/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/Problem17_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:40:42,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:40:42,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:40:42,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:40:42,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:40:42,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:40:42,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:40:42,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:40:42,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:40:42,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:40:42,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:40:42,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:40:42,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:40:42,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:40:42,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:40:42,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:40:42,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:40:42,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:40:42,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:40:42,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:40:42,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:40:42,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:40:42,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:40:42,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:40:42,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:40:42,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:40:42,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:40:42,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:40:42,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:40:42,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:40:42,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:40:42,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:40:42,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:40:42,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:40:42,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:40:42,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:40:42,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:40:42,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:40:42,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:40:42,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:40:42,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:40:42,267 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 13:40:42,318 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:40:42,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:40:42,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:40:42,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:40:42,323 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:40:42,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:40:42,323 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:40:42,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:40:42,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:40:42,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:40:42,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:40:42,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:40:42,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:40:42,325 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:40:42,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:40:42,326 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:40:42,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:40:42,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:40:42,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:40:42,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:40:42,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:40:42,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:40:42,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:40:42,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:40:42,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:40:42,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:40:42,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:40:42,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:40:42,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:40:42,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:40:42,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:40:42,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:40:42,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:40:42,763 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:40:42,764 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:40:42,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label42.c [2020-10-28 13:40:42,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7da6ae1d/50838d913eec42c7916dc6ca810f796c/FLAG9827a8d13 [2020-10-28 13:40:43,788 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:40:43,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label42.c [2020-10-28 13:40:43,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7da6ae1d/50838d913eec42c7916dc6ca810f796c/FLAG9827a8d13 [2020-10-28 13:40:43,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7da6ae1d/50838d913eec42c7916dc6ca810f796c [2020-10-28 13:40:43,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:40:43,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:40:43,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:40:43,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:40:43,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:40:43,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:40:43" (1/1) ... [2020-10-28 13:40:43,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7afc6b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:40:43, skipping insertion in model container [2020-10-28 13:40:43,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:40:43" (1/1) ... [2020-10-28 13:40:43,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:40:44,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:40:45,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:40:45,064 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:40:45,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:40:45,674 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:40:45,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:40:45 WrapperNode [2020-10-28 13:40:45,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:40:45,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:40:45,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:40:45,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:40:45,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:40:45" (1/1) ... [2020-10-28 13:40:45,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:40:45" (1/1) ... [2020-10-28 13:40:45,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:40:45" (1/1) ... [2020-10-28 13:40:45,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:40:45" (1/1) ... [2020-10-28 13:40:45,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:40:45" (1/1) ... [2020-10-28 13:40:45,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:40:45" (1/1) ... [2020-10-28 13:40:45,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:40:45" (1/1) ... [2020-10-28 13:40:45,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:40:45,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:40:45,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:40:45,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:40:45,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:40:45" (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 13:40:46,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:40:46,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:40:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:40:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:40:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:40:46,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:40:46,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:40:46,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:40:46,037 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:40:46,037 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:40:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:40:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:40:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:40:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:40:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:40:46,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:40:46,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:40:46,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:40:46,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:40:46,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:40:46,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:40:54,803 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:40:54,803 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:40:54,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:40:54 BoogieIcfgContainer [2020-10-28 13:40:54,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:40:54,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:40:54,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:40:54,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:40:54,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:40:43" (1/3) ... [2020-10-28 13:40:54,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49fe4feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:40:54, skipping insertion in model container [2020-10-28 13:40:54,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:40:45" (2/3) ... [2020-10-28 13:40:54,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49fe4feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:40:54, skipping insertion in model container [2020-10-28 13:40:54,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:40:54" (3/3) ... [2020-10-28 13:40:54,819 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label42.c [2020-10-28 13:40:54,832 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:40:54,838 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:40:54,853 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:40:54,898 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:40:54,898 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:40:54,898 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:40:54,898 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:40:54,899 