2020-10-26 23:31:39,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:39,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1139 [2020-10-26 23:31:39,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 806 [2020-10-26 23:31:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 23:31:39,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:40,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:40,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:40,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:40,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:40,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:40,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:40,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:40,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:40,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:40,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:40,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:40,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:40,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:40,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:40,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:40,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:40,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:31:40,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:40,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:40,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:40,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:40,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:40,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:40,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:40,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:31:40,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:40,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:40,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:40,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:40,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:40,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:40,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:40,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:31:40,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:40,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:40,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:40,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:40,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:40,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:40,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:40,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:31:40,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:40,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:40,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:40,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:40,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:40,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:31:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:40,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:40,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:40,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:40,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:31:40,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:40,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:40,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:40,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:40,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:40,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:31:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:40,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:40,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:40,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:31:40,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:40,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:31:40,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:40,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:40,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:31:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:40,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:40,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:40,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:31:40,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:40,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:31:40,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 23:31:40,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2042 backedges. 81 proven. 7 refuted. 0 times theorem prover too weak. 1954 trivial. 0 not checked. [2020-10-26 23:31:40,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485332186] [2020-10-26 23:31:40,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:40,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:31:40,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450720911] [2020-10-26 23:31:40,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:31:40,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:40,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:31:40,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:31:40,863 INFO L87 Difference]: Start difference. First operand 8173 states and 9430 transitions. Second operand 5 states. [2020-10-26 23:31:42,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:42,352 INFO L93 Difference]: Finished difference Result 17260 states and 20136 transitions. [2020-10-26 23:31:42,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:31:42,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 802 [2020-10-26 23:31:42,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:42,387 INFO L225 Difference]: With dead ends: 17260 [2020-10-26 23:31:42,387 INFO L226 Difference]: Without dead ends: 8165 [2020-10-26 23:31:42,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:31:42,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8165 states. [2020-10-26 23:31:42,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8165 to 7251. [2020-10-26 23:31:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7251 states. [2020-10-26 23:31:42,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7251 states to 7251 states and 8208 transitions. [2020-10-26 23:31:42,565 INFO L78 Accepts]: Start accepts. Automaton has 7251 states and 8208 transitions. Word has length 802 [2020-10-26 23:31:42,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:42,565 INFO L481 AbstractCegarLoop]: Abstraction has 7251 states and 8208 transitions. [2020-10-26 23:31:42,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:31:42,566 INFO L276 IsEmpty]: Start isEmpty. Operand 7251 states and 8208 transitions. [2020-10-26 23:31:42,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2020-10-26 23:31:42,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:42,577 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:42,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:31:42,577 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:42,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:42,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1256330652, now seen corresponding path program 1 times [2020-10-26 23:31:42,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:42,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633259007] [2020-10-26 23:31:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:42,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:42,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:47,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:47,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:47,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:47,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 911 [2020-10-26 23:31:47,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:47,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 23:31:47,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:47,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:31:47,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:31:47,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:31:47,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:47,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:47,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:47,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:47,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:47,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:47,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:31:47,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:47,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:47,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:47,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:47,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:47,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:47,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:47,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:47,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:47,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:47,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:47,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:47,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:47,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:47,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:47,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:47,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:47,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:47,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:47,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:31:47,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:47,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:47,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:47,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:47,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:47,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:47,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:47,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:47,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:47,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:47,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:31:47,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:47,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:47,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:47,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:47,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:47,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:48,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:48,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:48,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:48,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:48,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:31:48,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:48,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:48,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:48,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:48,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:48,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:31:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:48,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:48,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:48,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:48,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:48,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:31:48,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:48,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:48,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:48,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:48,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:48,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:31:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:48,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:48,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:48,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:31:48,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:48,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:31:48,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:48,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:48,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:48,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:31:48,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:48,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:31:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:48,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:48,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:48,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:31:48,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:48,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:31:48,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:48,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:31:48,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:48,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:31:48,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:48,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:31:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:48,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:48,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:48,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:48,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:31:48,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:48,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-26 