/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:03:31,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:03:31,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:03:31,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:03:31,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:03:31,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:03:31,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:03:31,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:03:31,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:03:31,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:03:31,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:03:31,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:03:31,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:03:31,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:03:31,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:03:31,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:03:31,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:03:31,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:03:31,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:03:31,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:03:31,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:03:31,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:03:31,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:03:31,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:03:31,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:03:31,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:03:31,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:03:31,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:03:31,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:03:31,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:03:31,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:03:31,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:03:31,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:03:31,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:03:31,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:03:31,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:03:31,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:03:31,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:03:31,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:03:31,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:03:31,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:03:31,223 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 [2020-10-28 13:03:31,251 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:03:31,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:03:31,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:03:31,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:03:31,255 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:03:31,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:03:31,255 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:03:31,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:03:31,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:03:31,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:03:31,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:03:31,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:03:31,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:03:31,257 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:03:31,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:03:31,257 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:03:31,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:03:31,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:03:31,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:03:31,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:03:31,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:03:31,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:03:31,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:03:31,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:03:31,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:03:31,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:03:31,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:03:31,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:03:31,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:03:31,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:03:31,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:03:31,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:03:31,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:03:31,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:03:31,887 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:03:31,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label20.c [2020-10-28 13:03:32,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7dffe0542/87cc4a6a376b46c7b4c5d0fa110be11e/FLAG4bc690d06 [2020-10-28 13:03:33,142 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:03:33,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label20.c [2020-10-28 13:03:33,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7dffe0542/87cc4a6a376b46c7b4c5d0fa110be11e/FLAG4bc690d06 [2020-10-28 13:03:33,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7dffe0542/87cc4a6a376b46c7b4c5d0fa110be11e [2020-10-28 13:03:33,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:03:33,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:03:33,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:03:33,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:03:33,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:03:33,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:03:33" (1/1) ... [2020-10-28 13:03:33,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ec727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:33, skipping insertion in model container [2020-10-28 13:03:33,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:03:33" (1/1) ... [2020-10-28 13:03:33,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:03:33,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:03:34,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:03:34,675 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:03:34,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:03:35,018 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:03:35,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:35 WrapperNode [2020-10-28 13:03:35,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:03:35,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:03:35,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:03:35,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:03:35,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:35" (1/1) ... [2020-10-28 13:03:35,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:35" (1/1) ... [2020-10-28 13:03:35,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:35" (1/1) ... [2020-10-28 13:03:35,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:35" (1/1) ... [2020-10-28 13:03:35,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:35" (1/1) ... [2020-10-28 13:03:35,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:35" (1/1) ... [2020-10-28 13:03:35,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:35" (1/1) ... [2020-10-28 13:03:35,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:03:35,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:03:35,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:03:35,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:03:35,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:35" (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 [2020-10-28 13:03:35,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:03:35,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:03:35,350 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:03:35,350 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:03:35,351 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:03:35,352 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:03:35,352 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:03:35,352 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:03:35,352 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:03:35,353 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:03:35,354 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:03:35,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:03:35,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:03:35,355 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:03:35,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:03:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:03:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:03:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:03:35,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:03:35,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:03:35,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:03:39,231 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:03:39,232 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:03:39,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:03:39 BoogieIcfgContainer [2020-10-28 13:03:39,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:03:39,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:03:39,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:03:39,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:03:39,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:03:33" (1/3) ... [2020-10-28 13:03:39,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7228c045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:03:39, skipping insertion in model container [2020-10-28 13:03:39,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:03:35" (2/3) ... [2020-10-28 13:03:39,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7228c045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:03:39, skipping insertion in model container [2020-10-28 13:03:39,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:03:39" (3/3) ... [2020-10-28 13:03:39,247 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label20.c [2020-10-28 13:03:39,262 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:03:39,268 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:03:39,285 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:03:39,320 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:03:39,321 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:03:39,321 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:03:39,321 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:03:39,321 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:03:39,322 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:03:39,322 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:03:39,322 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:03:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:03:39,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 13:03:39,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:39,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:39,366 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:39,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:39,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1509789073, now seen corresponding path program 1 times [2020-10-28 13:03:39,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:39,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824207597] [2020-10-28 13:03:39,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:39,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:40,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:40,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 