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:40:54,899 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:40:54,899 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:40:54,899 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:40:54,940 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:40:54,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 13:40:54,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:40:54,949 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] [2020-10-28 13:40:54,949 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:40:54,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:40:54,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1081277931, now seen corresponding path program 1 times [2020-10-28 13:40:54,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:40:54,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788274918] [2020-10-28 13:40:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:40:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:55,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:55,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:55,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 13:40:55,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:55,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-28 13:40:55,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:55,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:55,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:40:55,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:40:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 13:40:55,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:40:55,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:40:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:55,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:55,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:55,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:40:55,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:55,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:40:55,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:55,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:40:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:40:55,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:55,990 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 13:40:55,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788274918] [2020-10-28 13:40:55,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:40:55,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:40:55,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396877025] [2020-10-28 13:40:56,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:40:56,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:40:56,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:40:56,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:40:56,022 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:41:08,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:41:08,890 INFO L93 Difference]: Finished difference Result 1694 states and 3092 transitions. [2020-10-28 13:41:08,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:41:08,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-28 13:41:08,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:41:08,916 INFO L225 Difference]: With dead ends: 1694 [2020-10-28 13:41:08,916 INFO L226 Difference]: Without dead ends: 1010 [2020-10-28 13:41:08,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:41:08,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-28 13:41:09,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 992. [2020-10-28 13:41:09,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2020-10-28 13:41:09,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1527 transitions. [2020-10-28 13:41:09,078 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1527 transitions. Word has length 47 [2020-10-28 13:41:09,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:41:09,079 INFO L481 AbstractCegarLoop]: Abstraction has 992 states and 1527 transitions. [2020-10-28 13:41:09,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:41:09,079 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1527 transitions. [2020-10-28 13:41:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 13:41:09,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:41:09,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:41:09,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:41:09,091 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:41:09,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:41:09,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1676973866, now seen corresponding path program 1 times [2020-10-28 13:41:09,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:41:09,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071135592] [2020-10-28 13:41:09,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:41:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:09,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:09,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:10,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:10,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:10,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:41:10,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:41:10,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1640 [2020-10-28 13:41:10,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:10,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:10,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:41:10,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:41:10,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:41:10,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:41:10,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:41:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:10,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:10,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:41:10,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:41:10,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:10,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:41:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:41:10,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 13:41:10,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:41:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:11,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:11,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:11,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:41:11,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:11,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 13:41:11,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:11,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:11,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:41:11,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:41:11,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:41:11,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:41:11,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071135592] [2020-10-28 13:41:11,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:41:11,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:41:11,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800601588] [2020-10-28 13:41:11,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:41:11,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:41:11,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:41:11,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:41:11,249 INFO L87 Difference]: Start difference. First operand 992 states and 1527 transitions. Second operand 7 states. [2020-10-28 13:41:27,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:41:27,066 INFO L93 Difference]: Finished difference Result 2447 states and 3895 transitions. [2020-10-28 13:41:27,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:41:27,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-28 13:41:27,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:41:27,077 INFO L225 Difference]: With dead ends: 2447 [2020-10-28 13:41:27,077 INFO L226 Difference]: Without dead ends: 1461 [2020-10-28 13:41:27,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:41:27,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2020-10-28 13:41:27,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1433. [2020-10-28 13:41:27,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1433 states. [2020-10-28 13:41:27,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1859 transitions. [2020-10-28 13:41:27,141 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1859 transitions. Word has length 118 [2020-10-28 13:41:27,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:41:27,142 INFO L481 AbstractCegarLoop]: Abstraction has 1433 states and 1859 transitions. [2020-10-28 13:41:27,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:41:27,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1859 transitions. [2020-10-28 13:41:27,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 13:41:27,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:41:27,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:41:27,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:41:27,146 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:41:27,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:41:27,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1136622305, now seen corresponding path program 1 times [2020-10-28 13:41:27,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:41:27,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563048560] [2020-10-28 13:41:27,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:41:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:27,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:27,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:28,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:28,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 13:41:28,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:41:28,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1102 [2020-10-28 13:41:28,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:28,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:28,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:41:28,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:41:28,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 