23:31:48,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:48,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:48,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:48,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:31:48,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:49,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2624 backedges. 1176 proven. 82 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:31:49,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633259007] [2020-10-26 23:31:49,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:49,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:31:49,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692462820] [2020-10-26 23:31:49,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:31:49,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:49,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:31:49,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:31:49,314 INFO L87 Difference]: Start difference. First operand 7251 states and 8208 transitions. Second operand 10 states. [2020-10-26 23:31:52,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:52,020 INFO L93 Difference]: Finished difference Result 15655 states and 17942 transitions. [2020-10-26 23:31:52,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:31:52,022 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 885 [2020-10-26 23:31:52,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:52,045 INFO L225 Difference]: With dead ends: 15655 [2020-10-26 23:31:52,045 INFO L226 Difference]: Without dead ends: 8741 [2020-10-26 23:31:52,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:31:52,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8741 states. [2020-10-26 23:31:52,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8741 to 8553. [2020-10-26 23:31:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8553 states. [2020-10-26 23:31:52,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8553 states to 8553 states and 9837 transitions. [2020-10-26 23:31:52,300 INFO L78 Accepts]: Start accepts. Automaton has 8553 states and 9837 transitions. Word has length 885 [2020-10-26 23:31:52,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:52,300 INFO L481 AbstractCegarLoop]: Abstraction has 8553 states and 9837 transitions. [2020-10-26 23:31:52,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:31:52,300 INFO L276 IsEmpty]: Start isEmpty. Operand 8553 states and 9837 transitions. [2020-10-26 23:31:52,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 919 [2020-10-26 23:31:52,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:52,313 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:52,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:31:52,313 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:52,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:52,314 INFO L82 PathProgramCache]: Analyzing trace with hash 737286884, now seen corresponding path program 1 times [2020-10-26 23:31:52,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:52,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835982903] [2020-10-26 23:31:52,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:52,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:53,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:54,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:54,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:54,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:57,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:57,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 944 [2020-10-26 23:31:57,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:31:57,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-26 23:31:57,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:57,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:31:57,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:31:57,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:31:57,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:57,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:57,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:57,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:57,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:57,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:57,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:31:57,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:57,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:57,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:57,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:57,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:57,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:57,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:57,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:31:57,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:57,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:57,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:57,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:57,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:57,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:57,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:57,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:31:57,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:57,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:57,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:57,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:57,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:57,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:57,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:57,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:31:57,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:57,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:57,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:57,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:57,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:57,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:57,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:57,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:57,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:31:57,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:57,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:31:57,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:57,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:57,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:57,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:57,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:57,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:31:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:57,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:57,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:57,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:31:57,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:57,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:31:57,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:57,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:57,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:57,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:58,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:31:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:58,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:58,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:58,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:31:58,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:58,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:31:58,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:58,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:58,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:58,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:31:58,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:58,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:31:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:58,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:58,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:58,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:31:58,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:58,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-26 23:31:58,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:58,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:31:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:31:58,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:58,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:31:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:58,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:58,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:58,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:58,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:31:58,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:58,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:31:58,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:31:58,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2660 backedges. 1238 proven. 