/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:08:38,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:08:38,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:08:38,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:08:38,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:08:38,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:08:38,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:08:38,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:08:38,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:08:38,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:08:38,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:08:38,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:08:38,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:08:38,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:08:38,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:08:38,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:08:38,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:08:38,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:08:38,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:08:38,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:08:38,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:08:38,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:08:38,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:08:38,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:08:38,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:08:38,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:08:38,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:08:38,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:08:38,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:08:38,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:08:38,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:08:38,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:08:38,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:08:38,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:08:38,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:08:38,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:08:38,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:08:38,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:08:38,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:08:38,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:08:38,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:08:38,994 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:08:39,055 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:08:39,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:08:39,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:08:39,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:08:39,063 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:08:39,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:08:39,064 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:08:39,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:08:39,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:08:39,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:08:39,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:08:39,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:08:39,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:08:39,066 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:08:39,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:08:39,067 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:08:39,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:08:39,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:08:39,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:08:39,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:08:39,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:08:39,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:08:39,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:08:39,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:08:39,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:08:39,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:08:39,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:08:39,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:08:39,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:08:39,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:08:39,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:08:39,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:08:39,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:08:39,552 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:08:39,553 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:08:39,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label52.c [2020-10-29 08:08:39,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8f28cb38/20e1e0873a744facb4ac2d27688c5374/FLAGf893942a3 [2020-10-29 08:08:40,596 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:08:40,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label52.c [2020-10-29 08:08:40,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8f28cb38/20e1e0873a744facb4ac2d27688c5374/FLAGf893942a3 [2020-10-29 08:08:40,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8f28cb38/20e1e0873a744facb4ac2d27688c5374 [2020-10-29 08:08:40,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:08:40,776 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:08:40,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:08:40,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:08:40,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:08:40,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:08:40" (1/1) ... [2020-10-29 08:08:40,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@232de4eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:08:40, skipping insertion in model container [2020-10-29 08:08:40,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:08:40" (1/1) ... [2020-10-29 08:08:40,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:08:40,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:08:41,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:08:41,670 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:08:41,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:08:41,956 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:08:41,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:08:41 WrapperNode [2020-10-29 08:08:41,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:08:41,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:08:41,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:08:41,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:08:41,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:08:41" (1/1) ... [2020-10-29 08:08:41,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:08:41" (1/1) ... [2020-10-29 08:08:42,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:08:41" (1/1) ... [2020-10-29 08:08:42,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:08:41" (1/1) ... [2020-10-29 08:08:42,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:08:41" (1/1) ... [2020-10-29 08:08:42,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:08:41" (1/1) ... [2020-10-29 08:08:42,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:08:41" (1/1) ... [2020-10-29 08:08:42,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:08:42,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:08:42,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:08:42,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:08:42,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:08:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:08:42,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:08:42,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:08:42,263 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:08:42,263 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:08:42,263 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:08:42,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:08:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:08:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:08:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:08:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:08:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:08:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:08:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:08:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:08:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:08:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:08:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:08:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:08:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:08:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:08:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:08:44,849 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:08:44,850 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:08:44,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:08:44 BoogieIcfgContainer [2020-10-29 08:08:44,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:08:44,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:08:44,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:08:44,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:08:44,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:08:40" (1/3) ... [2020-10-29 08:08:44,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65fdc139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:08:44, skipping insertion in model container [2020-10-29 08:08:44,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:08:41" (2/3) ... [2020-10-29 08:08:44,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65fdc139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:08:44, skipping insertion in model container [2020-10-29 08:08:44,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:08:44" (3/3) ... [2020-10-29 08:08:44,884 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label52.c [2020-10-29 08:08:44,897 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:08:44,903 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:08:44,918 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:08:44,951 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:08:44,952 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:08:44,952 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:08:44,952 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:08:44,952 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:08:44,952 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:08:44,953 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:08:44,953 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:08:44,983 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-29 08:08:44,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 08:08:44,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:08:44,992 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] [2020-10-29 08:08:44,993 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:08:45,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:08:45,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1025423708, now seen corresponding path program 1 times [2020-10-29 08:08:45,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:08:45,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776338536] [2020-10-29 08:08:45,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:08:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:45,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:45,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:45,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 08:08:45,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:45,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-29 08:08:45,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:45,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:08:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:08:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 08:08:45,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:08:45,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:08:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:45,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:45,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:45,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:08:45,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:45,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:08:45,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:45,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:08:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:08:45,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:08:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:08:46,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776338536] [2020-10-29 08:08:46,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:08:46,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:08:46,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259911688] [2020-10-29 08:08:46,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:08:46,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:08:46,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:08:46,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:08:46,031 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-29 08:08:50,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:08:50,924 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-29 08:08:50,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:08:50,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-29 08:08:50,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:08:50,948 INFO L225 Difference]: With dead ends: 1174 [2020-10-29 08:08:50,948 INFO L226 Difference]: Without dead ends: 697 [2020-10-29 08:08:50,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:08:50,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-29 08:08:51,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-29 08:08:51,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-29 08:08:51,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-29 08:08:51,075 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 36 [2020-10-29 08:08:51,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:08:51,076 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-29 08:08:51,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:08:51,076 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-29 08:08:51,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 08:08:51,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:08:51,082 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:08:51,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:08:51,083 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:08:51,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:08:51,084 INFO L82 PathProgramCache]: Analyzing trace with hash 76724004, now seen corresponding path program 1 times [2020-10-29 08:08:51,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:08:51,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450627736] [2020-10-29 08:08:51,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:08:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:51,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:51,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:52,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:52,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 08:08:52,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:08:52,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1173 [2020-10-29 08:08:52,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:52,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:08:52,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:08:52,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:08:52,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:08:52,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:08:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:52,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:52,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:52,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:08:52,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:52,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 08:08:52,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:52,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:08:52,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:08:52,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:08:52,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:08:52,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:08:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:52,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:52,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:08:52,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 08:08:52,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:08:52,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 08:08:52,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:08:52,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:08:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:08:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:08:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:08:52,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:08:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:08:52,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450627736] [2020-10-29 08:08:52,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:08:52,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:08:52,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324852897] [2020-10-29 08:08:52,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:08:52,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:08:52,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:08:52,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:08:52,805 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-29 08:08:58,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:08:58,328 INFO L93 Difference]: Finished difference Result 2090 states and 3102 transitions. [2020-10-29 08:08:58,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:08:58,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-10-29 08:08:58,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:08:58,340 INFO L225 Difference]: With dead ends: 2090 [2020-10-29 08:08:58,340 INFO L226 Difference]: Without dead ends: 1403 [2020-10-29 08:08:58,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:08:58,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2020-10-29 08:08:58,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1379. [2020-10-29 08:08:58,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2020-10-29 08:08:58,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1813 transitions. [2020-10-29 08:08:58,411 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1813 transitions. Word has length 112 [2020-10-29 08:08:58,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:08:58,411 INFO L481 AbstractCegarLoop]: Abstraction has 1379 states and 1813 transitions. [2020-10-29 08:08:58,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:08:58,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1813 transitions. [2020-10-29 08:08:58,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-29 08:08:58,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:08:58,421 