13:41:28,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:28,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:41:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:28,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:28,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:28,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:41:28,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:28,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:41:28,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:28,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:28,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:41:28,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:28,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:41:28,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:28,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:41:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:28,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:28,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:28,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:41:28,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:28,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:41:28,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:28,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:41:28,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:28,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:41:28,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:41:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:41:28,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563048560] [2020-10-28 13:41:28,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:41:28,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:41:28,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455007819] [2020-10-28 13:41:28,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:41:28,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:41:28,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:41:28,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:41:28,712 INFO L87 Difference]: Start difference. First operand 1433 states and 1859 transitions. Second operand 5 states. [2020-10-28 13:41:42,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:41:42,101 INFO L93 Difference]: Finished difference Result 3334 states and 4575 transitions. [2020-10-28 13:41:42,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:41:42,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-28 13:41:42,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:41:42,116 INFO L225 Difference]: With dead ends: 3334 [2020-10-28 13:41:42,116 INFO L226 Difference]: Without dead ends: 1894 [2020-10-28 13:41:42,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:41:42,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2020-10-28 13:41:42,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1884. [2020-10-28 13:41:42,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-28 13:41:42,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2302 transitions. [2020-10-28 13:41:42,174 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2302 transitions. Word has length 121 [2020-10-28 13:41:42,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:41:42,177 INFO L481 AbstractCegarLoop]: Abstraction has 1884 states and 2302 transitions. [2020-10-28 13:41:42,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:41:42,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2302 transitions. [2020-10-28 13:41:42,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-28 13:41:42,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:41:42,185 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:41:42,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:41:42,186 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:41:42,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:41:42,186 INFO L82 PathProgramCache]: Analyzing trace with hash -226973617, now seen corresponding path program 1 times [2020-10-28 13:41:42,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:41:42,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576647406] [2020-10-28 13:41:42,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:41:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:42,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:42,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:43,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:43,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-28 13:41:43,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:41:43,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1215 [2020-10-28 13:41:43,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:43,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:43,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:41:43,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:41:43,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:41:43,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:41:43,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:41:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:43,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:43,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:43,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:41:43,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:43,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:41:43,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:43,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:41:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:41:43,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:41:43,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:41:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:43,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:43,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:43,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:41:43,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:43,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 13:41:43,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:43,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:41:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:41:43,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:43,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:41:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:43,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:43,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:43,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:41:43,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:43,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 13:41:43,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:43,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:43,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:41:43,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:41:43,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:41:43,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:44,089 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:41:44,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576647406] [2020-10-28 13:41:44,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:41:44,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:41:44,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410956222] [2020-10-28 13:41:44,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:41:44,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:41:44,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:41:44,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:41:44,093 INFO L87 Difference]: Start difference. First operand 1884 states and 2302 transitions. Second operand 7 states. [2020-10-28 13:41:54,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:41:54,110 INFO L93 Difference]: Finished difference Result 4247 states and 5486 transitions. [2020-10-28 13:41:54,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:41:54,111 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-10-28 13:41:54,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:41:54,128 INFO L225 Difference]: With dead ends: 4247 [2020-10-28 13:41:54,128 INFO L226 Difference]: Without dead ends: 2802 [2020-10-28 13:41:54,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:41:54,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2020-10-28 13:41:54,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 2793. [2020-10-28 13:41:54,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2793 states. [2020-10-28 13:41:54,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2793 states to 2793 states and 3414 transitions. [2020-10-28 13:41:54,221 INFO L78 Accepts]: Start accepts. Automaton has 2793 states and 3414 transitions. Word has length 207 [2020-10-28 13:41:54,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:41:54,223 INFO L481 AbstractCegarLoop]: Abstraction has 2793 states and 3414 transitions. [2020-10-28 13:41:54,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:41:54,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2793 states and 3414 transitions. [2020-10-28 13:41:54,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-28 13:41:54,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:41:54,229 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:41:54,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:41:54,229 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:41:54,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:41:54,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1620004813, now seen corresponding path program 1 times [2020-10-28 13:41:54,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:41:54,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795644962] [2020-10-28 13:41:54,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:41:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:54,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:54,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:55,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:56,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:59,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:59,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-28 13:41:59,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:41:59,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 13:41:59,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:59,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:41:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:41:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 