56 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:31:59,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835982903] [2020-10-26 23:31:59,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:59,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:31:59,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924654542] [2020-10-26 23:31:59,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:31:59,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:59,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:31:59,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:31:59,261 INFO L87 Difference]: Start difference. First operand 8553 states and 9837 transitions. Second operand 9 states. [2020-10-26 23:32:01,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:01,842 INFO L93 Difference]: Finished difference Result 16983 states and 19576 transitions. [2020-10-26 23:32:01,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:32:01,843 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 918 [2020-10-26 23:32:01,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:01,867 INFO L225 Difference]: With dead ends: 16983 [2020-10-26 23:32:01,867 INFO L226 Difference]: Without dead ends: 8769 [2020-10-26 23:32:01,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-26 23:32:01,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8769 states. [2020-10-26 23:32:02,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8769 to 8553. [2020-10-26 23:32:02,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8553 states. [2020-10-26 23:32:02,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8553 states to 8553 states and 9829 transitions. [2020-10-26 23:32:02,041 INFO L78 Accepts]: Start accepts. Automaton has 8553 states and 9829 transitions. Word has length 918 [2020-10-26 23:32:02,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:02,042 INFO L481 AbstractCegarLoop]: Abstraction has 8553 states and 9829 transitions. [2020-10-26 23:32:02,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:32:02,043 INFO L276 IsEmpty]: Start isEmpty. Operand 8553 states and 9829 transitions. [2020-10-26 23:32:02,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2020-10-26 23:32:02,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:02,057 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:02,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:32:02,058 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:02,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:02,058 INFO L82 PathProgramCache]: Analyzing trace with hash -2134043168, now seen corresponding path program 1 times [2020-10-26 23:32:02,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:02,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687159077] [2020-10-26 23:32:02,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:02,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:02,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:04,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:04,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:07,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:07,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 945 [2020-10-26 23:32:07,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:32:07,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-26 23:32:07,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:07,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:32:07,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:32:07,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:32:07,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:07,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:07,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:07,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:07,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:07,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:07,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:07,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:07,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:07,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:07,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:07,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:07,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:07,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:32:07,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:07,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:07,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:07,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:07,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:07,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:07,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:07,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:07,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:07,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:07,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:32:07,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:07,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:07,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:07,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:07,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:07,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:07,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:07,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:32:07,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:07,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:07,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:07,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:07,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:07,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:07,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:07,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:07,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:07,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:07,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:32:07,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:07,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:07,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:07,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:07,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:07,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:07,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:07,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:07,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:07,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:32:07,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:07,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:07,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:07,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:07,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:07,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:07,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:07,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:07,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:07,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:07,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:32:07,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:07,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:07,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:07,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:32:07,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:07,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:32:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:07,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:08,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:08,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:32:08,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:08,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-26 23:32:08,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:32:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:32:08,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:08,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:32:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:08,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:08,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:08,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:08,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:32:08,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:08,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:32:08,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:32:08,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:09,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2661 backedges. 1239 proven. 56 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:32:09,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687159077] [2020-10-26 23:32:09,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:09,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:32:09,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160618069] [2020-10-26 23:32:09,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:32:09,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:09,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:32:09,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:32:09,236 INFO L87 Difference]: Start difference. First operand 8553 states and 9829 transitions. Second operand 9 states. [2020-10-26 23:32:11,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:11,939 INFO L93 Difference]: Finished difference Result 16989 states and 19564 transitions. [2020-10-26 23:32:11,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:32:11,940 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 919 [2020-10-26 23:32:11,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:11,964 INFO L225 Difference]: With dead ends: 16989 [2020-10-26 23:32:11,964 INFO L226 Difference]: Without dead ends: 8767 [2020-10-26 23:32:11,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-26 23:32:11,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8767 states. [2020-10-26 23:32:12,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8767 to 8551. [2020-10-26 23:32:12,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8551 states. [2020-10-26 23:32:12,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8551 states to 8551 states and 9794 transitions. [2020-10-26 23:32:12,141 INFO L78 Accepts]: Start accepts. Automaton has 8551 states and 9794 transitions. Word has length 919 [2020-10-26 23:32:12,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:12,141 INFO L481 AbstractCegarLoop]: Abstraction has 8551 states and 9794 transitions. [2020-10-26 23:32:12,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:32:12,142 INFO L276 IsEmpty]: Start isEmpty. Operand 8551 states and 9794 transitions. [2020-10-26 23:32:12,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 931 [2020-10-26 23:32:12,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:12,157 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:12,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:32:12,158 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:12,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:12,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1201387612, now seen corresponding path program 1 times [2020-10-26 23:32:12,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:12,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473346799] [2020-10-26 23:32:12,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:12,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:12,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:17,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:17,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 956 [2020-10-26 23:32:17,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:32:17,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 23:32:17,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:17,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:17,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:32:17,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:32:17,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:17,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:17,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:17,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:17,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:17,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:17,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:17,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:17,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:17,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:17,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:17,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:17,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:17,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:17,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:17,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:17,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:17,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:17,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:17,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:17,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:17,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:17,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:17,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:17,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:17,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:17,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:17,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:17,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:32:17,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:17,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:17,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:17,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:17,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:17,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:17,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:17,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:32:17,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:17,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:17,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:17,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:17,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:17,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:17,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:17,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:17,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:17,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:17,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:17,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:17,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:17,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:17,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:17,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:17,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:17,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:17,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:17,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 