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:08:58,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:08:58,421 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:08:58,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:08:58,422 INFO L82 PathProgramCache]: Analyzing trace with hash -451567342, now seen corresponding path program 1 times [2020-10-29 08:08:58,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:08:58,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707728491] [2020-10-29 08:08:58,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:08:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:08:58,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:58,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:58,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:08:59,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:00,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:00,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:02,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:02,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-29 08:09:02,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 08:09:02,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3889 [2020-10-29 08:09:02,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:02,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:02,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:09:02,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:09:02,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 08:09:02,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:09:02,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:09:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:02,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:02,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:02,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:09:02,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:02,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:09:02,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:02,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:02,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:09:02,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:02,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:09:02,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:09:02,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:09:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:02,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:02,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:02,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:02,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 08:09:02,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:09:02,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 08:09:02,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:02,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:02,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:09:02,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:02,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 08:09:02,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:02,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 08:09:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:02,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:02,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:02,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:09:02,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:02,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 08:09:02,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:02,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:02,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:09:02,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:09:02,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 08:09:02,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:09:03,178 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 08:09:03,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707728491] [2020-10-29 08:09:03,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:09:03,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:09:03,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000794441] [2020-10-29 08:09:03,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:09:03,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:09:03,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:09:03,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:09:03,186 INFO L87 Difference]: Start difference. First operand 1379 states and 1813 transitions. Second operand 8 states. [2020-10-29 08:09:08,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:09:08,755 INFO L93 Difference]: Finished difference Result 3469 states and 4721 transitions. [2020-10-29 08:09:08,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 08:09:08,756 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-10-29 08:09:08,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:09:08,769 INFO L225 Difference]: With dead ends: 3469 [2020-10-29 08:09:08,769 INFO L226 Difference]: Without dead ends: 2096 [2020-10-29 08:09:08,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:09:08,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2020-10-29 08:09:08,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 2083. [2020-10-29 08:09:08,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-10-29 08:09:08,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2688 transitions. [2020-10-29 08:09:08,848 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2688 transitions. Word has length 199 [2020-10-29 08:09:08,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:09:08,849 INFO L481 AbstractCegarLoop]: Abstraction has 2083 states and 2688 transitions. [2020-10-29 08:09:08,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:09:08,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2688 transitions. [2020-10-29 08:09:08,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-29 08:09:08,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:09:08,854 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:09:08,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:09:08,855 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:09:08,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:09:08,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1177853428, now seen corresponding path program 1 times [2020-10-29 08:09:08,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:09:08,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464142804] [2020-10-29 08:09:08,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:09:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:08,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:09,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:09,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:09,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:10,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:12,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:12,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-29 08:09:12,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:09:12,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3552 [2020-10-29 08:09:12,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:12,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:12,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 08:09:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:09:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-29 08:09:12,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:09:12,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:09:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:12,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:12,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:12,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:09:12,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:12,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:09:12,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:12,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:09:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:09:12,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:09:12,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:09:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:12,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:12,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:12,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:12,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 08:09:12,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:09:12,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-29 08:09:12,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:12,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:12,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:09:12,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:12,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 08:09:12,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:09:12,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 08:09:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:12,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:13,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:13,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:13,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 08:09:13,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:09:13,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-29 08:09:13,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:13,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:13,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:09:13,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:13,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 08:09:13,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 48 proven. 11 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 08:09:13,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464142804] [2020-10-29 08:09:13,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:09:13,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:09:13,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822435760] [2020-10-29 08:09:13,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:09:13,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:09:13,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:09:13,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:09:13,582 INFO L87 Difference]: Start difference. First operand 2083 states and 2688 transitions. Second operand 7 states. [2020-10-29 08:09:24,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:09:24,312 INFO L93 Difference]: Finished difference Result 5546 states and 7124 transitions. [2020-10-29 08:09:24,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 08:09:24,314 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-10-29 08:09:24,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:09:24,337 INFO L225 Difference]: With dead ends: 5546 [2020-10-29 08:09:24,337 INFO L226 Difference]: Without dead ends: 3469 [2020-10-29 08:09:24,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 08:09:24,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3469 states. [2020-10-29 08:09:24,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3469 to 3117. [2020-10-29 08:09:24,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3117 states. [2020-10-29 08:09:24,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 3970 transitions. [2020-10-29 08:09:24,472 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 3970 transitions. Word has length 262 [2020-10-29 08:09:24,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:09:24,473 INFO L481 AbstractCegarLoop]: Abstraction has 3117 states and 3970 transitions. [2020-10-29 08:09:24,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:09:24,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 3970 transitions. [2020-10-29 08:09:24,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-29 08:09:24,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:09:24,485 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-29 08:09:24,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:09:24,486 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:09:24,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:09:24,487 INFO L82 PathProgramCache]: Analyzing trace with hash -815140486, now seen corresponding path program 1 times [2020-10-29 08:09:24,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:09:24,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761444941] [2020-10-29 08:09:24,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:09:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:24,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:24,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:25,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:26,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:26,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:27,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:28,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:29,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:29,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-29 08:09:29,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 08:09:29,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 08:09:29,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:29,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:09:29,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-29 08:09:29,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-29 08:09:29,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:09:29,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:09:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:29,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:29,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:29,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:09:29,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:29,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 08:09:29,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:29,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:29,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:29,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:29,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:29,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:29,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:09:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:29,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:29,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:29,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 08:09:29,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:29,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 08:09:29,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:29,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:29,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:09:29,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:29,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 08:09:29,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:09:29,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 08:09:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:29,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:30,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:30,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:30,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 08:09:30,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:09:30,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-29 08:09:30,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:30,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:09:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:09:30,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-29 08:09:30,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:30,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-29 08:09:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:30,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:30,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:30,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:09:30,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:30,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 08:09:30,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:30,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:09:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:09:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 08:09:30,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:30,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-29 08:09:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:30,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:30,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:30,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:09:30,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:09:30,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:30,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:30,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:30,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 08:09:30,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:30,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:09:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 296 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-29 08:09:31,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761444941] [2020-10-29 08:09:31,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:09:31,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:09:31,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902335855] [2020-10-29 08:09:31,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:09:31,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:09:31,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:09:31,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:09:31,093 INFO L87 Difference]: Start difference. First operand 3117 states and 3970 transitions. Second operand 7 states. [2020-10-29 08:09:37,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:09:37,297 INFO L93 Difference]: Finished difference Result 7665 states and 10000 transitions. [2020-10-29 08:09:37,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:09:37,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 449 [2020-10-29 08:09:37,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:09:37,328 INFO L225 Difference]: With dead ends: 7665 [2020-10-29 08:09:37,328 INFO L226 Difference]: Without dead ends: 3833 [2020-10-29 08:09:37,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:09:37,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2020-10-29 08:09:37,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3809. [2020-10-29 08:09:37,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3809 states. [2020-10-29 08:09:37,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3809 states to 3809 states and 4169 transitions. [2020-10-29 08:09:37,458 INFO L78 Accepts]: Start accepts. Automaton has 3809 states and 4169 transitions. Word has length 449 [2020-10-29 08:09:37,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:09:37,459 INFO L481 AbstractCegarLoop]: Abstraction has 3809 states and 4169 transitions. [2020-10-29 