13:03:40,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:40,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-28 13:03:40,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:40,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:40,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:03:40,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:03:40,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 13:03:40,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:03:40,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:40,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:40,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:40,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:40,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:40,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:03:40,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:40,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:40,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:40,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:40,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:03:40,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:03:40,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824207597] [2020-10-28 13:03:40,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:03:40,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:03:40,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119589082] [2020-10-28 13:03:40,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:03:40,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:40,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:03:40,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:03:40,601 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 13:03:40,771 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:03:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:47,686 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-28 13:03:47,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:03:47,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-28 13:03:47,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:47,710 INFO L225 Difference]: With dead ends: 1204 [2020-10-28 13:03:47,711 INFO L226 Difference]: Without dead ends: 698 [2020-10-28 13:03:47,722 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 [2020-10-28 13:03:47,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-28 13:03:47,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-28 13:03:47,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-28 13:03:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-28 13:03:47,896 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 49 [2020-10-28 13:03:47,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:47,897 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-28 13:03:47,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:03:47,897 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-28 13:03:47,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 13:03:47,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:47,904 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:47,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:03:47,904 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:47,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:47,905 INFO L82 PathProgramCache]: Analyzing trace with hash -603319207, now seen corresponding path program 1 times [2020-10-28 13:03:47,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:47,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036523234] [2020-10-28 13:03:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:48,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:48,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:50,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:50,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:03:50,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:50,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2092 [2020-10-28 13:03:50,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:50,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:03:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:03:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:03:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:03:50,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:50,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:50,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:50,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:50,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:50,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:03:50,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:50,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:03:50,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-28 13:03:50,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:50,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:50,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:50,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:03:50,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:50,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-28 13:03:50,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:50,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:03:50,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:03:50,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036523234] [2020-10-28 13:03:50,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:03:50,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:03:50,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467663170] [2020-10-28 13:03:50,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:03:50,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:50,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:03:50,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:03:50,633 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-28 13:03:59,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:59,224 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-28 13:03:59,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:03:59,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-28 13:03:59,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:59,241 INFO L225 Difference]: With dead ends: 1712 [2020-10-28 13:03:59,241 INFO L226 Difference]: Without dead ends: 1026 [2020-10-28 13:03:59,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:03:59,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-28 13:03:59,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-28 13:03:59,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-28 13:03:59,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-28 13:03:59,290 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 118 [2020-10-28 13:03:59,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:59,291 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-28 13:03:59,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:03:59,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-28 13:03:59,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 13:03:59,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:59,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:59,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:03:59,294 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:59,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:59,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1140576831, now seen corresponding path program 1 times [2020-10-28 13:03:59,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:59,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720593387] [2020-10-28 13:03:59,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:59,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:59,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:59,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:00,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:00,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 13:04:00,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:04:00,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-10-28 13:04:00,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:00,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:04:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:04:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:04:00,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:00,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:00,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:00,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:00,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:00,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:00,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:04:00,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:00,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:00,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:00,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:00,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:04:00,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:00,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:00,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:00,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:00,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:04:00,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:00,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 13:04:00,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:00,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:04:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:04:00,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:00,614 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:04:00,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720593387] [2020-10-28 13:04:00,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:04:00,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:04:00,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83505596] [2020-10-28 13:04:00,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:04:00,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:00,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:04:00,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:04:00,619 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 7 states. [2020-10-28 13:04:09,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:09,331 INFO L93 Difference]: Finished difference Result 2388 states and 3398 transitions. [2020-10-28 13:04:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:04:09,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-28 13:04:09,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:09,343 INFO L225 Difference]: With dead ends: 2388 [2020-10-28 13:04:09,344 INFO L226 Difference]: Without dead ends: 1686 [2020-10-28 13:04:09,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:04:09,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2020-10-28 13:04:09,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1336. [2020-10-28 13:04:09,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-10-28 13:04:09,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1731 transitions. [2020-10-28 13:04:09,404 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1731 transitions. Word has length 123 [2020-10-28 13:04:09,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:09,405 INFO L481 AbstractCegarLoop]: Abstraction has 1336 states and 1731 