23:32:17,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:17,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:17,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:17,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:32:17,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:17,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:17,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:17,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:17,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:32:17,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:17,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 23:32:17,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:32:17,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:18,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-26 23:32:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:18,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:18,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:18,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:32:18,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:18,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:32:18,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:32:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:18,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:18,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 837 [2020-10-26 23:32:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:18,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:18,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:18,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:32:18,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:18,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:32:18,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:32:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:18,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:18,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2654 backedges. 704 proven. 152 refuted. 0 times theorem prover too weak. 1798 trivial. 0 not checked. [2020-10-26 23:32:18,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473346799] [2020-10-26 23:32:18,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:18,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:32:18,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183968865] [2020-10-26 23:32:18,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:32:18,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:18,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:32:18,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:32:18,851 INFO L87 Difference]: Start difference. First operand 8551 states and 9794 transitions. Second operand 7 states. [2020-10-26 23:32:20,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:20,763 INFO L93 Difference]: Finished difference Result 17474 states and 20047 transitions. [2020-10-26 23:32:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:32:20,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 930 [2020-10-26 23:32:20,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:20,785 INFO L225 Difference]: With dead ends: 17474 [2020-10-26 23:32:20,785 INFO L226 Difference]: Without dead ends: 9295 [2020-10-26 23:32:20,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:32:20,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9295 states. [2020-10-26 23:32:20,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9295 to 9105. [2020-10-26 23:32:20,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9105 states. [2020-10-26 23:32:20,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9105 states to 9105 states and 10414 transitions. [2020-10-26 23:32:20,983 INFO L78 Accepts]: Start accepts. Automaton has 9105 states and 10414 transitions. Word has length 930 [2020-10-26 23:32:20,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:20,984 INFO L481 AbstractCegarLoop]: Abstraction has 9105 states and 10414 transitions. [2020-10-26 23:32:20,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:32:20,984 INFO L276 IsEmpty]: Start isEmpty. Operand 9105 states and 10414 transitions. [2020-10-26 23:32:20,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2020-10-26 23:32:20,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:20,997 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:20,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:32:20,998 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:20,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:20,999 INFO L82 PathProgramCache]: Analyzing trace with hash -881807500, now seen corresponding path program 1 times [2020-10-26 23:32:21,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:21,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29998356] [2020-10-26 23:32:21,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:21,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:21,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:24,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:24,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 979 [2020-10-26 23:32:24,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3261 [2020-10-26 23:32:24,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:32:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:32:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-26 23:32:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:24,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:24,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:24,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:24,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:24,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:24,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:24,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:24,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:24,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:24,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:24,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:24,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:24,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:24,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:32:24,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:24,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:24,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:24,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:24,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:24,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:24,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:24,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:32:24,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:24,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:24,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:24,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:24,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:24,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:24,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:24,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:24,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:24,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:24,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:32:24,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:24,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:24,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:24,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:24,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:24,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:24,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:24,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:24,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:24,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:24,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:32:24,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:24,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:24,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:24,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:24,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:24,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:24,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:24,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:32:24,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:24,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:24,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:25,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:25,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:25,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:25,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:25,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:32:25,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:25,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:25,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:25,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:32:25,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:25,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:32:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:25,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:25,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:25,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:25,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:25,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-26 23:32:25,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:32:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:32:25,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:25,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:32:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:25,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:25,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:25,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:32:25,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:25,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:32:25,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:25,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:25,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:25,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:32:25,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2705 backedges. 1254 proven. 