08:09:37,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:09:37,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3809 states and 4169 transitions. [2020-10-29 08:09:37,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2020-10-29 08:09:37,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:09:37,475 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:09:37,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:09:37,475 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:09:37,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:09:37,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1587961492, now seen corresponding path program 1 times [2020-10-29 08:09:37,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:09:37,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471914158] [2020-10-29 08:09:37,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:09:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:37,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:37,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:37,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:42,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:42,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 582 [2020-10-29 08:09:42,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:09:42,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 08:09:42,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:42,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:09:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 241 [2020-10-29 08:09:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 08:09:42,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:42,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:09:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:42,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:42,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:42,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:09:42,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:42,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:09:42,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:42,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:42,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:42,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:42,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:09:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:42,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:42,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:42,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 08:09:42,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:42,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:09:42,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:42,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:42,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:42,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:42,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:42,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:42,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 08:09:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:42,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:42,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:42,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:09:42,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:42,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 08:09:42,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:42,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:42,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:09:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 08:09:42,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:43,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-29 08:09:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:43,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:43,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:43,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:09:43,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:43,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-29 08:09:43,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:43,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:09:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:09:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 08:09:43,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:09:43,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-29 08:09:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:43,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:43,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:43,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:09:43,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:43,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 08:09:43,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:43,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:43,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:09:43,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:43,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:09:43,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-29 08:09:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:43,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:43,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:43,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:09:43,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:43,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 08:09:43,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:43,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:43,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:43,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 08:09:43,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:43,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:43,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 370 proven. 178 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2020-10-29 08:09:43,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471914158] [2020-10-29 08:09:43,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:09:43,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:09:43,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132272648] [2020-10-29 08:09:43,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:09:43,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:09:43,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:09:43,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:09:43,736 INFO L87 Difference]: Start difference. First operand 3809 states and 4169 transitions. Second operand 7 states. [2020-10-29 08:09:48,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:09:48,365 INFO L93 Difference]: Finished difference Result 9346 states and 10373 transitions. [2020-10-29 08:09:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:09:48,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 562 [2020-10-29 08:09:48,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:09:48,393 INFO L225 Difference]: With dead ends: 9346 [2020-10-29 08:09:48,393 INFO L226 Difference]: Without dead ends: 5543 [2020-10-29 08:09:48,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:09:48,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5543 states. [2020-10-29 08:09:48,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5543 to 5516. [2020-10-29 08:09:48,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5516 states. [2020-10-29 08:09:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 5975 transitions. [2020-10-29 08:09:48,562 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 5975 transitions. Word has length 562 [2020-10-29 08:09:48,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:09:48,563 INFO L481 AbstractCegarLoop]: Abstraction has 5516 states and 5975 transitions. [2020-10-29 08:09:48,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:09:48,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 5975 transitions. [2020-10-29 08:09:48,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2020-10-29 08:09:48,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:09:48,590 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:09:48,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:09:48,591 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:09:48,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:09:48,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1047553464, now seen corresponding path program 1 times [2020-10-29 08:09:48,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:09:48,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100314867] [2020-10-29 08:09:48,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:09:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:48,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:49,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:49,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:49,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:50,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:53,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:53,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 700 [2020-10-29 08:09:53,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:09:53,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 08:09:53,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:53,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:09:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:09:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-29 08:09:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:53,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:09:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:53,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:53,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:53,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:09:53,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:53,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:09:53,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:53,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:09:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:09:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:09:53,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:53,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:09:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:54,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:54,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:54,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:09:54,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:54,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-29 08:09:54,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:54,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:54,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:09:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:09:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 08:09:54,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:54,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-29 08:09:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:54,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:54,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:54,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:09:54,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:54,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:09:54,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:54,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 08:09:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:54,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:54,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-29 08:09:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:54,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:54,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:54,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:09:54,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:54,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 08:09:54,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:54,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:54,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:54,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 08:09:54,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:54,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:54,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:09:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:54,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:54,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:54,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:09:54,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 08:09:54,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:54,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:09:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:54,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:54,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2020-10-29 08:09:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:54,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:54,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:09:54,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:09:54,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:09:54,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 08:09:54,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:09:54,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:09:54,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:09:54,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 08:09:54,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:09:54,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:09:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 140 proven. 375 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2020-10-29 08:09:55,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100314867] [2020-10-29 08:09:55,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:09:55,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:09:55,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421205354] [2020-10-29 08:09:55,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:09:55,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:09:55,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:09:55,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:09:55,317 INFO L87 Difference]: Start difference. First operand 5516 states and 5975 transitions. Second operand 7 states. [2020-10-29 08:09:59,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:09:59,105 INFO L93 Difference]: Finished difference Result 11749 states and 12738 transitions. [2020-10-29 08:09:59,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:09:59,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 680 [2020-10-29 08:09:59,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:09:59,135 INFO L225 Difference]: With dead ends: 11749 [2020-10-29 08:09:59,135 INFO L226 Difference]: Without dead ends: 6239 [2020-10-29 08:09:59,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:09:59,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6239 states. [2020-10-29 08:09:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6239 to 6199. [2020-10-29 08:09:59,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6199 states. [2020-10-29 08:09:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6199 states to 6199 states and 6690 transitions. [2020-10-29 08:09:59,322 INFO L78 Accepts]: Start accepts. Automaton has 6199 states and 6690 transitions. Word has length 680 [2020-10-29 08:09:59,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:09:59,323 INFO L481 AbstractCegarLoop]: Abstraction has 6199 states and 6690 transitions. [2020-10-29 08:09:59,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:09:59,323 INFO L276 IsEmpty]: Start isEmpty. Operand 6199 states and 6690 transitions. [2020-10-29 08:09:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2020-10-29 08:09:59,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:09:59,351 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:09:59,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:09:59,352 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:09:59,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:09:59,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1170424456, now seen corresponding path program 1 times [2020-10-29 08:09:59,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:09:59,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909379683] [2020-10-29 08:09:59,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:09:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:09:59,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:09:59,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:00,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:03,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:04,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:04,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 784 [2020-10-29 08:10:04,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:10:04,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 08:10:04,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:04,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:10:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-29 08:10:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 08:10:04,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:04,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:10:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:04,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:04,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:04,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:10:04,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:04,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:10:04,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:04,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:04,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:04,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:10:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:04,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:04,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:04,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:10:04,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:04,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 08:10:04,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:04,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:10:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-29 08:10:04,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:04,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:10:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:04,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:05,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:05,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 08:10:05,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:05,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-29 08:10:05,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:05,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:10:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:10:05,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 08:10:05,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:05,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-29 08:10:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:05,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:05,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:05,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:10:05,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:05,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 08:10:05,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:05,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 08:10:05,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:05,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:05,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-10-29 08:10:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:05,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:05,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:05,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:10:05,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:05,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 08:10:05,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:05,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:05,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:05,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:10:05,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:05,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:05,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2020-10-29 08:10:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:05,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:05,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:05,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:10:05,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:05,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:10:05,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:05,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:05,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:05,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 08:10:05,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:05,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:05,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 312 proven. 