transitions. [2020-10-28 13:04:09,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:04:09,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1731 transitions. [2020-10-28 13:04:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-28 13:04:09,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:09,409 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:04:09,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:04:09,409 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:09,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:09,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2101942789, now seen corresponding path program 1 times [2020-10-28 13:04:09,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:09,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605796720] [2020-10-28 13:04:09,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:09,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:09,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:10,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:10,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 13:04:10,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:04:10,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 742 [2020-10-28 13:04:10,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:10,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:04:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 13:04:10,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:10,408 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:04:10,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:10,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:10,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:10,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:10,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:10,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:04:10,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:10,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:10,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:10,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:10,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:10,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:10,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:10,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:10,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:10,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:04:10,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:10,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 13:04:10,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:10,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:10,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:10,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:04:10,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:04:10,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605796720] [2020-10-28 13:04:10,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:04:10,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:04:10,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198487494] [2020-10-28 13:04:10,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:04:10,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:10,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:04:10,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:04:10,658 INFO L87 Difference]: Start difference. First operand 1336 states and 1731 transitions. Second operand 5 states. [2020-10-28 13:04:21,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:21,491 INFO L93 Difference]: Finished difference Result 3311 states and 4439 transitions. [2020-10-28 13:04:21,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:04:21,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-28 13:04:21,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:21,506 INFO L225 Difference]: With dead ends: 3311 [2020-10-28 13:04:21,506 INFO L226 Difference]: Without dead ends: 1981 [2020-10-28 13:04:21,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:04:21,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2020-10-28 13:04:21,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1973. [2020-10-28 13:04:21,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1973 states. [2020-10-28 13:04:21,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 2461 transitions. [2020-10-28 13:04:21,571 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 2461 transitions. Word has length 144 [2020-10-28 13:04:21,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:21,572 INFO L481 AbstractCegarLoop]: Abstraction has 1973 states and 2461 transitions. [2020-10-28 13:04:21,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:04:21,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 2461 transitions. [2020-10-28 13:04:21,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-28 13:04:21,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:21,577 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:04:21,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:04:21,577 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:21,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:21,578 INFO L82 PathProgramCache]: Analyzing trace with hash -624305369, now seen corresponding path program 1 times [2020-10-28 13:04:21,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:21,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913480708] [2020-10-28 13:04:21,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:21,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:21,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:22,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:22,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:24,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:26,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:26,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-28 13:04:26,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:04:26,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 13:04:26,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:26,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:26,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:26,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:04:26,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:04:26,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:04:26,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:26,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:26,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:26,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:26,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:26,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:04:26,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:26,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:26,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:26,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:26,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:26,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:26,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:04:26,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:26,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:04:26,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:26,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:26,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:26,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:26,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:04:26,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:26,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:04:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:27,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:27,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:27,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:04:27,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:27,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 13:04:27,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:27,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:04:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:04:27,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:27,307 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:04:27,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913480708] [2020-10-28 13:04:27,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:04:27,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:04:27,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326059897] [2020-10-28 13:04:27,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:04:27,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:27,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:04:27,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:04:27,309 INFO L87 Difference]: Start difference. First operand 1973 states and 2461 transitions. Second operand 7 states. [2020-10-28 13:04:39,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:39,491 INFO L93 Difference]: Finished difference Result 5558 states and 7109 transitions. [2020-10-28 13:04:39,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:04:39,493 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-10-28 13:04:39,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:39,516 INFO L225 Difference]: With dead ends: 5558 [2020-10-28 13:04:39,516 INFO L226 Difference]: Without dead ends: 2943 [2020-10-28 13:04:39,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:04:39,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-10-28 13:04:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 2599. [2020-10-28 13:04:39,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2599 states. [2020-10-28 13:04:39,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 2970 transitions. [2020-10-28 13:04:39,606 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 2970 transitions. Word has length 216 [2020-10-28 13:04:39,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:39,606 INFO L481 AbstractCegarLoop]: Abstraction has 2599 states and 2970 transitions. [2020-10-28 13:04:39,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:04:39,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 2970 transitions. [2020-10-28 13:04:39,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-28 13:04:39,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:39,611 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:04:39,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:04:39,612 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:39,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:39,613 INFO L82 PathProgramCache]: Analyzing trace with hash 814180584, now seen corresponding path program 1 times [2020-10-28 13:04:39,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:39,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589501078] [2020-10-28 13:04:39,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:39,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:40,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:41,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:41,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-28 13:04:41,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:04:41,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1823 [2020-10-28 13:04:41,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:41,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-28 13:04:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 