13:41:59,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:41:59,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:41:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:59,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:59,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:59,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:41:59,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:59,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:41:59,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:59,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:59,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:41:59,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:59,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:41:59,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:59,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:41:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:59,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:59,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:59,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:41:59,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:59,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:41:59,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:59,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:41:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:41:59,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:41:59,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:41:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:41:59,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:41:59,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:41:59,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:41:59,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:41:59,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:41:59,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:41:59,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:41:59,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:41:59,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:41:59,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:41:59,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:41:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:41:59,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795644962] [2020-10-28 13:41:59,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:41:59,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:41:59,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834325928] [2020-10-28 13:41:59,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:41:59,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:41:59,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:41:59,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:41:59,761 INFO L87 Difference]: Start difference. First operand 2793 states and 3414 transitions. Second operand 5 states. [2020-10-28 13:42:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:42:10,198 INFO L93 Difference]: Finished difference Result 7347 states and 9317 transitions. [2020-10-28 13:42:10,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:42:10,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2020-10-28 13:42:10,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:42:10,250 INFO L225 Difference]: With dead ends: 7347 [2020-10-28 13:42:10,250 INFO L226 Difference]: Without dead ends: 4992 [2020-10-28 13:42:10,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 13:42:10,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4992 states. [2020-10-28 13:42:10,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4992 to 4556. [2020-10-28 13:42:10,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4556 states. [2020-10-28 13:42:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 5459 transitions. [2020-10-28 13:42:10,372 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 5459 transitions. Word has length 209 [2020-10-28 13:42:10,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:42:10,373 INFO L481 AbstractCegarLoop]: Abstraction has 4556 states and 5459 transitions. [2020-10-28 13:42:10,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:42:10,373 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 5459 transitions. [2020-10-28 13:42:10,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-28 13:42:10,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:42:10,377 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:42:10,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:42:10,377 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:42:10,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:42:10,378 INFO L82 PathProgramCache]: Analyzing trace with hash 740972285, now seen corresponding path program 1 times [2020-10-28 13:42:10,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:42:10,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501150758] [2020-10-28 13:42:10,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:42:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:10,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:10,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:15,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:15,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-28 13:42:15,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:42:15,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-28 13:42:15,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:15,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:15,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:42:15,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:42:15,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 13:42:15,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:15,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:42:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:15,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:15,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:15,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:42:15,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:15,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:42:15,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:15,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:15,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:15,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:42:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:15,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:15,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:15,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:42:15,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:15,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:42:15,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:15,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:15,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:15,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:15,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:42:15,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:15,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:42:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:15,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:16,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:16,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:16,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:42:16,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:42:16,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-28 13:42:16,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:16,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:42:16,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:42:16,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501150758] [2020-10-28 13:42:16,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:42:16,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:42:16,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610925638] [2020-10-28 13:42:16,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:42:16,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:42:16,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:42:16,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:42:16,284 INFO L87 Difference]: Start difference. First operand 4556 states and 5459 transitions. Second operand 5 states. [2020-10-28 13:42:26,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:42:26,390 INFO L93 Difference]: Finished difference Result 9549 states and 11674 transitions. [2020-10-28 13:42:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:42:26,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-28 13:42:26,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:42:26,415 INFO L225 Difference]: With dead ends: 9549 [2020-10-28 13:42:26,415 INFO L226 Difference]: Without dead ends: 4999 [2020-10-28 13:42:26,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:42:26,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4999 states. [2020-10-28 13:42:26,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4999 to 4992. [2020-10-28 13:42:26,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4992 states. [2020-10-28 13:42:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4992 states to 4992 states and 6186 transitions. [2020-10-28 13:42:26,576 INFO L78 Accepts]: Start accepts. Automaton has 4992 states and 6186 transitions. Word has length 220 [2020-10-28 13:42:26,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:42:26,577 INFO L481 AbstractCegarLoop]: Abstraction has 4992 states and 6186 transitions. [2020-10-28 13:42:26,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:42:26,577 INFO L276 IsEmpty]: Start isEmpty. Operand 4992 states and 6186 transitions. [2020-10-28 13:42:26,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-28 13:42:26,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:42:26,584 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:42:26,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:42:26,585 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:42:26,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:42:26,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1133449332, now seen corresponding path program 1 times [2020-10-28 13:42:26,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:42:26,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326123504] [2020-10-28 13:42:26,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:42:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:26,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:29,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:30,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:30,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-28 13:42:30,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:42:30,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4088 [2020-10-28 13:42:30,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:30,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:30,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:42:30,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-28 13:42:30,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 13:42:30,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:30,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:42:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:30,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:30,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:30,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:42:30,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:30,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:42:30,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:30,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:30,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:30,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:42:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:30,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:31,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:31,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:42:31,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:31,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 13:42:31,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:31,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:31,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:31,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:31,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:31,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:31,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:42:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:31,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:31,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:31,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 13:42:31,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:31,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-28 13:42:31,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:31,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:31,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:31,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:31,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:42:31,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:42:31,627 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 13:42:31,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326123504] [2020-10-28 13:42:31,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:42:31,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:42:31,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835238235] [2020-10-28 13:42:31,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:42:31,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:42:31,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:42:31,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:42:31,631 INFO L87 Difference]: Start difference. First operand 4992 states and 6186 transitions. Second operand 5 states. [2020-10-28 13:42:44,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:42:44,357 INFO L93 Difference]: Finished difference Result 12226 states and 15456 transitions. [2020-10-28 13:42:44,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:42:44,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 275 [2020-10-28 13:42:44,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:42:44,388 INFO L225 Difference]: With dead ends: 12226 [2020-10-28 13:42:44,388 INFO L226 Difference]: Without dead ends: 6786 [2020-10-28 13:42:44,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:42:44,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6786 states. [2020-10-28 13:42:44,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6786 to 6345. [2020-10-28 13:42:44,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6345 states. [2020-10-28 13:42:44,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6345 states to 6345 states and 7537 transitions. [2020-10-28 13:42:44,561 INFO L78 Accepts]: Start accepts. Automaton has 6345 states and 7537 transitions. Word has length 275 [2020-10-28 13:42:44,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:42:44,562 INFO L481 AbstractCegarLoop]: Abstraction has 6345 states and 7537 transitions. [2020-10-28 13:42:44,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:42:44,562 INFO L276 IsEmpty]: Start isEmpty. Operand 6345 states and 7537 transitions. [2020-10-28 13:42:44,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-28 13:42:44,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:42:44,570 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:42:44,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:42:44,571 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:42:44,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:42:44,571 INFO L82 PathProgramCache]: Analyzing trace with hash 703442164, now seen corresponding path program 1 times [2020-10-28 13:42:44,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:42:44,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624656716] [2020-10-28 13:42:44,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:42:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:44,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:44,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:45,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:46,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:48,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:48,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:49,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:49,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-28 13:42:49,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:42:49,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 13:42:49,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:49,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:49,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:42:49,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:42:49,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 13:42:49,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:49,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:42:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:49,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:49,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:49,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:42:49,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:49,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:42:49,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:49,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:49,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:49,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:42:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:49,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:49,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:49,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:42:49,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:49,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:42:49,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:49,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:49,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:42:49,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:49,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:42:49,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:49,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:42:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:49,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:50,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:50,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:42:50,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:42:50,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 13:42:50,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:50,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:50,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:42:50,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:42:50,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:42:50,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:50,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:42:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:42:50,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:50,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:42:50,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:42:50,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:42:50,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:42:50,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-28 13:42:50,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:42:50,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:42:50,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:42:50,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:42:50,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 13:42:50,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:42:50,556 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 247 proven. 40 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 13:42:50,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624656716] [2020-10-28 13:42:50,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:42:50,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:42:50,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63401651] [2020-10-28 13:42:50,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:42:50,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:42:50,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:42:50,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:42:50,559 INFO L87 Difference]: Start difference. First operand 6345 states and 7537 transitions. Second operand 7 states. [2020-10-28 13:43:04,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:43:04,878 INFO L93 Difference]: Finished difference Result 16379 states and 19873 transitions. [2020-10-28 13:43:04,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:43:04,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 308 [2020-10-28 13:43:04,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:43:04,920 INFO L225 Difference]: With dead ends: 16379 [2020-10-28 13:43:04,921 INFO L226 Difference]: Without dead ends: 9600 [2020-10-28 13:43:04,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:43:04,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9600 states. [2020-10-28 13:43:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9600 to 8274. [2020-10-28 13:43:05,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8274 states. [2020-10-28 13:43:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8274 states to 8274 states and 9805 transitions. [2020-10-28 13:43:05,167 INFO L78 Accepts]: Start accepts. Automaton has 8274 states and 9805 transitions. Word has length 308 [2020-10-28 13:43:05,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:43:05,167 INFO L481 AbstractCegarLoop]: Abstraction has 8274 states and 9805 transitions. [2020-10-28 13:43:05,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:43:05,168 INFO L276 IsEmpty]: Start isEmpty. Operand 8274 states and 9805 transitions. [2020-10-28 13:43:05,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-28 13:43:05,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:43:05,177 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:43:05,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:43:05,177 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:43:05,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:43:05,178 INFO L82 PathProgramCache]: Analyzing trace with hash -126570859, now seen corresponding path program 1 times [2020-10-28 13:43:05,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:43:05,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172705760] [2020-10-28 13:43:05,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:43:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:05,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:05,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:06,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:07,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:07,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-28 13:43:07,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:43:07,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2679 [2020-10-28 13:43:07,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:07,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:43:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:43:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:43:07,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:43:08,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:43:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:08,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:08,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:08,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:43:08,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:08,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:43:08,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:08,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:08,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:08,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:08,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:08,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:08,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:43:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:08,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:08,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:08,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:43:08,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:08,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 13:43:08,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:08,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:43:08,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:08,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:43:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:08,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:08,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:43:08,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:08,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-28 13:43:08,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:08,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:08,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:43:08,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:43:08,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:43:08,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:08,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 13:43:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:08,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:08,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:08,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:43:08,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:08,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:43:08,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:08,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 13:43:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:08,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 205 proven. 87 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-28 13:43:08,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172705760] [2020-10-28 13:43:08,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:43:08,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:43:08,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166806496] [2020-10-28 13:43:08,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:43:08,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:43:08,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:43:08,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:43:08,898 INFO L87 Difference]: Start difference. First operand 8274 states and 9805 transitions. Second operand 7 states. [2020-10-28 13:43:20,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:43:20,962 INFO L93 Difference]: Finished difference Result 18424 states and 21793 transitions. [2020-10-28 13:43:20,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:43:20,965 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 331 [2020-10-28 13:43:20,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:43:21,002 INFO L225 Difference]: With dead ends: 18424 [2020-10-28 13:43:21,003 INFO L226 Difference]: Without dead ends: 10156 [2020-10-28 13:43:21,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:43:21,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10156 states. [2020-10-28 13:43:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10156 to 10112. [2020-10-28 13:43:21,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10112 states. [2020-10-28 13:43:21,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10112 states to 10112 states and 11908 transitions. [2020-10-28 13:43:21,265 INFO L78 Accepts]: Start accepts. Automaton has 10112 states and 11908 transitions. Word has length 331 [2020-10-28 13:43:21,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:43:21,266 INFO L481 AbstractCegarLoop]: Abstraction has 10112 states and 11908 transitions. [2020-10-28 13:43:21,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:43:21,266 INFO L276 IsEmpty]: Start isEmpty. Operand 10112 states and 11908 transitions. [2020-10-28 13:43:21,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-28 13:43:21,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:43:21,279 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:43:21,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:43:21,279 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:43:21,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:43:21,280 INFO L82 PathProgramCache]: Analyzing trace with hash -2145502675, now seen corresponding path program 1 times [2020-10-28 13:43:21,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:43:21,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945163532] [2020-10-28 13:43:21,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:43:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:21,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:21,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:23,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:26,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:26,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-28 13:43:26,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:43:26,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4943 [2020-10-28 13:43:26,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:26,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:26,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:43:26,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 309 [2020-10-28 13:43:26,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 13:43:26,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:26,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:43:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:26,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:26,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:26,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:43:26,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:26,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:43:26,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:26,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:26,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:26,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:26,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:26,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:26,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:43:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:26,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:26,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:26,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:43:26,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:26,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:43:26,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:26,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:26,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:26,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:26,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:26,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:26,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:43:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:26,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:26,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:26,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-28 13:43:26,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:26,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 13:43:26,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:26,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-28 13:43:26,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 13:43:26,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945163532] [2020-10-28 13:43:26,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:43:26,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:43:26,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998527783] [2020-10-28 13:43:26,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:43:26,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:43:26,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:43:26,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:43:26,855 INFO L87 Difference]: Start difference. First operand 10112 states and 11908 transitions. Second operand 5 states. [2020-10-28 13:43:40,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:43:40,264 INFO L93 Difference]: Finished difference Result 28673 states and 34465 transitions. [2020-10-28 13:43:40,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:43:40,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 344 [2020-10-28 13:43:40,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:43:40,348 INFO L225 Difference]: With dead ends: 28673 [2020-10-28 13:43:40,348 INFO L226 Difference]: Without dead ends: 18567 [2020-10-28 13:43:40,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:43:40,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18567 states. [2020-10-28 13:43:40,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18567 to 18085. [2020-10-28 13:43:40,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18085 states. [2020-10-28 13:43:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18085 states to 18085 states and 21871 transitions. [2020-10-28 13:43:40,781 INFO L78 Accepts]: Start accepts. Automaton has 18085 states and 21871 transitions. Word has length 344 [2020-10-28 13:43:40,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:43:40,782 INFO L481 AbstractCegarLoop]: Abstraction has 18085 states and 21871 transitions. [2020-10-28 13:43:40,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:43:40,782 INFO L276 IsEmpty]: Start isEmpty. Operand 18085 states and 21871 transitions. [2020-10-28 13:43:40,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-10-28 13:43:40,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:43:40,803 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:43:40,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:43:40,804 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:43:40,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:43:40,804 INFO L82 PathProgramCache]: Analyzing trace with hash -502626250, now seen corresponding path program 1 times [2020-10-28 13:43:40,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:43:40,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622903873] [2020-10-28 13:43:40,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:43:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:40,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:41,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:41,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:41,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:42,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:43,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:43,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:43,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:45,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:45,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-28 13:43:45,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 13:43:45,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4993 [2020-10-28 13:43:45,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:45,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:45,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:45,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:43:45,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-28 13:43:45,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:46,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:43:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:46,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:46,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:46,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:43:46,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:46,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:43:46,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:46,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:46,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:46,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:46,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:43:46,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:46,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:43:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:46,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:46,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:46,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:43:46,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:46,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 13:43:46,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:46,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:43:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:43:46,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:46,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:43:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:46,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:46,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:46,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:46,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 13:43:46,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:43:46,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 13:43:46,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:46,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:46,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:43:46,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-28 13:43:46,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 13:43:46,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:46,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-28 13:43:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:46,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:46,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:43:46,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 13:43:46,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:43:46,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:43:46,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:43:46,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:43:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:43:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 13:43:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:43:46,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:43:46,670 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2020-10-28 13:43:46,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622903873] [2020-10-28 13:43:46,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:43:46,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:43:46,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755484928] [2020-10-28 13:43:46,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:43:46,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:43:46,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:43:46,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:43:46,681 INFO L87 Difference]: Start difference. First operand 18085 states and 21871 transitions. Second operand 6 states. [2020-10-28 13:43:58,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:43:58,156 INFO L93 Difference]: Finished difference Result 36138 states and 43783 transitions. [2020-10-28 13:43:58,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:43:58,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 428 [2020-10-28 13:43:58,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:43:58,216 INFO L225 Difference]: With dead ends: 36138 [2020-10-28 13:43:58,216 INFO L226 Difference]: Without dead ends: 18058 [2020-10-28 13:43:58,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:43:58,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18058 states. [2020-10-28 13:43:58,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18058 to 18039. [2020-10-28 13:43:58,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18039 states. [2020-10-28 13:43:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18039 states to 18039 states and 21770 transitions. [2020-10-28 13:43:58,755 INFO L78 Accepts]: Start accepts. Automaton has 18039 states and 21770 transitions. Word has length 428 [2020-10-28 13:43:58,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:43:58,755 INFO L481 AbstractCegarLoop]: Abstraction has 18039 states and 21770 transitions. [2020-10-28 13:43:58,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:43:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 18039 states and 21770 transitions. [2020-10-28 13:43:58,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-10-28 13:43:58,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:43:58,778 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:43:58,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:43:58,779 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:43:58,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:43:58,780 INFO L82 PathProgramCache]: Analyzing trace with hash -267105888, now seen corresponding path program 1 times [2020-10-28 13:43:58,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:43:58,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163658116] [2020-10-28 13:43:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:43:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:43:58,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:59,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:43:59,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:01,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:02,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:02,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:03,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:03,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 474 [2020-10-28 13:44:03,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:44:03,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 13:44:03,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:03,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:03,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:44:03,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 262 [2020-10-28 13:44:03,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:44:03,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:04,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:44:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:04,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:04,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:04,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:44:04,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:04,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:44:04,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:04,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:44:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:44:04,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:04,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:44:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:04,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:04,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:04,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:44:04,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:04,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:44:04,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:04,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:44:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:44:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:04,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:44:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:04,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:04,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:04,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:44:04,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:04,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:44:04,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:04,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:04,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:04,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:04,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 13:44:04,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:04,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-28 13:44:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:04,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:04,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:04,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 13:44:04,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:04,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-28 13:44:04,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:04,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:44:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:44:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 13:44:04,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 362 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:44:04,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163658116] [2020-10-28 13:44:04,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:44:04,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:44:04,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639232230] [2020-10-28 13:44:04,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:44:04,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:44:04,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:44:04,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:44:04,817 INFO L87 Difference]: Start difference. First operand 18039 states and 21770 transitions. Second operand 7 states. [2020-10-28 13:44:17,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:44:17,714 INFO L93 Difference]: Finished difference Result 48471 states and 59857 transitions. [2020-10-28 13:44:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:44:17,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 458 [2020-10-28 13:44:17,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:44:17,795 INFO L225 Difference]: With dead ends: 48471 [2020-10-28 13:44:17,795 INFO L226 Difference]: Without dead ends: 30438 [2020-10-28 13:44:17,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:44:17,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30438 states. [2020-10-28 13:44:18,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30438 to 27754. [2020-10-28 13:44:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27754 states. [2020-10-28 13:44:18,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27754 states to 27754 states and 34478 transitions. [2020-10-28 13:44:18,424 INFO L78 Accepts]: Start accepts. Automaton has 27754 states and 34478 transitions. Word has length 458 [2020-10-28 13:44:18,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:44:18,425 INFO L481 AbstractCegarLoop]: Abstraction has 27754 states and 34478 transitions. [2020-10-28 13:44:18,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:44:18,425 INFO L276 IsEmpty]: Start isEmpty. Operand 27754 states and 34478 transitions. [2020-10-28 13:44:18,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-10-28 13:44:18,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:44:18,454 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:18,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:44:18,455 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:44:18,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:44:18,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1941486513, now seen corresponding path program 1 times [2020-10-28 13:44:18,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:44:18,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938608580] [2020-10-28 13:44:18,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:44:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:18,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:18,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:19,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:23,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:23,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-28 13:44:23,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:44:23,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 13:44:23,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:23,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:23,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:44:23,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 308 [2020-10-28 13:44:23,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-28 13:44:23,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:23,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:44:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:23,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:23,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:23,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:44:23,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:23,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:44:23,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:23,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:44:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:44:23,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:23,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:44:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:23,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:23,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:23,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:44:23,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:23,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:44:23,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:23,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:23,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:44:23,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:23,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:44:23,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:23,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:44:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:23,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:24,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:24,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-28 13:44:24,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:24,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-28 13:44:24,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:24,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-28 13:44:24,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:24,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-10-28 13:44:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:24,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:24,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:24,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 13:44:24,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:24,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 13:44:24,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:24,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:44:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:44:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 13:44:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 362 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:44:24,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938608580] [2020-10-28 13:44:24,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:44:24,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:44:24,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063198940] [2020-10-28 13:44:24,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:44:24,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:44:24,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:44:24,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:44:24,598 INFO L87 Difference]: Start difference. First operand 27754 states and 34478 transitions. Second operand 7 states.