319 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-10-29 08:10:05,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909379683] [2020-10-29 08:10:05,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:10:05,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:10:05,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515539676] [2020-10-29 08:10:05,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:10:05,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:10:05,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:10:05,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:10:05,893 INFO L87 Difference]: Start difference. First operand 6199 states and 6690 transitions. Second operand 7 states. [2020-10-29 08:10:10,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:10:10,113 INFO L93 Difference]: Finished difference Result 13778 states and 15075 transitions. [2020-10-29 08:10:10,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:10:10,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 764 [2020-10-29 08:10:10,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:10:10,157 INFO L225 Difference]: With dead ends: 13778 [2020-10-29 08:10:10,157 INFO L226 Difference]: Without dead ends: 7922 [2020-10-29 08:10:10,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:10:10,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7922 states. [2020-10-29 08:10:10,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7922 to 7565. [2020-10-29 08:10:10,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7565 states. [2020-10-29 08:10:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7565 states to 7565 states and 8112 transitions. [2020-10-29 08:10:10,359 INFO L78 Accepts]: Start accepts. Automaton has 7565 states and 8112 transitions. Word has length 764 [2020-10-29 08:10:10,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:10:10,360 INFO L481 AbstractCegarLoop]: Abstraction has 7565 states and 8112 transitions. [2020-10-29 08:10:10,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:10:10,360 INFO L276 IsEmpty]: Start isEmpty. Operand 7565 states and 8112 transitions. [2020-10-29 08:10:10,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1293 [2020-10-29 08:10:10,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:10:10,397 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:10:10,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:10:10,397 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:10:10,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:10:10,398 INFO L82 PathProgramCache]: Analyzing trace with hash 299695916, now seen corresponding path program 1 times [2020-10-29 08:10:10,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:10:10,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254513745] [2020-10-29 08:10:10,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:10:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:10,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:11,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:11,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:11,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:12,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:15,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:15,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1318 [2020-10-29 08:10:15,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:10:15,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 08:10:15,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:15,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:10:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:10:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-29 08:10:15,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:15,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:10:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:15,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:15,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:15,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:10:15,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:15,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:10:15,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:15,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:10:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:10:15,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:15,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:10:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:16,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:16,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:16,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:16,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:10:16,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:10:16,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-29 08:10:16,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:16,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:10:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-29 08:10:16,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:16,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:10:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:16,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:16,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:16,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:10:16,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:16,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 08:10:16,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:16,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:16,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:10:16,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:10:16,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 08:10:16,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:17,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-29 08:10:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:17,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:17,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:10:17,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:17,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 08:10:17,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:17,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 08:10:17,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:17,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:17,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-29 08:10:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:17,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:17,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:17,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:10:17,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:17,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 08:10:17,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:17,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:17,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:17,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 08:10:17,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:17,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:17,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-29 08:10:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:17,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:17,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:17,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:10:17,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:17,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 08:10:17,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:17,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:17,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 08:10:17,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:17,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:17,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-29 08:10:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:17,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:17,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:17,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:10:17,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:17,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 08:10:17,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:17,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:10:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:17,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:17,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 969 [2020-10-29 08:10:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:17,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:17,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:17,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-29 08:10:17,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:17,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 08:10:17,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:17,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-29 08:10:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:17,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:17,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:10:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:17,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:17,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:17,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 08:10:17,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:17,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:10:17,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:17,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:17,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:17,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:10:19,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2903 backedges. 457 proven. 701 refuted. 0 times theorem prover too weak. 1745 trivial. 0 not checked. [2020-10-29 08:10:19,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254513745] [2020-10-29 08:10:19,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:10:19,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:10:19,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188359834] [2020-10-29 08:10:19,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:10:19,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:10:19,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:10:19,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:10:19,538 INFO L87 Difference]: Start difference. First operand 7565 states and 8112 transitions. Second operand 7 states. [2020-10-29 08:10:22,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:10:22,906 INFO L93 Difference]: Finished difference Result 14800 states and 15894 transitions. [2020-10-29 08:10:22,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 08:10:22,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1292 [2020-10-29 08:10:22,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:10:22,926 INFO L225 Difference]: With dead ends: 14800 [2020-10-29 08:10:22,926 INFO L226 Difference]: Without dead ends: 7580 [2020-10-29 08:10:22,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:10:22,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7580 states. [2020-10-29 08:10:23,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7580 to 7570. [2020-10-29 08:10:23,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7570 states. [2020-10-29 08:10:23,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 8115 transitions. [2020-10-29 08:10:23,116 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 8115 transitions. Word has length 1292 [2020-10-29 08:10:23,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:10:23,118 INFO L481 AbstractCegarLoop]: Abstraction has 7570 states and 8115 transitions. [2020-10-29 08:10:23,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:10:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 8115 transitions. [2020-10-29 08:10:23,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1327 [2020-10-29 08:10:23,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:10:23,152 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:10:23,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:10:23,153 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:10:23,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:10:23,154 INFO L82 PathProgramCache]: Analyzing trace with hash -660364296, now seen corresponding path program 1 times [2020-10-29 08:10:23,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:10:23,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201792692] [2020-10-29 08:10:23,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:10:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:23,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:23,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:24,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:24,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:26,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:28,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:28,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1354 [2020-10-29 08:10:28,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:10:28,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 08:10:28,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:28,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:10:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1017 [2020-10-29 08:10:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-29 08:10:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:28,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:10:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:28,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:28,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:28,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:10:28,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:28,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:10:28,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:28,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:28,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:28,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:10:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:28,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:28,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:28,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:10:28,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:28,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:10:28,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:28,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:28,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:28,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:28,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:10:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:28,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:29,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:29,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:10:29,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:29,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:10:29,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:29,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:29,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:29,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:29,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:29,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:29,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 08:10:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:29,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:29,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:29,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:10:29,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:29,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 08:10:29,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:29,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:29,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:29,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:29,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:29,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:10:29,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 08:10:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:29,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:29,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:29,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:10:29,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:29,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:10:29,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:29,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:29,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:29,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:29,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-29 