13:04:41,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:41,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:41,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:41,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:41,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:41,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:41,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:04:41,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:41,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:41,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:41,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:41,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:41,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:41,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:41,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:42,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:42,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:04:42,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:42,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-28 13:04:42,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:42,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:42,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:42,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:42,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-28 13:04:42,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:04:42,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589501078] [2020-10-28 13:04:42,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:04:42,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:04:42,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262650928] [2020-10-28 13:04:42,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:04:42,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:42,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:04:42,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:04:42,297 INFO L87 Difference]: Start difference. First operand 2599 states and 2970 transitions. Second operand 5 states. [2020-10-28 13:04:50,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:50,580 INFO L93 Difference]: Finished difference Result 7101 states and 8282 transitions. [2020-10-28 13:04:50,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:04:50,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 286 [2020-10-28 13:04:50,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:50,611 INFO L225 Difference]: With dead ends: 7101 [2020-10-28 13:04:50,611 INFO L226 Difference]: Without dead ends: 4508 [2020-10-28 13:04:50,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:04:50,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4508 states. [2020-10-28 13:04:50,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4508 to 4486. [2020-10-28 13:04:50,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4486 states. [2020-10-28 13:04:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 5067 transitions. [2020-10-28 13:04:50,737 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 5067 transitions. Word has length 286 [2020-10-28 13:04:50,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:50,739 INFO L481 AbstractCegarLoop]: Abstraction has 4486 states and 5067 transitions. [2020-10-28 13:04:50,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:04:50,739 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 5067 transitions. [2020-10-28 13:04:50,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-28 13:04:50,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:50,746 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:04:50,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:04:50,747 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:50,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:50,747 INFO L82 PathProgramCache]: Analyzing trace with hash -408640203, now seen corresponding path program 1 times [2020-10-28 13:04:50,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:50,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321078500] [2020-10-28 13:04:50,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:50,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:51,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:52,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:55,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:55,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-28 13:04:55,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:04:55,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 13:04:55,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:55,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:55,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:04:55,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:04:55,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:04:55,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:56,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:56,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:56,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:56,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:56,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:56,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:04:56,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:56,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:56,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:04:56,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:56,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:56,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:56,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:56,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:04:56,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:56,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-28 13:04:56,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:56,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:04:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:04:56,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:56,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 13:04:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:56,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:57,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:57,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:04:57,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:57,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:04:57,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:57,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:57,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:57,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 13:04:57,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:57,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:04:57,446 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 82 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:04:57,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321078500] [2020-10-28 13:04:57,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:04:57,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:04:57,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125649491] [2020-10-28 13:04:57,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:04:57,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:57,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:04:57,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:04:57,450 INFO L87 Difference]: Start difference. First operand 4486 states and 5067 transitions. Second operand 7 states. [2020-10-28 13:05:07,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:07,259 INFO L93 Difference]: Finished difference Result 9340 states and 10544 transitions. [2020-10-28 13:05:07,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:05:07,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 334 [2020-10-28 13:05:07,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:07,289 INFO L225 Difference]: With dead ends: 9340 [2020-10-28 13:05:07,290 INFO L226 Difference]: Without dead ends: 4860 [2020-10-28 13:05:07,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:05:07,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4860 states. [2020-10-28 13:05:07,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4860 to 4824. [2020-10-28 13:05:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4824 states. [2020-10-28 13:05:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 5427 transitions. [2020-10-28 13:05:07,456 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 5427 transitions. Word has length 334 [2020-10-28 13:05:07,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:07,457 INFO L481 AbstractCegarLoop]: Abstraction has 4824 states and 5427 transitions. [2020-10-28 13:05:07,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:05:07,457 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 5427 transitions. [2020-10-28 13:05:07,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-10-28 13:05:07,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:07,468 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:07,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:05:07,469 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:07,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:07,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1173097172, now seen corresponding path program 1 times [2020-10-28 13:05:07,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:07,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120488607] [2020-10-28 13:05:07,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:07,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:08,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:10,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:10,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-28 13:05:10,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:05:10,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2452 [2020-10-28 13:05:10,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:10,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:10,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:10,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-28 13:05:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 13:05:10,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:10,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:10,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:10,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:10,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:10,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:10,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:05:10,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:10,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:10,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:10,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:10,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:10,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:10,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:10,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:10,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:10,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:05:10,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:10,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-28 13:05:10,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:10,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-28 