6 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2020-10-26 23:32:25,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29998356] [2020-10-26 23:32:25,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:25,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:32:25,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186710679] [2020-10-26 23:32:25,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:32:25,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:25,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:32:25,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:32:25,952 INFO L87 Difference]: Start difference. First operand 9105 states and 10414 transitions. Second operand 9 states. [2020-10-26 23:32:29,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:29,151 INFO L93 Difference]: Finished difference Result 18582 states and 21308 transitions. [2020-10-26 23:32:29,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 23:32:29,151 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 953 [2020-10-26 23:32:29,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:29,172 INFO L225 Difference]: With dead ends: 18582 [2020-10-26 23:32:29,172 INFO L226 Difference]: Without dead ends: 9849 [2020-10-26 23:32:29,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-26 23:32:29,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9849 states. [2020-10-26 23:32:29,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9849 to 9657. [2020-10-26 23:32:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9657 states. [2020-10-26 23:32:29,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9657 states to 9657 states and 10995 transitions. [2020-10-26 23:32:29,364 INFO L78 Accepts]: Start accepts. Automaton has 9657 states and 10995 transitions. Word has length 953 [2020-10-26 23:32:29,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:29,365 INFO L481 AbstractCegarLoop]: Abstraction has 9657 states and 10995 transitions. [2020-10-26 23:32:29,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:32:29,365 INFO L276 IsEmpty]: Start isEmpty. Operand 9657 states and 10995 transitions. [2020-10-26 23:32:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2020-10-26 23:32:29,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:29,379 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:29,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:32:29,380 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:29,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:29,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1401200440, now seen corresponding path program 1 times [2020-10-26 23:32:29,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:29,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245202147] [2020-10-26 23:32:29,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:29,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:29,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1030 [2020-10-26 23:32:34,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:34,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-26 23:32:34,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:32:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:32:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:32:34,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:34,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:34,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:34,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:34,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:34,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:32:34,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:34,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:34,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:32:34,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:34,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:34,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:34,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:32:34,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:34,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:34,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:34,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:34,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:32:34,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:34,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:32:34,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:34,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:35,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:32:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:35,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:35,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:35,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:32:35,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:35,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:32:35,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:35,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:35,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:32:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:35,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:35,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:35,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:32:35,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:35,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-26 23:32:35,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:32:35,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:35,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:32:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:35,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:35,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:35,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:32:35,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:35,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:32:35,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:32:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:32:35,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:35,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-26 23:32:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:35,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:35,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:35,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:35,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:32:35,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:35,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:32:35,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:35,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:35,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:35,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:32:35,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 1019 proven. 72 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2020-10-26 23:32:36,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245202147] [2020-10-26 23:32:36,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:36,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:32:36,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390390676] [2020-10-26 23:32:36,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:32:36,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:36,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:32:36,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:32:36,991 INFO L87 Difference]: Start difference. First operand 9657 states and 10995 transitions. Second operand 10 states. [2020-10-26 23:32:39,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:39,719 INFO L93 Difference]: Finished difference Result 20655 states and 23708 transitions. [2020-10-26 23:32:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:32:39,720 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1004 [2020-10-26 23:32:39,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:39,740 INFO L225 Difference]: With dead ends: 20655 [2020-10-26 23:32:39,740 INFO L226 Difference]: Without dead ends: 11325 [2020-10-26 23:32:39,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:32:39,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11325 states. [2020-10-26 23:32:39,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11325 to 11309. [2020-10-26 23:32:39,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11309 states. [2020-10-26 23:32:39,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11309 states to 11309 states and 12957 transitions. [2020-10-26 23:32:39,952 INFO L78 Accepts]: Start accepts. Automaton has 11309 states and 12957 transitions. Word has length 1004 [2020-10-26 23:32:39,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:39,953 INFO L481 AbstractCegarLoop]: Abstraction has 11309 states and 12957 transitions. [2020-10-26 23:32:39,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:32:39,953 INFO L276 IsEmpty]: Start isEmpty. Operand 11309 states and 12957 transitions. [2020-10-26 23:32:39,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1069 [2020-10-26 23:32:39,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:39,968 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:39,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:32:39,968 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:39,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:39,970 INFO L82 PathProgramCache]: Analyzing trace with hash -291653508, now seen corresponding path program 1 times [2020-10-26 23:32:39,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:39,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452208364] [2020-10-26 23:32:39,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:40,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:40,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:40,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:44,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:45,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1096 [2020-10-26 23:32:45,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:32:45,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 23:32:45,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:45,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:32:45,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:32:45,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 387 [2020-10-26 23:32:45,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:45,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:45,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:45,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:45,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:45,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:45,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:45,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:45,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:45,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:45,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:45,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:45,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:45,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:45,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:45,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:32:45,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:45,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:45,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:45,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:45,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:45,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:45,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:45,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:45,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:45,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:32:45,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:45,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:45,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:45,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:45,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:45,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:45,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:45,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:45,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:32:45,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:45,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:45,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:45,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:45,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:32:45,