08:10:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:29,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:29,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:29,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:10:29,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:29,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:10:29,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:29,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:29,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:29,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:29,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:29,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:29,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-10-29 08:10:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:29,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:29,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:29,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:10:29,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:29,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 08:10:29,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:29,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:29,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:10:29,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 893 [2020-10-29 08:10:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:29,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:29,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:29,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:10:29,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:29,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 08:10:29,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:29,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:10:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 08:10:29,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:29,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1003 [2020-10-29 08:10:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:29,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:30,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:30,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-29 08:10:30,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:30,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-29 08:10:30,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:30,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:30,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:10:30,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:10:30,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 298 [2020-10-29 08:10:30,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:30,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:10:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:30,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:30,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:30,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 08:10:30,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:30,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:10:30,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:30,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:10:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:10:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 08:10:30,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3575 backedges. 1228 proven. 2 refuted. 0 times theorem prover too weak. 2345 trivial. 0 not checked. [2020-10-29 08:10:31,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201792692] [2020-10-29 08:10:31,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:10:31,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:10:31,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021006183] [2020-10-29 08:10:31,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:10:31,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:10:31,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:10:31,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:10:31,567 INFO L87 Difference]: Start difference. First operand 7570 states and 8115 transitions. Second operand 8 states. [2020-10-29 08:10:37,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:10:37,334 INFO L93 Difference]: Finished difference Result 15826 states and 17004 transitions. [2020-10-29 08:10:37,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 08:10:37,335 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1326 [2020-10-29 08:10:37,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:10:37,360 INFO L225 Difference]: With dead ends: 15826 [2020-10-29 08:10:37,360 INFO L226 Difference]: Without dead ends: 8254 [2020-10-29 08:10:37,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-29 08:10:37,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8254 states. [2020-10-29 08:10:37,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8254 to 7905. [2020-10-29 08:10:37,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7905 states. [2020-10-29 08:10:37,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7905 states to 7905 states and 8458 transitions. [2020-10-29 08:10:37,533 INFO L78 Accepts]: Start accepts. Automaton has 7905 states and 8458 transitions. Word has length 1326 [2020-10-29 08:10:37,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:10:37,536 INFO L481 AbstractCegarLoop]: Abstraction has 7905 states and 8458 transitions. [2020-10-29 08:10:37,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:10:37,536 INFO L276 IsEmpty]: Start isEmpty. Operand 7905 states and 8458 transitions. [2020-10-29 08:10:37,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1403 [2020-10-29 08:10:37,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:10:37,569 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-29 08:10:37,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:10:37,570 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:10:37,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:10:37,571 INFO L82 PathProgramCache]: Analyzing trace with hash -633421920, now seen corresponding path program 1 times [2020-10-29 08:10:37,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:10:37,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092565184] [2020-10-29 08:10:37,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:10:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:37,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:38,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:38,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:42,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:42,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1426 [2020-10-29 08:10:42,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:10:42,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 08:10:42,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:42,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:10:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 741 [2020-10-29 08:10:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-29 08:10:42,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:43,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:10:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:43,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:43,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:43,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:10:43,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:43,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:10:43,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:43,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:43,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:43,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:10:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:43,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:43,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:43,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:10:43,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:43,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 08:10:43,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:43,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:43,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:43,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:43,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:43,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:43,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:10:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:43,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:43,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:43,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:10:43,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:43,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 08:10:43,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:43,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:43,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:43,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:43,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:43,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:43,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 08:10:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:43,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:43,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:43,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:10:43,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:43,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 08:10:43,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:43,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:43,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:43,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 08:10:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:43,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:43,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:43,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:10:43,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:43,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 08:10:43,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:43,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:43,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:10:43,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:43,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 08:10:43,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:43,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-29 08:10:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:43,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:44,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:44,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:10:44,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:44,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-29 08:10:44,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:44,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:44,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:10:44,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:10:44,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-29 08:10:44,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:44,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-29 08:10:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:44,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:44,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:44,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-29 08:10:44,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:44,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 08:10:44,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:44,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:44,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:44,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-29 08:10:44,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:44,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:44,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1258 [2020-10-29 08:10:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:44,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:44,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:44,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 08:10:44,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:44,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 08:10:44,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:44,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:44,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:44,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-29 08:10:44,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:44,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3500 backedges. 956 proven. 364 refuted. 0 times theorem prover too weak. 2180 trivial. 0 not checked. [2020-10-29 08:10:46,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092565184] [2020-10-29 08:10:46,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:10:46,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:10:46,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556296099] [2020-10-29 08:10:46,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:10:46,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:10:46,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:10:46,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:10:46,159 INFO L87 Difference]: Start difference. First operand 7905 states and 8458 transitions. Second operand 7 states. [2020-10-29 08:10:50,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:10:50,310 INFO L93 Difference]: Finished difference Result 15481 states and 16592 transitions. [2020-10-29 08:10:50,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:10:50,314 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1402 [2020-10-29 08:10:50,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:10:50,340 INFO L225 Difference]: With dead ends: 15481 [2020-10-29 08:10:50,341 INFO L226 Difference]: Without dead ends: 7921 [2020-10-29 08:10:50,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:10:50,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7921 states. [2020-10-29 08:10:50,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7921 to 7907. [2020-10-29 08:10:50,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7907 states. [2020-10-29 08:10:50,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7907 states to 7907 states and 8456 transitions. [2020-10-29 08:10:50,513 INFO L78 Accepts]: Start accepts. Automaton has 7907 states and 8456 transitions. Word has length 1402 [2020-10-29 08:10:50,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:10:50,515 INFO L481 AbstractCegarLoop]: Abstraction has 7907 states and 8456 transitions. [2020-10-29 08:10:50,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:10:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand 7907 states and 8456 transitions. [2020-10-29 08:10:50,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1563 [2020-10-29 08:10:50,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:10:50,552 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:10:50,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 08:10:50,552 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:10:50,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:10:50,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1629229008, now seen corresponding path program 1 times [2020-10-29 08:10:50,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:10:50,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502695580] [2020-10-29 08:10:50,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:10:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:51,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:51,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:51,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:52,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:52,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:56,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:56,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1590 [2020-10-29 08:10:56,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:10:56,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-29 08:10:56,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:56,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:56,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:10:56,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1180 [2020-10-29 08:10:56,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-29 08:10:56,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:56,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:10:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:56,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:56,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:56,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:10:56,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:56,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:10:56,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:56,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:56,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:56,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:10:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:56,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:56,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:56,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:10:56,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:56,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 08:10:56,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:56,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:56,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:56,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:56,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:56,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:10:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:56,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:56,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:56,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:10:56,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:56,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 08:10:56,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:56,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:56,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:56,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:56,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:56,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 08:10:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:56,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:56,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:56,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:10:56,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:56,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 08:10:56,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:56,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:56,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:56,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 