13:05:10,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:10,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:05:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:10,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:11,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:11,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:05:11,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:11,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 13:05:11,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:11,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:05:11,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:05:11,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120488607] [2020-10-28 13:05:11,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:05:11,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:05:11,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761739519] [2020-10-28 13:05:11,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:05:11,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:11,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:05:11,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:05:11,209 INFO L87 Difference]: Start difference. First operand 4824 states and 5427 transitions. Second operand 7 states. [2020-10-28 13:05:20,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:20,807 INFO L93 Difference]: Finished difference Result 11321 states and 13018 transitions. [2020-10-28 13:05:20,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:05:20,810 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 420 [2020-10-28 13:05:20,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:20,851 INFO L225 Difference]: With dead ends: 11321 [2020-10-28 13:05:20,851 INFO L226 Difference]: Without dead ends: 6810 [2020-10-28 13:05:20,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:05:20,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6810 states. [2020-10-28 13:05:21,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6810 to 6753. [2020-10-28 13:05:21,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6753 states. [2020-10-28 13:05:21,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6753 states to 6753 states and 7514 transitions. [2020-10-28 13:05:21,071 INFO L78 Accepts]: Start accepts. Automaton has 6753 states and 7514 transitions. Word has length 420 [2020-10-28 13:05:21,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:21,072 INFO L481 AbstractCegarLoop]: Abstraction has 6753 states and 7514 transitions. [2020-10-28 13:05:21,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:05:21,073 INFO L276 IsEmpty]: Start isEmpty. Operand 6753 states and 7514 transitions. [2020-10-28 13:05:21,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-28 13:05:21,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:21,085 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:21,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:05:21,086 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:21,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:21,087 INFO L82 PathProgramCache]: Analyzing trace with hash -567086962, now seen corresponding path program 1 times [2020-10-28 13:05:21,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:21,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598294128] [2020-10-28 13:05:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:21,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:21,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:23,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:23,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 448 [2020-10-28 13:05:23,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:05:23,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2647 [2020-10-28 13:05:23,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:23,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:23,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:23,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:05:23,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:05:23,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:24,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:24,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:24,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:24,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:24,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:24,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:05:24,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:24,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:24,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:24,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:24,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:24,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:24,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:24,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:24,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:24,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:05:24,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:24,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-28 13:05:24,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:24,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:05:24,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:24,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:05:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:24,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:24,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:24,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:05:24,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:24,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-28 13:05:24,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:24,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:24,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:24,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:24,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:05:24,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:25,345 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:05:25,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598294128] [2020-10-28 13:05:25,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:05:25,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:05:25,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740322974] [2020-10-28 13:05:25,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:05:25,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:25,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:05:25,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:05:25,348 INFO L87 Difference]: Start difference. First operand 6753 states and 7514 transitions. Second operand 7 states. [2020-10-28 13:05:35,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:35,942 INFO L93 Difference]: Finished difference Result 13559 states and 15100 transitions. [2020-10-28 13:05:35,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:05:35,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 434 [2020-10-28 13:05:35,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:35,984 INFO L225 Difference]: With dead ends: 13559 [2020-10-28 13:05:35,984 INFO L226 Difference]: Without dead ends: 7119 [2020-10-28 13:05:36,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:05:36,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7119 states. [2020-10-28 13:05:36,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7119 to 6465. [2020-10-28 13:05:36,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6465 states. [2020-10-28 13:05:36,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6465 states to 6465 states and 7219 transitions. [2020-10-28 13:05:36,248 INFO L78 Accepts]: Start accepts. Automaton has 6465 states and 7219 transitions. Word has length 434 [2020-10-28 13:05:36,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:36,249 INFO L481 AbstractCegarLoop]: Abstraction has 6465 states and 7219 transitions. [2020-10-28 13:05:36,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:05:36,249 INFO L276 IsEmpty]: Start isEmpty. Operand 6465 states and 7219 transitions. [2020-10-28 13:05:36,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2020-10-28 13:05:36,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:36,262 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:36,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:05:36,263 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:36,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:36,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1137826710, now seen corresponding path program 1 times [2020-10-28 13:05:36,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:36,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792134705] [2020-10-28 13:05:36,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:36,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:37,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:37,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-10-28 13:05:37,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:37,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 714 [2020-10-28 13:05:37,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:37,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:37,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:37,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:05:37,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 13:05:37,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:37,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:37,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:37,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:37,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:37,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:37,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:05:37,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:37,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:37,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:37,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:37,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:37,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:37,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:37,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:37,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:37,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:05:37,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:37,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:05:37,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:37,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:37,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:37,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:05:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:37,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:37,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:37,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:05:37,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:37,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:05:37,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:37,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:05:37,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:05:37,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792134705] [2020-10-28 13:05:37,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:05:37,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:05:37,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492547024] [2020-10-28 13:05:37,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:05:37,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:37,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:05:37,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:05:37,956 INFO L87 Difference]: Start difference. First operand 6465 states and 7219 transitions. Second operand 5 states. [2020-10-28 13:05:40,053 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:05:46,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:46,891 INFO L93 Difference]: Finished difference Result 14517 states and 16645 transitions. [2020-10-28 13:05:46,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:05:46,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 446 [2020-10-28 13:05:46,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:46,930 INFO L225 Difference]: With dead ends: 14517 [2020-10-28 13:05:46,930 INFO L226 Difference]: Without dead ends: 8365 [2020-10-28 13:05:46,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:05:46,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8365 states. [2020-10-28 13:05:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8365 to 8349. [2020-10-28 13:05:47,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8349 states. [2020-10-28 13:05:47,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8349 states to 8349 states and 9275 transitions. [2020-10-28 13:05:47,131 INFO L78 Accepts]: Start accepts. Automaton has 8349 states and 9275 transitions. Word has length 446 [2020-10-28 13:05:47,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:47,132 INFO L481 AbstractCegarLoop]: Abstraction has 8349 states and 9275 transitions. [2020-10-28 13:05:47,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:05:47,132 INFO L276 IsEmpty]: Start isEmpty. Operand 8349 states and 9275 transitions. [2020-10-28 13:05:47,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-10-28 13:05:47,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:47,138 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:47,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:05:47,138 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:47,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:47,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1578005228, now seen corresponding path program 1 times [2020-10-28 13:05:47,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:47,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002224825] [2020-10-28 13:05:47,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:47,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:47,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:49,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:49,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-28 13:05:49,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:05:49,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2664 [2020-10-28 13:05:49,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:49,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:49,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:49,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 445 [2020-10-28 13:05:49,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 13:05:49,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:50,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:50,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:50,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:50,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:50,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:50,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:05:50,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:50,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:50,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:50,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:50,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:50,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:50,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:05:50,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:50,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 13:05:50,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:50,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:50,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:50,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:50,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:50,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:05:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:50,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:50,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:50,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 13:05:50,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:50,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 13:05:50,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:50,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 13:05:50,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-28 13:05:50,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002224825] [2020-10-28 13:05:50,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:05:50,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:05:50,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070484551] [2020-10-28 13:05:50,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:05:50,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:50,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:05:50,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:05:50,780 INFO L87 Difference]: Start difference. First operand 8349 states and 9275 transitions. Second operand 5 states. [2020-10-28 13:06:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:06:02,000 INFO L93 Difference]: Finished difference Result 19822 states and 22355 transitions. [2020-10-28 13:06:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:06:02,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 482 [2020-10-28 13:06:02,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:06:02,046 INFO L225 Difference]: With dead ends: 19822 [2020-10-28 13:06:02,047 INFO L226 Difference]: Without dead ends: 11786 [2020-10-28 13:06:02,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:06:02,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11786 states. [2020-10-28 13:06:02,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11786 to 10532. [2020-10-28 13:06:02,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10532 states. [2020-10-28 13:06:02,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10532 states to 10532 states and 11767 transitions. [2020-10-28 13:06:02,362 INFO L78 Accepts]: Start accepts. Automaton has 10532 states and 11767 transitions. Word has length 482 [2020-10-28 13:06:02,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:06:02,364 INFO L481 AbstractCegarLoop]: Abstraction has 10532 states and 11767 transitions. [2020-10-28 13:06:02,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:06:02,364 INFO L276 IsEmpty]: Start isEmpty. Operand 10532 states and 11767 transitions. [2020-10-28 13:06:02,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2020-10-28 13:06:02,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:06:02,375 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:06:02,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:06:02,376 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:06:02,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:06:02,377 INFO L82 PathProgramCache]: Analyzing trace with hash -89223890, now seen corresponding path program 1 times [2020-10-28 13:06:02,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:06:02,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545686501] [2020-10-28 13:06:02,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:06:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:02,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:02,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:04,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:04,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:06,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:07,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:07,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:07,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 590 [2020-10-28 13:06:07,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:06:07,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4988 [2020-10-28 13:06:07,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:07,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:06:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 537 [2020-10-28 13:06:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:06:07,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:07,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:06:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:07,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:07,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:07,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:06:07,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:07,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:06:07,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:07,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:07,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:07,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:07,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:07,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:07,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:06:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:07,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:07,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:07,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:06:07,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:07,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:06:07,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:07,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:07,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:07,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:07,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:07,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:07,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:06:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:07,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:08,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:08,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:06:08,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:08,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:06:08,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:08,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:08,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:08,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:08,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:08,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:08,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:06:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:08,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:08,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:08,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 13:06:08,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:08,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-28 13:06:08,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:08,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:08,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:06:08,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-28 13:06:08,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:06:08,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2020-10-28 13:06:08,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545686501] [2020-10-28 13:06:08,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:06:08,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 13:06:08,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517792230] [2020-10-28 13:06:08,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:06:08,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:06:08,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:06:08,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:06:08,471 INFO L87 Difference]: Start difference. First operand 10532 states and 11767 transitions. Second operand 5 states. [2020-10-28 13:06:08,616 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:06:17,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:06:17,661 INFO L93 Difference]: Finished difference Result 21365 states and 23895 transitions. [2020-10-28 13:06:17,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:06:17,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 574 [2020-10-28 13:06:17,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:06:17,714 INFO L225 Difference]: With dead ends: 21365 [2020-10-28 13:06:17,714 INFO L226 Difference]: Without dead ends: 11146 [2020-10-28 13:06:17,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:06:17,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11146 states. [2020-10-28 13:06:17,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11146 to 10528. [2020-10-28 13:06:17,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10528 states. [2020-10-28 13:06:17,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 11753 transitions. [2020-10-28 13:06:17,978 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 11753 transitions. Word has length 574 [2020-10-28 13:06:17,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:06:17,979 INFO L481 AbstractCegarLoop]: Abstraction has 10528 states and 11753 transitions. [2020-10-28 13:06:17,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:06:17,980 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 11753 transitions. [2020-10-28 13:06:17,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2020-10-28 13:06:17,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:06:17,992 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:06:17,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:06:17,993 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:06:17,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:06:17,994 INFO L82 PathProgramCache]: Analyzing trace with hash 718038039, now seen corresponding path program 1 times [2020-10-28 13:06:17,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:06:17,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903448955] [2020-10-28 13:06:17,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:06:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:18,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:18,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:21,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:21,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 616 [2020-10-28 13:06:21,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:06:21,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3472 [2020-10-28 13:06:21,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:21,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:06:21,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 13:06:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:21,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:06:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:21,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:21,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:21,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:06:21,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:21,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:06:21,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:21,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:21,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:21,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:21,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:21,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:21,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:06:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:21,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:22,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:22,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:06:22,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:22,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 13:06:22,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:22,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:22,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:22,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:06:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:22,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:22,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:22,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:06:22,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:22,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:06:22,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:22,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:06:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:06:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:22,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:06:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:22,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:22,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:22,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 13:06:22,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:22,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-28 13:06:22,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:22,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:06:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-28 13:06:22,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 387 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:06:23,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903448955] [2020-10-28 13:06:23,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:06:23,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:06:23,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506569962] [2020-10-28 13:06:23,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:06:23,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:06:23,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:06:23,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:06:23,167 INFO L87 Difference]: Start difference. First operand 10528 states and 11753 transitions. Second operand 7 states. [2020-10-28 13:06:36,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:06:36,326 INFO L93 Difference]: Finished difference Result 24511 states and 27771 transitions. [2020-10-28 13:06:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:06:36,331 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 600 [2020-10-28 13:06:36,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:06:36,377 INFO L225 Difference]: With dead ends: 24511 [2020-10-28 13:06:36,377 INFO L226 Difference]: Without dead ends: 14296 [2020-10-28 13:06:36,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:06:36,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14296 states. [2020-10-28 13:06:36,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14296 to 12422. [2020-10-28 13:06:36,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12422 states. [2020-10-28 13:06:36,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12422 states to 12422 states and 14006 transitions. [2020-10-28 13:06:36,703 INFO L78 Accepts]: Start accepts. Automaton has 12422 states and 14006 transitions. Word has length 600 [2020-10-28 13:06:36,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:06:36,705 INFO L481 AbstractCegarLoop]: Abstraction has 12422 states and 14006 transitions. [2020-10-28 13:06:36,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:06:36,705 INFO L276 IsEmpty]: Start isEmpty. Operand 12422 states and 14006 transitions. [2020-10-28 13:06:36,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2020-10-28 13:06:36,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:06:36,719 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:06:36,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:06:36,719 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:06:36,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:06:36,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1224916996, now seen corresponding path program 1 times [2020-10-28 13:06:36,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:06:36,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499051276] [2020-10-28 13:06:36,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:06:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:37,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:37,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:40,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:41,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:41,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 627 [2020-10-28 13:06:41,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:06:41,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-28 13:06:41,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:41,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 576 [2020-10-28 13:06:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 13:06:41,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:42,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:06:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:42,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:42,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:42,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:06:42,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:42,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:06:42,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:42,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:42,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:42,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:06:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:42,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:42,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:42,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:06:42,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:42,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 13:06:42,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:42,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:42,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:06:42,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:06:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:42,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:42,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:42,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:06:42,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:42,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:06:42,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:42,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:42,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:42,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:42,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:06:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:42,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:42,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:42,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:06:42,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:42,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 13:06:42,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:42,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:42,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:06:42,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:42,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 13:06:42,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:43,008 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 126 proven. 3 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2020-10-28 13:06:43,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499051276] [2020-10-28 13:06:43,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:06:43,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:06:43,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140816632] [2020-10-28 13:06:43,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:06:43,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:06:43,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:06:43,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:06:43,010 INFO L87 Difference]: Start difference. First operand 12422 states and 14006 transitions. Second operand 5 states. [2020-10-28 13:06:54,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:06:54,524 INFO L93 Difference]: Finished difference Result 24824 states and 28064 transitions. [2020-10-28 13:06:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:06:54,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 611 [2020-10-28 13:06:54,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:06:54,572 INFO L225 Difference]: With dead ends: 24824 [2020-10-28 13:06:54,572 INFO L226 Difference]: Without dead ends: 12715 [2020-10-28 13:06:54,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:06:54,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12715 states. [2020-10-28 13:06:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12715 to 12707. [2020-10-28 13:06:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12707 states. [2020-10-28 13:06:54,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12707 states to 12707 states and 13820 transitions. [2020-10-28 13:06:54,849 INFO L78 Accepts]: Start accepts. Automaton has 12707 states and 13820 transitions. Word has length 611 [2020-10-28 13:06:54,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:06:54,850 INFO L481 AbstractCegarLoop]: Abstraction has 12707 states and 13820 transitions. [2020-10-28 13:06:54,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:06:54,850 INFO L276 IsEmpty]: Start isEmpty. Operand 12707 states and 13820 transitions. [2020-10-28 13:06:54,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2020-10-28 13:06:54,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:06:54,863 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:06:54,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:06:54,863 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:06:54,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:06:54,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1586589773, now seen corresponding path program 1 times [2020-10-28 13:06:54,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:06:54,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406098794] [2020-10-28 13:06:54,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:06:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:55,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:55,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:56,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:00,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:00,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 662 [2020-10-28 13:07:00,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:07:00,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 13:07:00,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:00,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:00,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:00,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:07:00,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 13:07:00,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:00,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:00,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:00,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:00,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:00,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:07:00,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:00,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:00,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:00,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:00,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:00,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:00,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:07:00,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:00,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:07:00,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:00,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:00,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:00,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:00,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:00,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:00,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:07:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:00,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:00,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:00,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:07:00,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:00,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:07:00,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:00,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:07:00,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:00,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:07:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:00,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:01,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:01,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 13:07:01,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:01,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-28 13:07:01,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:01,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 13:07:01,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:01,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2020-10-28 13:07:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:01,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:01,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:01,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:07:01,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:01,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:07:01,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:01,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:01,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:01,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:07:01,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:01,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:01,475 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 406 proven. 71 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-10-28 13:07:01,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406098794] [2020-10-28 13:07:01,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:07:01,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:07:01,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179111282] [2020-10-28 13:07:01,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:07:01,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:01,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:07:01,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:07:01,479 INFO L87 Difference]: Start difference. First operand 12707 states and 13820 transitions. Second operand 7 states. [2020-10-28 13:07:05,420 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:07:17,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:17,274 INFO L93 Difference]: Finished difference Result 33582 states and 36746 transitions. [2020-10-28 13:07:17,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:07:17,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 644 [2020-10-28 13:07:17,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:17,381 INFO L225 Difference]: With dead ends: 33582 [2020-10-28 13:07:17,381 INFO L226 Difference]: Without dead ends: 21188 [2020-10-28 13:07:17,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:07:17,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21188 states. [2020-10-28 13:07:17,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21188 to 19640. [2020-10-28 13:07:17,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19640 states. [2020-10-28 13:07:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19640 states to 19640 states and 21464 transitions. [2020-10-28 13:07:17,866 INFO L78 Accepts]: Start accepts. Automaton has 19640 states and 21464 transitions. Word has length 644 [2020-10-28 13:07:17,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:17,867 INFO L481 AbstractCegarLoop]: Abstraction has 19640 states and 21464 transitions. [2020-10-28 13:07:17,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:07:17,867 INFO L276 IsEmpty]: Start isEmpty. Operand 19640 states and 21464 transitions. [2020-10-28 13:07:17,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2020-10-28 13:07:17,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:17,887 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:07:17,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:07:17,888 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:17,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:17,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1101941080, now seen corresponding path program 1 times [2020-10-28 13:07:17,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:17,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468906370] [2020-10-28 13:07:17,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:18,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:18,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:20,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:22,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:22,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 686 [2020-10-28 13:07:22,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:07:22,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4123 [2020-10-28 13:07:22,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:22,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:22,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:22,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:07:22,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-28 13:07:22,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0