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:45,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:32:45,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:45,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:45,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:45,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:45,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:45,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:32:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:45,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:45,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:32:45,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:45,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:32:45,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:45,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:45,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:45,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:45,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:45,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:32:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:45,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:45,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:32:45,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:45,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:32:45,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:32:45,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:45,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:32:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:45,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:45,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:45,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:45,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:45,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-26 23:32:45,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:32:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:32:45,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:45,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:32:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:46,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:46,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:32:46,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:46,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:32:46,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:46,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:46,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:46,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:32:46,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:46,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:32:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:46,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:46,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:46,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:32:46,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:46,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:32:46,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:32:46,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3512 backedges. 1970 proven. 164 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2020-10-26 23:32:47,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452208364] [2020-10-26 23:32:47,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:47,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:32:47,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152358144] [2020-10-26 23:32:47,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:32:47,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:47,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:32:47,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:32:47,252 INFO L87 Difference]: Start difference. First operand 11309 states and 12957 transitions. Second operand 11 states. [2020-10-26 23:32:50,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:50,674 INFO L93 Difference]: Finished difference Result 22260 states and 25551 transitions. [2020-10-26 23:32:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 23:32:50,675 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1068 [2020-10-26 23:32:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:50,694 INFO L225 Difference]: With dead ends: 22260 [2020-10-26 23:32:50,694 INFO L226 Difference]: Without dead ends: 11323 [2020-10-26 23:32:50,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:32:50,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11323 states. [2020-10-26 23:32:50,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11323 to 11309. [2020-10-26 23:32:50,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11309 states. [2020-10-26 23:32:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11309 states to 11309 states and 12947 transitions. [2020-10-26 23:32:50,902 INFO L78 Accepts]: Start accepts. Automaton has 11309 states and 12947 transitions. Word has length 1068 [2020-10-26 23:32:50,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:50,903 INFO L481 AbstractCegarLoop]: Abstraction has 11309 states and 12947 transitions. [2020-10-26 23:32:50,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:32:50,904 INFO L276 IsEmpty]: Start isEmpty. Operand 11309 states and 12947 transitions. [2020-10-26 23:32:50,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1114 [2020-10-26 23:32:50,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:50,920 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:50,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:32:50,921 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:50,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:50,921 INFO L82 PathProgramCache]: Analyzing trace with hash -111287428, now seen corresponding path program 1 times [2020-10-26 23:32:50,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:50,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574634213] [2020-10-26 23:32:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:51,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:51,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:53,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:56,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:56,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1139 [2020-10-26 23:32:56,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:32:56,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-26 23:32:56,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:32:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:32:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 23:32:56,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:56,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:56,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:56,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:56,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:56,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:56,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:56,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:56,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:56,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:56,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:56,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:56,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:56,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:32:56,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:56,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:56,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:56,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:56,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:56,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:56,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:56,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:32:56,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:56,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:56,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:56,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:56,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:56,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:56,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:56,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:56,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:56,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:56,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:32:56,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:56,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:56,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:56,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:56,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:56,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:56,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:56,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:56,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:32:56,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:56,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:32:56,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:56,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:56,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:32:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:56,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:56,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:56,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:32:56,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:56,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:32:56,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:56,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:56,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:32:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:56,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:56,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:56,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:32:56,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:56,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 23:32:56,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:32:56,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:56,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:32:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:56,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:57,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:57,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:32:57,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:57,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-26 23:32:57,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:57,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:32:57,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:57,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:32:57,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:58,140 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-10-26 23:32:58,412 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 67 [2020-10-26 23:32:58,683 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2020-10-26 23:32:58,977 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 74 [2020-10-26 23:32:59,293 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2020-10-26 23:32:59,618 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2020-10-26 23:33:00,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1017 [2020-10-26 23:33:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:00,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:00,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:00,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:33:00,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:00,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:33:00,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:33:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:00,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3328 backedges. 941 proven. 