08:10:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:56,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:56,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:56,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:10:56,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:56,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:10:56,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:56,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:56,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:56,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:56,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-29 08:10:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:56,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:56,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:56,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:10:56,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:56,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 08:10:56,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:56,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:56,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:56,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:56,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:56,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:56,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-10-29 08:10:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:56,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:56,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:56,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:10:56,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:56,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 08:10:56,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:56,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:56,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:56,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:56,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 893 [2020-10-29 08:10:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:56,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:57,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:57,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:10:57,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:57,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 08:10:57,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:57,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:57,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:10:57,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:10:57,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-29 08:10:57,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:10:57,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1166 [2020-10-29 08:10:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:57,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:57,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:57,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-29 08:10:57,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:57,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 08:10:57,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:57,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:10:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:10:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-29 08:10:57,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:57,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1418 [2020-10-29 08:10:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:10:57,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:10:57,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:10:57,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 08:10:57,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:10:57,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 08:10:57,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:10:57,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:10:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:10:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-29 08:10:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:10:57,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:10:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4892 backedges. 1426 proven. 115 refuted. 0 times theorem prover too weak. 3351 trivial. 0 not checked. [2020-10-29 08:10:58,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502695580] [2020-10-29 08:10:58,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:10:58,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:10:58,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045647404] [2020-10-29 08:10:58,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:10:58,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:10:58,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:10:58,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:10:58,897 INFO L87 Difference]: Start difference. First operand 7907 states and 8456 transitions. Second operand 7 states. [2020-10-29 08:11:03,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:11:03,290 INFO L93 Difference]: Finished difference Result 15838 states and 17003 transitions. [2020-10-29 08:11:03,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:11:03,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1562 [2020-10-29 08:11:03,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:11:03,316 INFO L225 Difference]: With dead ends: 15838 [2020-10-29 08:11:03,317 INFO L226 Difference]: Without dead ends: 7589 [2020-10-29 08:11:03,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:11:03,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7589 states. [2020-10-29 08:11:03,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7589 to 7561. [2020-10-29 08:11:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7561 states. [2020-10-29 08:11:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7561 states to 7561 states and 7898 transitions. [2020-10-29 08:11:03,475 INFO L78 Accepts]: Start accepts. Automaton has 7561 states and 7898 transitions. Word has length 1562 [2020-10-29 08:11:03,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:11:03,477 INFO L481 AbstractCegarLoop]: Abstraction has 7561 states and 7898 transitions. [2020-10-29 08:11:03,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:11:03,477 INFO L276 IsEmpty]: Start isEmpty. Operand 7561 states and 7898 transitions. [2020-10-29 08:11:03,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1636 [2020-10-29 08:11:03,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:11:03,515 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:11:03,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 08:11:03,515 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:11:03,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:11:03,516 INFO L82 PathProgramCache]: Analyzing trace with hash 2135263362, now seen corresponding path program 1 times [2020-10-29 08:11:03,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:11:03,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254391717] [2020-10-29 08:11:03,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:11:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:04,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:04,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:04,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:04,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:05,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:08,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:08,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1665 [2020-10-29 08:11:08,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:11:08,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 08:11:08,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:08,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:08,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:11:08,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 905 [2020-10-29 08:11:08,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-29 08:11:08,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:09,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:11:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:09,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:09,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:09,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:11:09,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:09,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:11:09,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:09,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:09,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:09,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:09,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:09,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:09,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:11:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:09,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:09,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:09,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:11:09,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:09,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:11:09,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:09,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:09,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:09,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:09,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:09,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:09,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:11:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:09,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:09,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:09,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:11:09,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:09,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 08:11:09,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:09,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:09,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:09,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 08:11:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:09,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:09,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:09,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:11:09,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:09,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:11:09,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:09,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:09,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:09,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 08:11:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:09,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:09,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:09,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:11:09,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:09,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:11:09,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:09,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:09,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:09,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:09,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:09,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:09,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-29 08:11:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:09,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:09,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:09,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:11:09,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:09,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 08:11:09,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:09,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:09,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:09,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-10-29 08:11:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:09,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:09,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:09,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:11:09,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:09,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 08:11:09,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:09,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:09,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:11:09,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:09,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 08:11:09,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:09,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 893 [2020-10-29 08:11:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:09,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:09,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:09,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:11:09,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:09,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-29 08:11:09,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:09,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:09,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:11:09,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:11:09,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-29 08:11:09,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:10,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1166 [2020-10-29 08:11:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:10,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:10,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:10,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:11:10,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:10,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:11:10,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:10,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:11:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:10,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:10,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1237 [2020-10-29 08:11:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:10,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:10,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:10,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-29 08:11:10,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:10,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 08:11:10,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:10,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:10,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:10,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-29 08:11:10,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:10,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:10,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1491 [2020-10-29 08:11:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:10,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:10,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:10,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 08:11:10,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:10,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 08:11:10,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:10,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:10,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:10,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-29 08:11:10,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:10,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5559 backedges. 1244 proven. 434 refuted. 0 times theorem prover too weak. 3881 trivial. 0 not checked. [2020-10-29 08:11:11,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254391717] [2020-10-29 08:11:11,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:11:11,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:11:11,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146594589] [2020-10-29 08:11:11,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:11:11,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:11:11,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:11:11,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:11:11,844 INFO L87 Difference]: Start difference. First operand 7561 states and 7898 transitions. Second operand 7 states. [2020-10-29 08:11:17,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:11:17,526 INFO L93 Difference]: Finished difference Result 15469 states and 16183 transitions. [2020-10-29 08:11:17,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:11:17,532 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1635 [2020-10-29 08:11:17,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:11:17,556 INFO L225 Difference]: With dead ends: 15469 [2020-10-29 08:11:17,556 INFO L226 Difference]: Without dead ends: 8253 [2020-10-29 08:11:17,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:11:17,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8253 states. [2020-10-29 08:11:17,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8253 to 7904. [2020-10-29 08:11:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7904 states. [2020-10-29 08:11:17,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7904 states to 7904 states and 8249 transitions. [2020-10-29 08:11:17,709 INFO L78 Accepts]: Start accepts. Automaton has 7904 states and 8249 transitions. Word has length 1635 [2020-10-29 08:11:17,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:11:17,711 INFO L481 AbstractCegarLoop]: Abstraction has 7904 states and 8249 transitions. [2020-10-29 08:11:17,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:11:17,712 INFO L276 IsEmpty]: Start isEmpty. Operand 7904 states and 8249 transitions. [2020-10-29 08:11:17,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1653 [2020-10-29 08:11:17,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:11:17,753 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:11:17,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 08:11:17,754 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:11:17,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:11:17,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1620535344, now seen corresponding path program 1 times [2020-10-29 08:11:17,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:11:17,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351977740] [2020-10-29 08:11:17,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:11:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:18,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:18,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:18,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:18,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:21,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:23,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:23,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1682 [2020-10-29 08:11:23,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:11:23,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-29 08:11:23,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:23,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:11:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 922 [2020-10-29 08:11:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-29 08:11:23,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:23,469 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 08:11:23,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:11:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:23,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:23,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:23,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:11:23,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:23,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:11:23,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:23,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:23,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:23,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:11:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:23,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:23,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:23,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:11:23,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:23,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 08:11:23,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:23,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:23,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:23,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:23,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:23,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:23,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:11:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:23,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:23,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:23,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:11:23,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:23,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:11:23,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:23,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:23,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:23,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 08:11:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:23,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:23,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:23,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:11:23,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:11:23,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:23,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:23,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:23,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:23,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:23,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:23,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 08:11:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:23,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:23,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:23,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:11:23,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:23,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 08:11:23,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:23,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:23,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:23,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:23,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:23,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:23,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-29 08:11:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:23,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:23,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:23,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:11:23,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:23,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 08:11:23,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:23,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:23,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:23,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:23,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2020-10-29 08:11:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:23,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:23,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:23,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 08:11:23,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:23,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 08:11:23,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:23,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:23,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:11:23,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:23,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-29 08:11:23,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:23,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 910 [2020-10-29 08:11:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:24,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:24,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:24,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:11:24,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:24,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-29 08:11:24,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:24,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:24,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:11:24,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:11:24,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-29 08:11:24,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:24,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1183 [2020-10-29 08:11:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:24,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:24,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:24,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:11:24,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:24,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 08:11:24,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:24,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:24,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:24,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:11:24,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:24,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:24,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1254 [2020-10-29 08:11:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:24,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:24,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:24,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-29 08:11:24,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:24,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 08:11:24,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:24,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:24,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:24,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-29 08:11:24,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:24,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:24,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1508 [2020-10-29 08:11:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:24,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:24,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:24,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 08:11:24,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:24,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 08:11:24,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:24,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:24,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-29 08:11:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:24,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:11:26,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5559 backedges. 1261 proven. 434 refuted. 0 times theorem prover too weak. 3864 trivial. 0 not checked. [2020-10-29 08:11:26,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351977740] [2020-10-29 08:11:26,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:11:26,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:11:26,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916089606] [2020-10-29 08:11:26,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:11:26,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:11:26,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:11:26,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:11:26,260 INFO L87 Difference]: Start difference. First operand 7904 states and 8249 transitions. Second operand 7 states. [2020-10-29 08:11:30,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:11:30,842 INFO L93 Difference]: Finished difference Result 18539 states and 19526 transitions. [2020-10-29 08:11:30,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:11:30,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1652 [2020-10-29 08:11:30,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:11:30,880 INFO L225 Difference]: With dead ends: 18539 [2020-10-29 08:11:30,880 INFO L226 Difference]: Without dead ends: 10980 [2020-10-29 08:11:30,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:11:30,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10980 states. [2020-10-29 08:11:31,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10980 to 10630. [2020-10-29 08:11:31,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10630 states. [2020-10-29 08:11:31,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10630 states to 10630 states and 11195 transitions. [2020-10-29 08:11:31,071 INFO L78 Accepts]: Start accepts. Automaton has 10630 states and 11195 transitions. Word has length 1652 [2020-10-29 08:11:31,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:11:31,072 INFO L481 AbstractCegarLoop]: Abstraction has 10630 states and 11195 transitions. [2020-10-29 08:11:31,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:11:31,073 INFO L276 IsEmpty]: Start isEmpty. Operand 10630 states and 11195 transitions. [2020-10-29 08:11:31,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1681 [2020-10-29 08:11:31,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:11:31,111 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:11:31,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 08:11:31,111 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:11:31,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:11:31,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1397228912, now seen corresponding path program 1 times [2020-10-29 08:11:31,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:11:31,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44699840] [2020-10-29 08:11:31,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:11:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:31,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:31,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:32,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:32,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:33,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:34,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:36,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:36,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1712 [2020-10-29 08:11:36,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 08:11:36,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-29 08:11:36,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:36,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:11:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 922 [2020-10-29 08:11:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-29 08:11:36,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:36,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:11:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:36,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:36,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:36,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:11:36,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:36,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:11:36,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:36,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:36,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:36,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:11:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:36,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:36,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:36,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:11:36,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:36,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:11:36,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:36,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:36,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:37,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:11:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:37,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:37,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:11:37,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:37,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 08:11:37,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:37,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:37,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:37,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:37,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 08:11:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:37,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:37,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:37,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:11:37,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:37,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:11:37,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:37,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:37,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:37,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:37,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:37,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:37,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 08:11:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:37,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:37,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:11:37,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:37,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:11:37,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:37,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:37,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:37,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:37,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:37,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:37,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-29 08:11:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:37,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:37,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:37,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:11:37,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:37,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:11:37,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:37,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:37,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:37,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:37,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:37,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2020-10-29 08:11:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:37,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:37,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:37,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 08:11:37,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:37,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 08:11:37,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:37,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:37,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:11:37,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:37,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-29 08:11:37,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:37,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 910 [2020-10-29 08:11:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:37,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:37,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:37,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-29 08:11:37,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:37,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-29 08:11:37,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:37,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:37,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:11:37,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:11:37,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-29 08:11:37,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:37,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:11:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:37,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:37,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:37,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 08:11:37,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:37,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:11:37,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:37,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:37,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:11:37,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:11:37,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:11:37,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:38,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1211 [2020-10-29 08:11:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:38,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:38,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:38,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:11:38,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:38,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:11:38,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:38,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:11:38,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:38,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:38,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1282 [2020-10-29 08:11:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:38,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:38,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:38,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-29 08:11:38,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:38,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 08:11:38,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:38,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:38,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-29 08:11:38,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:38,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:38,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1536 [2020-10-29 08:11:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:38,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:38,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:38,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 08:11:38,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:38,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:11:38,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:38,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-29 08:11:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:38,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 5559 backedges. 