85 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2020-10-26 23:33:04,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574634213] [2020-10-26 23:33:04,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:04,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:33:04,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077787446] [2020-10-26 23:33:04,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:33:04,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:04,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:33:04,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:33:04,650 INFO L87 Difference]: Start difference. First operand 11309 states and 12947 transitions. Second operand 13 states. [2020-10-26 23:33:04,884 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 71 [2020-10-26 23:33:05,699 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 88 [2020-10-26 23:33:06,056 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 93 [2020-10-26 23:33:06,547 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 85 [2020-10-26 23:33:06,910 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 97 [2020-10-26 23:33:07,322 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 100 [2020-10-26 23:33:07,834 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 104 [2020-10-26 23:33:08,262 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 118 [2020-10-26 23:33:08,699 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 91 [2020-10-26 23:33:09,025 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 61 [2020-10-26 23:33:09,324 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2020-10-26 23:33:10,115 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 82 [2020-10-26 23:33:10,475 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 86 [2020-10-26 23:33:10,989 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 90 [2020-10-26 23:33:11,567 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 94 [2020-10-26 23:33:12,056 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2020-10-26 23:33:12,484 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 101 [2020-10-26 23:33:13,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:13,245 INFO L93 Difference]: Finished difference Result 22442 states and 25752 transitions. [2020-10-26 23:33:13,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-26 23:33:13,248 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1113 [2020-10-26 23:33:13,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:13,266 INFO L225 Difference]: With dead ends: 22442 [2020-10-26 23:33:13,267 INFO L226 Difference]: Without dead ends: 11434 [2020-10-26 23:33:13,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=280, Invalid=712, Unknown=0, NotChecked=0, Total=992 [2020-10-26 23:33:13,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11434 states. [2020-10-26 23:33:13,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11434 to 11422. [2020-10-26 23:33:13,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11422 states. [2020-10-26 23:33:13,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11422 states to 11422 states and 13055 transitions. [2020-10-26 23:33:13,471 INFO L78 Accepts]: Start accepts. Automaton has 11422 states and 13055 transitions. Word has length 1113 [2020-10-26 23:33:13,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:13,472 INFO L481 AbstractCegarLoop]: Abstraction has 11422 states and 13055 transitions. [2020-10-26 23:33:13,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:33:13,473 INFO L276 IsEmpty]: Start isEmpty. Operand 11422 states and 13055 transitions. [2020-10-26 23:33:13,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1138 [2020-10-26 23:33:13,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:13,490 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:13,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 23:33:13,490 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:13,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:13,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1460449884, now seen corresponding path program 1 times [2020-10-26 23:33:13,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:13,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069338860] [2020-10-26 23:33:13,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:13,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:14,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:18,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:18,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1165 [2020-10-26 23:33:18,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:18,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-26 23:33:18,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:33:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 985 [2020-10-26 23:33:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:33:18,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:19,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:19,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:19,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:19,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:19,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:19,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:33:19,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:19,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:19,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:19,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:19,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:19,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:19,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:19,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:19,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:19,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:19,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:33:19,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:19,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:19,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:19,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:19,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:19,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:19,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:19,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:19,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:19,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:19,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:33:19,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:19,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:19,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:19,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:19,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:19,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:19,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:19,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:33:19,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:19,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:19,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:19,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:19,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:19,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:19,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:19,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:19,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:33:19,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:19,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:33:19,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:19,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:19,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:19,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:19,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:19,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:33:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:19,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:19,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:19,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:33:19,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:19,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:33:19,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:19,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:19,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:33:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:19,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:19,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:19,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:33:19,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:19,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:33:19,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:19,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:19,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:33:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:19,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:19,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:19,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:33:19,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:19,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:33:19,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:19,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:19,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:19,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-26 23:33:19,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:19,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-26 23:33:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:19,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:19,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:19,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:19,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:19,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:33:19,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:19,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:33:19,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:19,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:33:19,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:19,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1044 [2020-10-26 23:33:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:19,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:19,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:19,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:19,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:33:19,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:19,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:33:19,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:33:19,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3806 backedges. 1186 proven. 72 refuted. 0 times theorem prover too weak. 2548 trivial. 