1261 proven. 434 refuted. 0 times theorem prover too weak. 3864 trivial. 0 not checked. [2020-10-29 08:11:39,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44699840] [2020-10-29 08:11:39,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:11:39,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:11:39,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735437758] [2020-10-29 08:11:39,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:11:39,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:11:39,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:11:39,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:11:39,711 INFO L87 Difference]: Start difference. First operand 10630 states and 11195 transitions. Second operand 8 states. [2020-10-29 08:11:44,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:11:44,959 INFO L93 Difference]: Finished difference Result 26021 states and 27524 transitions. [2020-10-29 08:11:44,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:11:44,961 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1680 [2020-10-29 08:11:44,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:11:45,005 INFO L225 Difference]: With dead ends: 26021 [2020-10-29 08:11:45,005 INFO L226 Difference]: Without dead ends: 15736 [2020-10-29 08:11:45,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-29 08:11:45,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15736 states. [2020-10-29 08:11:45,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15736 to 14712. [2020-10-29 08:11:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14712 states. [2020-10-29 08:11:45,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14712 states to 14712 states and 15546 transitions. [2020-10-29 08:11:45,322 INFO L78 Accepts]: Start accepts. Automaton has 14712 states and 15546 transitions. Word has length 1680 [2020-10-29 08:11:45,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:11:45,323 INFO L481 AbstractCegarLoop]: Abstraction has 14712 states and 15546 transitions. [2020-10-29 08:11:45,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:11:45,324 INFO L276 IsEmpty]: Start isEmpty. Operand 14712 states and 15546 transitions. [2020-10-29 08:11:45,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1687 [2020-10-29 08:11:45,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:11:45,366 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:11:45,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 08:11:45,367 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:11:45,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:11:45,368 INFO L82 PathProgramCache]: Analyzing trace with hash 41090132, now seen corresponding path program 1 times [2020-10-29 08:11:45,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:11:45,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328601496] [2020-10-29 08:11:45,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:11:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:45,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:46,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:46,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:47,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:50,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:50,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1716 [2020-10-29 08:11:50,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:11:50,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-29 08:11:50,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:50,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:50,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:11:50,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1018 [2020-10-29 08:11:50,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-29 08:11:50,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:50,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:11:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:50,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:50,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:50,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:11:50,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:50,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:11:50,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:50,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:50,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:50,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:11:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:50,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:51,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:51,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:11:51,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:51,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:11:51,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:51,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:51,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:51,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:51,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:51,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:51,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:11:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:51,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:51,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:51,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:11:51,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:51,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 08:11:51,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:51,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:51,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:51,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:51,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 08:11:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:51,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:51,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:51,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:11:51,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:51,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 08:11:51,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:51,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:51,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:51,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:51,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:51,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:51,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 08:11:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:51,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:51,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:51,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:11:51,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:51,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:11:51,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:51,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:51,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:51,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-29 08:11:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:51,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:51,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:51,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:11:51,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:51,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 08:11:51,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:51,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:51,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:51,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 752 [2020-10-29 08:11:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:51,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:51,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:51,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:11:51,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:51,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 08:11:51,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:51,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:51,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:51,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:51,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:51,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 894 [2020-10-29 08:11:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:51,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:51,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:51,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:11:51,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:51,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 08:11:51,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:51,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:11:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 08:11:51,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:51,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1004 [2020-10-29 08:11:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:51,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:51,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:51,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-29 08:11:51,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:51,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-29 08:11:51,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:51,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:11:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:11:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-29 08:11:51,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:52,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1288 [2020-10-29 08:11:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:52,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:52,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:52,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-29 08:11:52,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:52,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 08:11:52,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:52,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:52,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:52,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-29 08:11:52,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:52,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:52,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1542 [2020-10-29 08:11:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:52,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:52,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:52,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 08:11:52,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:52,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:11:52,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:52,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:52,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:11:52,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-29 08:11:52,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:11:52,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:53,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5880 backedges. 1341 proven. 366 refuted. 0 times theorem prover too weak. 4173 trivial. 0 not checked. [2020-10-29 08:11:53,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328601496] [2020-10-29 08:11:53,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:11:53,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:11:53,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847916945] [2020-10-29 08:11:53,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:11:53,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:11:53,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:11:53,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:11:53,644 INFO L87 Difference]: Start difference. First operand 14712 states and 15546 transitions. Second operand 7 states. [2020-10-29 08:11:57,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:11:57,925 INFO L93 Difference]: Finished difference Result 33146 states and 35114 transitions. [2020-10-29 08:11:57,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:11:57,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1686 [2020-10-29 08:11:57,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:11:57,980 INFO L225 Difference]: With dead ends: 33146 [2020-10-29 08:11:57,980 INFO L226 Difference]: Without dead ends: 18779 [2020-10-29 08:11:58,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:11:58,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18779 states. [2020-10-29 08:11:58,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18779 to 16746. [2020-10-29 08:11:58,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16746 states. [2020-10-29 08:11:58,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16746 states to 16746 states and 17637 transitions. [2020-10-29 08:11:58,348 INFO L78 Accepts]: Start accepts. Automaton has 16746 states and 17637 transitions. Word has length 1686 [2020-10-29 08:11:58,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:11:58,350 INFO L481 AbstractCegarLoop]: Abstraction has 16746 states and 17637 transitions. [2020-10-29 08:11:58,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:11:58,350 INFO L276 IsEmpty]: Start isEmpty. Operand 16746 states and 17637 transitions. [2020-10-29 08:11:58,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1727 [2020-10-29 08:11:58,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:11:58,394 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:11:58,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 08:11:58,395 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:11:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:11:58,395 INFO L82 PathProgramCache]: Analyzing trace with hash -326287108, now seen corresponding path program 1 times [2020-10-29 08:11:58,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:11:58,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054419388] [2020-10-29 08:11:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:11:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:58,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:59,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:59,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:59,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:02,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:02,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:03,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:03,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1756 [2020-10-29 08:12:03,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 08:12:03,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-29 08:12:03,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:03,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:03,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:12:03,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 732 [2020-10-29 08:12:03,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-29 08:12:03,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:04,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:12:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:04,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:04,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:04,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:12:04,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:04,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:12:04,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:04,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:04,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:12:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:12:04,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:04,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:12:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:04,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:04,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:04,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:12:04,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:04,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 08:12:04,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:04,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:12:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:12:04,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:04,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:12:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:04,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:04,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:04,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:12:04,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:04,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 08:12:04,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:04,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:04,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:12:04,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:04,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:12:04,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:04,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 08:12:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:04,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:04,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:04,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:12:04,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 08:12:04,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:04,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:12:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:12:04,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:04,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 08:12:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:04,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:04,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:04,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:12:04,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:04,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:12:04,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:04,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:04,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:12:04,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:04,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:12:04,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:04,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607