0 not checked. [2020-10-26 23:33:20,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069338860] [2020-10-26 23:33:20,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:20,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:33:20,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395987573] [2020-10-26 23:33:20,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:33:20,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:20,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:33:20,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:33:20,589 INFO L87 Difference]: Start difference. First operand 11422 states and 13055 transitions. Second operand 10 states. [2020-10-26 23:33:22,224 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-26 23:33:23,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:23,547 INFO L93 Difference]: Finished difference Result 24187 states and 27840 transitions. [2020-10-26 23:33:23,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:33:23,548 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1137 [2020-10-26 23:33:23,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:23,567 INFO L225 Difference]: With dead ends: 24187 [2020-10-26 23:33:23,567 INFO L226 Difference]: Without dead ends: 12435 [2020-10-26 23:33:23,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:33:23,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12435 states. [2020-10-26 23:33:23,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12435 to 12235. [2020-10-26 23:33:23,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12235 states. [2020-10-26 23:33:23,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12235 states to 12235 states and 14030 transitions. [2020-10-26 23:33:23,746 INFO L78 Accepts]: Start accepts. Automaton has 12235 states and 14030 transitions. Word has length 1137 [2020-10-26 23:33:23,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:23,747 INFO L481 AbstractCegarLoop]: Abstraction has 12235 states and 14030 transitions. [2020-10-26 23:33:23,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:33:23,747 INFO L276 IsEmpty]: Start isEmpty. Operand 12235 states and 14030 transitions. [2020-10-26 23:33:23,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1244 [2020-10-26 23:33:23,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:23,763 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:23,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 23:33:23,764 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:23,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:23,764 INFO L82 PathProgramCache]: Analyzing trace with hash 209544408, now seen corresponding path program 1 times [2020-10-26 23:33:23,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:23,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024148717] [2020-10-26 23:33:23,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:24,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:24,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:25,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:28,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:29,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:29,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1273 [2020-10-26 23:33:29,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:33:29,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-26 23:33:29,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:29,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:33:29,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-26 23:33:29,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 398 [2020-10-26 23:33:29,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:29,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:29,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:29,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:29,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:29,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:29,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:33:29,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:29,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:29,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:29,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:29,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:29,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:29,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:29,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:29,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:29,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:29,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:33:29,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:29,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:29,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:29,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:29,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:29,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:29,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:29,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:33:29,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:29,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:29,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:29,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:29,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:29,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:29,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:29,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:29,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:29,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:29,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:33:29,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:29,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:29,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:29,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:29,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:29,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:29,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:29,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:29,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:33:29,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:29,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:33:29,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:29,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:29,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:29,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:29,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:33:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:29,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:29,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:29,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:33:29,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:29,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-26 23:33:29,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:29,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:29,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:29,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:29,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:29,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:33:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:29,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:29,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:29,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:33:29,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:29,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:33:29,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:29,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:29,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:29,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:29,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:29,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:33:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:29,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:29,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:29,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:33:29,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:29,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 23:33:29,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:29,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:29,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:29,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 23:33:29,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:29,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:33:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:29,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:30,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:30,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:30,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:33:30,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:30,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-26 23:33:30,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:30,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:30,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:30,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:33:30,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:30,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:33:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:30,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:30,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:30,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:30,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:33:30,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:30,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 23:33:30,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-26 23:33:30,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:30,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-26 23:33:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:30,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:30,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:30,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:30,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:33:30,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:30,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-26 23:33:30,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:30,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:30,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:30,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:33:30,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4723 backedges. 2413 proven. 129 refuted. 0 times theorem prover too weak. 2181 trivial. 0 not checked. [2020-10-26 23:33:32,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024148717] [2020-10-26 23:33:32,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:32,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:33:32,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956046901] [2020-10-26 23:33:32,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:32,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:32,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:32,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:32,301 INFO L87 Difference]: Start difference. First operand 12235 states and 14030 transitions. Second operand 7 states. [2020-10-26 23:33:33,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:33,851 INFO L93 Difference]: Finished difference Result 26862 states and 31126 transitions. [2020-10-26 23:33:33,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 23:33:33,852 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1243 [2020-10-26 23:33:33,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:33,889 INFO L225 Difference]: With dead ends: 26862 [2020-10-26 23:33:33,889 INFO L226 Difference]: Without dead ends: 14999 [2020-10-26 23:33:33,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:33:33,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14999 states. [2020-10-26 23:33:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14999 to 14973. [2020-10-26 23:33:34,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14973 states. [2020-10-26 23:33:34,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14973 states to 14973 states and 17313 transitions. [2020-10-26 23:33:34,203 INFO L78 Accepts]: Start accepts. Automaton has 14973 states and 17313 transitions. Word has length 1243 [2020-10-26 23:33:34,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:34,204 INFO L481 AbstractCegarLoop]: Abstraction has 14973 states and 17313 transitions. [2020-10-26 23:33:34,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:34,204 INFO L276 IsEmpty]: Start isEmpty. Operand 14973 states and 17313 transitions. [2020-10-26 23:33:34,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1310 [2020-10-26 23:33:34,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:34,225 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:34,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 23:33:34,225 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:34,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:34,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1705741356, now seen corresponding path program 1 times [2020-10-26 23:33:34,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:34,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32269563] [2020-10-26 23:33:34,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:34,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:34,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:36,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking...