/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:03:37,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:03:37,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:03:37,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:03:37,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:03:37,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:03:37,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:03:37,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:03:37,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:03:37,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:03:37,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:03:37,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:03:37,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:03:37,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:03:37,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:03:37,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:03:37,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:03:37,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:03:37,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:03:37,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:03:37,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:03:37,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:03:37,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:03:37,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:03:37,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:03:37,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:03:37,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:03:37,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:03:37,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:03:37,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:03:37,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:03:37,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:03:37,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:03:37,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:03:37,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:03:37,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:03:37,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:03:37,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:03:37,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:03:37,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:03:37,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:03:37,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 00:03:37,964 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:03:37,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:03:37,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:03:37,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:03:37,969 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:03:37,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:03:37,970 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:03:37,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:03:37,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:03:37,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:03:37,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:03:37,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:03:37,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:03:37,972 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:03:37,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:03:37,972 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:03:37,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:03:37,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:03:37,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:03:37,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:03:37,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:03:37,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:03:37,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:03:37,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:03:37,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:03:37,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:03:37,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:03:37,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:03:37,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:03:37,975 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:03:38,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:03:38,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:03:38,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:03:38,405 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:03:38,405 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:03:38,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label55.c [2020-10-27 00:03:38,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d50f06f88/9a8f83e76394451c97af2ec94df040cc/FLAGb6b0d9384 [2020-10-27 00:03:39,492 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:03:39,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label55.c [2020-10-27 00:03:39,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d50f06f88/9a8f83e76394451c97af2ec94df040cc/FLAGb6b0d9384 [2020-10-27 00:03:39,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d50f06f88/9a8f83e76394451c97af2ec94df040cc [2020-10-27 00:03:39,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:03:39,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:03:39,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:03:39,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:03:39,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:03:39,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:03:39" (1/1) ... [2020-10-27 00:03:39,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bfc485d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:39, skipping insertion in model container [2020-10-27 00:03:39,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:03:39" (1/1) ... [2020-10-27 00:03:39,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:03:39,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:03:40,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:03:40,630 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:03:40,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:03:40,964 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:03:40,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:40 WrapperNode [2020-10-27 00:03:40,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:03:40,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:03:40,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:03:40,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:03:40,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:40" (1/1) ... [2020-10-27 00:03:40,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:40" (1/1) ... [2020-10-27 00:03:41,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:40" (1/1) ... [2020-10-27 00:03:41,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:40" (1/1) ... [2020-10-27 00:03:41,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:40" (1/1) ... [2020-10-27 00:03:41,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:40" (1/1) ... [2020-10-27 00:03:41,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:40" (1/1) ... [2020-10-27 00:03:41,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:03:41,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:03:41,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:03:41,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:03:41,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:03:41,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:03:41,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:03:41,290 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:03:41,290 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:03:41,291 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:03:41,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:03:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:03:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:03:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:03:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:03:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:03:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:03:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:03:41,294 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:03:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:03:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:03:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:03:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:03:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:03:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:03:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:03:44,117 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:03:44,117 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:03:44,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:03:44 BoogieIcfgContainer [2020-10-27 00:03:44,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:03:44,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:03:44,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:03:44,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:03:44,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:03:39" (1/3) ... [2020-10-27 00:03:44,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b88e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:03:44, skipping insertion in model container [2020-10-27 00:03:44,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:40" (2/3) ... [2020-10-27 00:03:44,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b88e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:03:44, skipping insertion in model container [2020-10-27 00:03:44,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:03:44" (3/3) ... [2020-10-27 00:03:44,129 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label55.c [2020-10-27 00:03:44,141 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:03:44,147 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:03:44,161 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:03:44,191 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:03:44,192 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:03:44,192 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:03:44,192 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:03:44,192 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:03:44,192 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:03:44,192 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:03:44,192 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:03:44,221 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 00:03:44,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 00:03:44,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:44,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:44,232 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:44,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:44,239 INFO L82 PathProgramCache]: Analyzing trace with hash -2123609836, now seen corresponding path program 1 times [2020-10-27 00:03:44,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:44,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868088513] [2020-10-27 00:03:44,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:44,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:45,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:45,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:03:45,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:45,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-27 00:03:45,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:45,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:03:45,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:03:45,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 00:03:45,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:03:45,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:45,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:45,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:45,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:45,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:45,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 00:03:45,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:45,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:45,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:45,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:03:45,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:03:45,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868088513] [2020-10-27 00:03:45,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:03:45,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:03:45,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381834610] [2020-10-27 00:03:45,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:03:45,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:45,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:03:45,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:03:45,326 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-27 00:03:50,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:50,032 INFO L93 Difference]: Finished difference Result 1174 states and 2171 transitions. [2020-10-27 00:03:50,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:03:50,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-10-27 00:03:50,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:50,060 INFO L225 Difference]: With dead ends: 1174 [2020-10-27 00:03:50,060 INFO L226 Difference]: Without dead ends: 697 [2020-10-27 00:03:50,071 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 [2020-10-27 00:03:50,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-27 00:03:50,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-27 00:03:50,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-27 00:03:50,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1078 transitions. [2020-10-27 00:03:50,214 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1078 transitions. Word has length 64 [2020-10-27 00:03:50,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:50,216 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1078 transitions. [2020-10-27 00:03:50,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:03:50,216 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1078 transitions. [2020-10-27 00:03:50,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 00:03:50,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:50,225 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:50,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:03:50,225 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:50,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:50,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1065868762, now seen corresponding path program 1 times [2020-10-27 00:03:50,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:50,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279483727] [2020-10-27 00:03:50,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:50,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:50,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 00:03:51,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:03:51,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1204 [2020-10-27 00:03:51,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:03:51,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:03:51,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 00:03:51,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:03:51,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:51,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:03:51,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:51,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:51,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:03:51,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 00:03:51,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 00:03:51,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:51,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:51,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:03:51,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:03:51,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279483727] [2020-10-27 00:03:51,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:03:51,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 00:03:51,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476365012] [2020-10-27 00:03:51,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:03:51,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:51,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:03:51,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:03:51,946 INFO L87 Difference]: Start difference. First operand 690 states and 1078 transitions. Second operand 8 states. [2020-10-27 00:03:59,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:59,814 INFO L93 Difference]: Finished difference Result 2782 states and 4425 transitions. [2020-10-27 00:03:59,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:03:59,814 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2020-10-27 00:03:59,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:59,829 INFO L225 Difference]: With dead ends: 2782 [2020-10-27 00:03:59,829 INFO L226 Difference]: Without dead ends: 2098 [2020-10-27 00:03:59,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-27 00:03:59,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2020-10-27 00:03:59,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 2086. [2020-10-27 00:03:59,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2086 states. [2020-10-27 00:03:59,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 2979 transitions. [2020-10-27 00:03:59,932 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 2979 transitions. Word has length 139 [2020-10-27 00:03:59,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:59,933 INFO L481 AbstractCegarLoop]: Abstraction has 2086 states and 2979 transitions. [2020-10-27 00:03:59,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:03:59,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 2979 transitions. [2020-10-27 00:03:59,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-27 00:03:59,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:59,963 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:59,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:03:59,963 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:59,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:59,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1209842306, now seen corresponding path program 1 times [2020-10-27 00:03:59,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:59,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831547129] [2020-10-27 00:03:59,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:00,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:00,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:00,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:00,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:01,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:04,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:04,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:05,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:05,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-27 00:04:05,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 00:04:05,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 00:04:05,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:05,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:04:05,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:04:05,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-27 00:04:05,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:05,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:05,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:05,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:05,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:05,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:05,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:04:05,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:05,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:05,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:05,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:04:05,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:05,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:05,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:05,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:05,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:05,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:04:05,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:04:05,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-27 00:04:05,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:05,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:05,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 00:04:05,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:05,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:04:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:05,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:05,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:05,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:04:05,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:05,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 00:04:05,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:05,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:05,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:05,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 00:04:05,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 113 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 00:04:05,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831547129] [2020-10-27 00:04:05,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:05,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:05,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006535653] [2020-10-27 00:04:05,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:04:05,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:05,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:04:05,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:04:05,736 INFO L87 Difference]: Start difference. First operand 2086 states and 2979 transitions. Second operand 8 states. [2020-10-27 00:04:11,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:11,062 INFO L93 Difference]: Finished difference Result 5244 states and 7761 transitions. [2020-10-27 00:04:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:04:11,064 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 227 [2020-10-27 00:04:11,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:11,094 INFO L225 Difference]: With dead ends: 5244 [2020-10-27 00:04:11,095 INFO L226 Difference]: Without dead ends: 3164 [2020-10-27 00:04:11,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:04:11,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2020-10-27 00:04:11,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2789. [2020-10-27 00:04:11,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2789 states. [2020-10-27 00:04:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 3938 transitions. [2020-10-27 00:04:11,233 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 3938 transitions. Word has length 227 [2020-10-27 00:04:11,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:11,237 INFO L481 AbstractCegarLoop]: Abstraction has 2789 states and 3938 transitions. [2020-10-27 00:04:11,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:04:11,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 3938 transitions. [2020-10-27 00:04:11,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-27 00:04:11,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:11,252 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 00:04:11,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:04:11,253 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:11,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:11,253 INFO L82 PathProgramCache]: Analyzing trace with hash 201544570, now seen corresponding path program 1 times [2020-10-27 00:04:11,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:11,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713846022] [2020-10-27 00:04:11,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:11,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:11,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:11,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:13,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:15,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:15,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-27 00:04:15,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:04:15,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4099 [2020-10-27 00:04:15,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:15,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:04:15,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:04:15,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 223 [2020-10-27 00:04:15,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:15,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:15,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:15,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:15,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:15,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:04:15,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:04:15,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:15,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:15,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:15,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:15,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:15,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:04:15,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:04:15,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-27 00:04:15,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 00:04:15,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:16,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 00:04:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:16,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:16,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:16,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:16,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:16,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 00:04:16,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:16,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:16,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:16,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 00:04:16,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-27 00:04:16,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713846022] [2020-10-27 00:04:16,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:16,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:16,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811151716] [2020-10-27 00:04:16,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:04:16,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:16,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:04:16,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:04:16,477 INFO L87 Difference]: Start difference. First operand 2789 states and 3938 transitions. Second operand 8 states. [2020-10-27 00:04:21,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:21,749 INFO L93 Difference]: Finished difference Result 6669 states and 9418 transitions. [2020-10-27 00:04:21,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:04:21,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 279 [2020-10-27 00:04:21,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:21,772 INFO L225 Difference]: With dead ends: 6669 [2020-10-27 00:04:21,772 INFO L226 Difference]: Without dead ends: 3886 [2020-10-27 00:04:21,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:04:21,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2020-10-27 00:04:21,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 3841. [2020-10-27 00:04:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3841 states. [2020-10-27 00:04:21,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3841 states to 3841 states and 4910 transitions. [2020-10-27 00:04:21,894 INFO L78 Accepts]: Start accepts. Automaton has 3841 states and 4910 transitions. Word has length 279 [2020-10-27 00:04:21,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:21,895 INFO L481 AbstractCegarLoop]: Abstraction has 3841 states and 4910 transitions. [2020-10-27 00:04:21,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:04:21,896 INFO L276 IsEmpty]: Start isEmpty. Operand 3841 states and 4910 transitions. [2020-10-27 00:04:21,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-27 00:04:21,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:21,907 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-27 00:04:21,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:04:21,907 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:21,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:21,908 INFO L82 PathProgramCache]: Analyzing trace with hash 574271936, now seen corresponding path program 1 times [2020-10-27 00:04:21,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:21,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647141024] [2020-10-27 00:04:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:22,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:22,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:22,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:26,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:26,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:26,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 424 [2020-10-27 00:04:27,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:04:27,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 00:04:27,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:27,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:04:27,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:04:27,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:04:27,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:27,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:27,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:27,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:27,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:27,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:27,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:04:27,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:04:27,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:27,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:27,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:27,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:27,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:04:27,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:27,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 00:04:27,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:27,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:27,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:27,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 00:04:27,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:27,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 00:04:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:27,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:27,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:27,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:27,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:27,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 00:04:27,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:27,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:27,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:04:27,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:27,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:27,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 00:04:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:27,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:27,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:27,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:27,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:27,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:04:27,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:27,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:27,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:27,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:27,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 168 proven. 190 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-27 00:04:27,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647141024] [2020-10-27 00:04:27,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:27,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:27,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214016130] [2020-10-27 00:04:27,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:27,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:27,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:27,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:27,747 INFO L87 Difference]: Start difference. First operand 3841 states and 4910 transitions. Second operand 7 states. [2020-10-27 00:04:33,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:33,164 INFO L93 Difference]: Finished difference Result 8424 states and 10704 transitions. [2020-10-27 00:04:33,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:04:33,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 408 [2020-10-27 00:04:33,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:33,186 INFO L225 Difference]: With dead ends: 8424 [2020-10-27 00:04:33,186 INFO L226 Difference]: Without dead ends: 4589 [2020-10-27 00:04:33,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:04:33,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4589 states. [2020-10-27 00:04:33,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4589 to 4528. [2020-10-27 00:04:33,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4528 states. [2020-10-27 00:04:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4528 states to 4528 states and 5670 transitions. [2020-10-27 00:04:33,315 INFO L78 Accepts]: Start accepts. Automaton has 4528 states and 5670 transitions. Word has length 408 [2020-10-27 00:04:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:33,316 INFO L481 AbstractCegarLoop]: Abstraction has 4528 states and 5670 transitions. [2020-10-27 00:04:33,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:33,316 INFO L276 IsEmpty]: Start isEmpty. Operand 4528 states and 5670 transitions. [2020-10-27 00:04:33,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-10-27 00:04:33,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:33,330 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-27 00:04:33,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:04:33,331 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:33,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:33,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1489777254, now seen corresponding path program 1 times [2020-10-27 00:04:33,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:33,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345990187] [2020-10-27 00:04:33,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:33,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:33,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:33,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:34,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:38,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:38,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:38,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 517 [2020-10-27 00:04:38,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:04:38,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 00:04:38,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:38,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:38,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 00:04:38,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:04:38,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:38,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:38,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:38,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:38,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:38,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:38,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:04:38,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:38,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:38,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:38,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:38,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:38,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:04:38,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:38,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 00:04:38,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 00:04:38,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:38,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:04:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:38,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:38,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:38,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:04:38,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:38,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 00:04:38,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:38,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:38,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:38,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 00:04:38,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:04:38,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-27 00:04:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:38,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:39,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:39,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:39,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:39,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 00:04:39,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:04:39,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:39,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:04:39,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-27 00:04:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:39,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:39,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:39,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:39,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:39,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 00:04:39,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:39,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:04:39,664 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 320 proven. 196 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2020-10-27 00:04:39,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345990187] [2020-10-27 00:04:39,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:39,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:39,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826763435] [2020-10-27 00:04:39,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:39,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:39,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:39,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:39,669 INFO L87 Difference]: Start difference. First operand 4528 states and 5670 transitions. Second operand 7 states. [2020-10-27 00:04:45,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:45,597 INFO L93 Difference]: Finished difference Result 10462 states and 13502 transitions. [2020-10-27 00:04:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:04:45,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 499 [2020-10-27 00:04:45,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:45,624 INFO L225 Difference]: With dead ends: 10462 [2020-10-27 00:04:45,625 INFO L226 Difference]: Without dead ends: 5542 [2020-10-27 00:04:45,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:04:45,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5542 states. [2020-10-27 00:04:45,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5542 to 5519. [2020-10-27 00:04:45,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5519 states. [2020-10-27 00:04:45,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5519 states to 5519 states and 6055 transitions. [2020-10-27 00:04:45,779 INFO L78 Accepts]: Start accepts. Automaton has 5519 states and 6055 transitions. Word has length 499 [2020-10-27 00:04:45,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:45,779 INFO L481 AbstractCegarLoop]: Abstraction has 5519 states and 6055 transitions. [2020-10-27 00:04:45,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:45,780 INFO L276 IsEmpty]: Start isEmpty. Operand 5519 states and 6055 transitions. [2020-10-27 00:04:45,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2020-10-27 00:04:45,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:45,812 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:45,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:04:45,813 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:45,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:45,814 INFO L82 PathProgramCache]: Analyzing trace with hash -2067950414, now seen corresponding path program 1 times [2020-10-27 00:04:45,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:45,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113594993] [2020-10-27 00:04:45,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:45,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:46,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:46,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:50,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:50,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:50,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 749 [2020-10-27 00:04:50,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:04:50,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 00:04:50,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 00:04:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:04:50,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:51,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:51,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:51,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:51,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:51,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:51,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:04:51,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:51,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:51,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:51,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:51,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:51,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:04:51,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:51,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-27 00:04:51,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:51,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:51,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:51,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 00:04:51,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:51,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:04:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:51,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:51,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:51,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:51,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:51,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 00:04:51,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:51,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:51,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:51,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:04:51,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:51,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-27 00:04:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:51,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:51,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:51,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:51,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:51,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:04:51,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:51,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:51,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-27 00:04:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:51,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:51,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:51,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:04:51,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:51,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:04:51,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:04:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:51,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:51,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:04:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:51,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:51,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:51,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:04:51,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:51,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:04:51,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:51,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:51,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 00:04:51,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:51,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 418 proven. 290 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2020-10-27 00:04:52,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113594993] [2020-10-27 00:04:52,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:52,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:52,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499352876] [2020-10-27 00:04:52,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:52,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:52,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:52,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:52,306 INFO L87 Difference]: Start difference. First operand 5519 states and 6055 transitions. Second operand 7 states. [2020-10-27 00:04:56,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:56,518 INFO L93 Difference]: Finished difference Result 12408 states and 13742 transitions. [2020-10-27 00:04:56,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:04:56,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 729 [2020-10-27 00:04:56,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:56,546 INFO L225 Difference]: With dead ends: 12408 [2020-10-27 00:04:56,546 INFO L226 Difference]: Without dead ends: 7232 [2020-10-27 00:04:56,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:04:56,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7232 states. [2020-10-27 00:04:56,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7232 to 6546. [2020-10-27 00:04:56,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6546 states. [2020-10-27 00:04:56,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6546 states to 6546 states and 7151 transitions. [2020-10-27 00:04:56,715 INFO L78 Accepts]: Start accepts. Automaton has 6546 states and 7151 transitions. Word has length 729 [2020-10-27 00:04:56,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:56,716 INFO L481 AbstractCegarLoop]: Abstraction has 6546 states and 7151 transitions. [2020-10-27 00:04:56,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:56,716 INFO L276 IsEmpty]: Start isEmpty. Operand 6546 states and 7151 transitions. [2020-10-27 00:04:56,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2020-10-27 00:04:56,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:56,736 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:56,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:04:56,736 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:56,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:56,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1578928132, now seen corresponding path program 1 times [2020-10-27 00:04:56,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:56,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185082596] [2020-10-27 00:04:56,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:56,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:57,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:57,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:01,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:01,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 894 [2020-10-27 00:05:01,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:05:01,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 00:05:01,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-27 00:05:01,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:05:01,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:02,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:02,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:02,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:02,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:02,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:02,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:05:02,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:02,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:02,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:02,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:02,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:02,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:05:02,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:02,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:05:02,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:02,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:02,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:02,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:05:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:02,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:02,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:02,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:05:02,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:02,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:05:02,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:02,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:02,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:02,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 00:05:02,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:02,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:05:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:02,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:02,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:02,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:05:02,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:02,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 00:05:02,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:02,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:02,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:02,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:05:02,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:02,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 00:05:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:02,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:02,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:02,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:05:02,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:02,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:05:02,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:05:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:02,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:02,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:05:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:02,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:02,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:02,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:05:02,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:02,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 00:05:02,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:05:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:02,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:02,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-27 00:05:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:02,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:02,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:02,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 00:05:02,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:02,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 00:05:02,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:02,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:02,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 00:05:02,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:02,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 588 proven. 325 refuted. 0 times theorem prover too weak. 1040 trivial. 0 not checked. [2020-10-27 00:05:03,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185082596] [2020-10-27 00:05:03,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:03,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:03,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578830672] [2020-10-27 00:05:03,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:03,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:03,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:03,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:03,772 INFO L87 Difference]: Start difference. First operand 6546 states and 7151 transitions. Second operand 7 states. [2020-10-27 00:05:09,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:09,969 INFO L93 Difference]: Finished difference Result 14803 states and 16254 transitions. [2020-10-27 00:05:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:05:09,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 872 [2020-10-27 00:05:09,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:10,005 INFO L225 Difference]: With dead ends: 14803 [2020-10-27 00:05:10,006 INFO L226 Difference]: Without dead ends: 8602 [2020-10-27 00:05:10,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:05:10,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8602 states. [2020-10-27 00:05:10,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8602 to 8253. [2020-10-27 00:05:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8253 states. [2020-10-27 00:05:10,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8253 states to 8253 states and 8979 transitions. [2020-10-27 00:05:10,182 INFO L78 Accepts]: Start accepts. Automaton has 8253 states and 8979 transitions. Word has length 872 [2020-10-27 00:05:10,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:10,183 INFO L481 AbstractCegarLoop]: Abstraction has 8253 states and 8979 transitions. [2020-10-27 00:05:10,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:10,184 INFO L276 IsEmpty]: Start isEmpty. Operand 8253 states and 8979 transitions. [2020-10-27 00:05:10,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2020-10-27 00:05:10,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:10,205 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:05:10,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:05:10,206 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:10,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:10,206 INFO L82 PathProgramCache]: Analyzing trace with hash -149602226, now seen corresponding path program 1 times [2020-10-27 00:05:10,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:10,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613484812] [2020-10-27 00:05:10,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:10,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:10,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:10,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:11,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:15,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:15,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 943 [2020-10-27 00:05:15,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:05:15,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 00:05:15,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:15,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:05:15,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:05:15,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-27 00:05:15,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:15,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:15,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:15,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:15,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:15,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:15,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:05:15,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:15,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:05:15,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:15,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:15,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:15,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:16,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:16,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:05:16,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:05:16,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-27 00:05:16,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-27 00:05:16,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:16,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:05:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:17,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:17,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:17,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:05:17,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:17,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-27 00:05:17,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:17,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:17,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:17,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:05:17,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:17,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 00:05:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:17,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:17,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:17,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:05:17,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:17,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:05:17,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:17,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:17,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:05:17,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:17,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:17,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-27 00:05:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:17,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:17,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:17,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:05:17,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:17,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:05:17,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:17,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:05:17,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:17,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:17,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2020-10-27 00:05:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:17,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:17,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:17,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:05:17,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:17,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:05:17,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:17,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:17,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:05:17,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:17,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1588 backedges. 533 proven. 698 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2020-10-27 00:05:19,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613484812] [2020-10-27 00:05:19,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:19,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:05:19,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227050869] [2020-10-27 00:05:19,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:05:19,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:19,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:05:19,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:05:19,750 INFO L87 Difference]: Start difference. First operand 8253 states and 8979 transitions. Second operand 8 states. [2020-10-27 00:05:26,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:26,011 INFO L93 Difference]: Finished difference Result 16514 states and 17984 transitions. [2020-10-27 00:05:26,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:05:26,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 923 [2020-10-27 00:05:26,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:26,037 INFO L225 Difference]: With dead ends: 16514 [2020-10-27 00:05:26,037 INFO L226 Difference]: Without dead ends: 8606 [2020-10-27 00:05:26,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:05:26,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8606 states. [2020-10-27 00:05:26,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8606 to 8592. [2020-10-27 00:05:26,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8592 states. [2020-10-27 00:05:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8592 states to 8592 states and 9327 transitions. [2020-10-27 00:05:26,241 INFO L78 Accepts]: Start accepts. Automaton has 8592 states and 9327 transitions. Word has length 923 [2020-10-27 00:05:26,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:26,243 INFO L481 AbstractCegarLoop]: Abstraction has 8592 states and 9327 transitions. [2020-10-27 00:05:26,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:05:26,243 INFO L276 IsEmpty]: Start isEmpty. Operand 8592 states and 9327 transitions. [2020-10-27 00:05:26,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2020-10-27 00:05:26,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:26,270 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, 8, 8, 8, 8, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:05:26,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:05:26,271 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:26,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:26,272 INFO L82 PathProgramCache]: Analyzing trace with hash 339239990, now seen corresponding path program 1 times [2020-10-27 00:05:26,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:26,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167730893] [2020-10-27 00:05:26,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:26,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:26,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:27,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:29,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:31,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:31,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1051 [2020-10-27 00:05:31,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:05:31,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-27 00:05:31,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 00:05:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 00:05:31,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:31,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:31,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:31,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:31,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:31,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:31,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:05:31,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:31,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:31,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:31,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:31,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:31,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:31,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:31,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:31,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:05:31,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:31,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 00:05:31,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 00:05:31,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:32,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:05:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:32,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:32,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:32,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:05:32,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:32,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 00:05:32,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-27 00:05:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:32,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-27 00:05:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:32,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:32,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:32,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:05:32,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 00:05:32,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:32,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:32,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:05:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:32,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-27 00:05:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:32,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:32,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:32,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:05:32,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:32,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:05:32,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 00:05:32,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:32,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:32,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-27 00:05:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:32,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:32,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:32,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:05:32,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:32,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:05:32,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:05:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:32,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:32,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-10-27 00:05:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:32,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:32,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:32,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:05:32,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:32,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:05:32,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:32,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:05:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:32,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:32,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 833 [2020-10-27 00:05:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:32,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:32,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:32,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:05:32,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:32,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 00:05:32,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:32,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:32,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:05:32,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:32,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2647 backedges. 571 proven. 549 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2020-10-27 00:05:33,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167730893] [2020-10-27 00:05:33,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:33,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:33,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366422894] [2020-10-27 00:05:33,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:33,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:33,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:33,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:33,754 INFO L87 Difference]: Start difference. First operand 8592 states and 9327 transitions. Second operand 7 states. [2020-10-27 00:05:38,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:38,330 INFO L93 Difference]: Finished difference Result 17868 states and 19420 transitions. [2020-10-27 00:05:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:05:38,331 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1027 [2020-10-27 00:05:38,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:38,356 INFO L225 Difference]: With dead ends: 17868 [2020-10-27 00:05:38,356 INFO L226 Difference]: Without dead ends: 9621 [2020-10-27 00:05:38,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:05:38,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9621 states. [2020-10-27 00:05:38,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9621 to 9274. [2020-10-27 00:05:38,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9274 states. [2020-10-27 00:05:38,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9274 states to 9274 states and 10048 transitions. [2020-10-27 00:05:38,549 INFO L78 Accepts]: Start accepts. Automaton has 9274 states and 10048 transitions. Word has length 1027 [2020-10-27 00:05:38,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:38,550 INFO L481 AbstractCegarLoop]: Abstraction has 9274 states and 10048 transitions. [2020-10-27 00:05:38,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:38,550 INFO L276 IsEmpty]: Start isEmpty. Operand 9274 states and 10048 transitions. [2020-10-27 00:05:38,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2020-10-27 00:05:38,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:38,574 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, 8, 8, 8, 8, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:05:38,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:05:38,575 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:38,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:38,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1514529512, now seen corresponding path program 1 times [2020-10-27 00:05:38,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:38,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719149542] [2020-10-27 00:05:38,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:38,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:39,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:39,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:39,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:43,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:43,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1054 [2020-10-27 00:05:43,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:05:43,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-27 00:05:43,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:43,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:43,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-27 00:05:43,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:05:43,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:44,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:44,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:44,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:44,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:44,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:44,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:05:44,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:44,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:44,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:44,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:44,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:44,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:44,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:44,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:44,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:05:44,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:44,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 00:05:44,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:44,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:44,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:44,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:44,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:44,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:05:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:44,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:44,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:44,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 00:05:44,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:44,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 00:05:44,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:44,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:44,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:44,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-27 00:05:44,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:44,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-27 00:05:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:44,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:44,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:44,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:05:44,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:44,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 00:05:44,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:44,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:44,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:05:44,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:44,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-10-27 00:05:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:44,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:44,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:44,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:05:44,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:44,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:05:44,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 00:05:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:44,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:44,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2020-10-27 00:05:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:44,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:44,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:44,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:05:44,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:44,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:05:44,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:05:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:44,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:44,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 726 [2020-10-27 00:05:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:44,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:44,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:44,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:05:44,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:44,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:05:44,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:05:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:44,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:44,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 836 [2020-10-27 00:05:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:44,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:44,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:44,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:05:44,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:44,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:05:44,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:44,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:44,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:05:44,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:44,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2642 backedges. 681 proven. 414 refuted. 0 times theorem prover too weak. 1547 trivial. 0 not checked. [2020-10-27 00:05:45,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719149542] [2020-10-27 00:05:45,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:45,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:45,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515937439] [2020-10-27 00:05:45,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:45,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:45,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:45,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:45,579 INFO L87 Difference]: Start difference. First operand 9274 states and 10048 transitions. Second operand 7 states. [2020-10-27 00:05:50,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:50,314 INFO L93 Difference]: Finished difference Result 18223 states and 19779 transitions. [2020-10-27 00:05:50,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:05:50,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1030 [2020-10-27 00:05:50,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:50,346 INFO L225 Difference]: With dead ends: 18223 [2020-10-27 00:05:50,347 INFO L226 Difference]: Without dead ends: 9294 [2020-10-27 00:05:50,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:05:50,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9294 states. [2020-10-27 00:05:50,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9294 to 8943. [2020-10-27 00:05:50,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8943 states. [2020-10-27 00:05:50,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8943 states to 8943 states and 9467 transitions. [2020-10-27 00:05:50,537 INFO L78 Accepts]: Start accepts. Automaton has 8943 states and 9467 transitions. Word has length 1030 [2020-10-27 00:05:50,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:50,538 INFO L481 AbstractCegarLoop]: Abstraction has 8943 states and 9467 transitions. [2020-10-27 00:05:50,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:50,538 INFO L276 IsEmpty]: Start isEmpty. Operand 8943 states and 9467 transitions. [2020-10-27 00:05:50,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1431 [2020-10-27 00:05:50,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:50,579 INFO L422 BasicCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-27 00:05:50,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:05:50,579 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:50,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:50,580 INFO L82 PathProgramCache]: Analyzing trace with hash 202888476, now seen corresponding path program 1 times [2020-10-27 00:05:50,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:50,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722433953] [2020-10-27 00:05:50,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:51,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:51,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:51,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:56,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:56,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1454 [2020-10-27 00:05:56,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:05:56,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5210 [2020-10-27 00:05:56,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:05:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:05:56,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:56,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:56,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:56,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:56,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:56,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:56,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:05:56,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:56,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:56,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:56,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:56,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:56,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:56,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:56,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:56,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:05:56,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:56,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 00:05:56,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:56,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:56,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:56,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:56,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:56,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:05:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:56,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:56,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:56,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:05:56,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:56,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 00:05:56,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:05:56,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:56,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:05:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:56,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:56,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:56,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:05:56,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:56,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 00:05:56,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:56,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:56,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:56,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:05:56,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:56,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:05:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:56,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:57,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:57,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:05:57,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:57,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:05:57,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:57,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:57,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-27 00:05:57,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:57,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:57,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-27 00:05:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:57,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:57,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:57,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:05:57,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:57,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 00:05:57,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:57,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:57,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:05:57,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:57,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:57,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-27 00:05:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:57,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:57,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:57,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:05:57,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:57,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 00:05:57,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-27 00:05:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:57,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:57,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:05:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:57,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:57,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:57,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:05:57,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:57,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:05:57,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:57,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:57,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:57,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:57,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:58,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3181 backedges. 617 proven. 380 refuted. 0 times theorem prover too weak. 2184 trivial. 0 not checked. [2020-10-27 00:05:58,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722433953] [2020-10-27 00:05:58,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:58,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:58,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943876678] [2020-10-27 00:05:58,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:58,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:58,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:58,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:58,957 INFO L87 Difference]: Start difference. First operand 8943 states and 9467 transitions. Second operand 7 states. [2020-10-27 00:06:03,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:06:03,936 INFO L93 Difference]: Finished difference Result 17903 states and 18993 transitions. [2020-10-27 00:06:03,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:06:03,937 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1430 [2020-10-27 00:06:03,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:06:03,959 INFO L225 Difference]: With dead ends: 17903 [2020-10-27 00:06:03,959 INFO L226 Difference]: Without dead ends: 9305 [2020-10-27 00:06:03,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:06:03,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9305 states. [2020-10-27 00:06:04,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9305 to 9287. [2020-10-27 00:06:04,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9287 states. [2020-10-27 00:06:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9287 states to 9287 states and 9826 transitions. [2020-10-27 00:06:04,126 INFO L78 Accepts]: Start accepts. Automaton has 9287 states and 9826 transitions. Word has length 1430 [2020-10-27 00:06:04,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:06:04,127 INFO L481 AbstractCegarLoop]: Abstraction has 9287 states and 9826 transitions. [2020-10-27 00:06:04,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:06:04,128 INFO L276 IsEmpty]: Start isEmpty. Operand 9287 states and 9826 transitions. [2020-10-27 00:06:04,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1433 [2020-10-27 00:06:04,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:06:04,162 INFO L422 BasicCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-27 00:06:04,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:06:04,163 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:06:04,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:06:04,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1152975272, now seen corresponding path program 1 times [2020-10-27 00:06:04,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:06:04,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838949086] [2020-10-27 00:06:04,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:06:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:04,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:05,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:05,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:09,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:09,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1456 [2020-10-27 00:06:09,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:06:09,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-27 00:06:09,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:09,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:09,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-27 00:06:09,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:06:09,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:09,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:06:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:09,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:09,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:09,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:06:09,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:09,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:06:09,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:09,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:09,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:09,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:09,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:09,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:06:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:09,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:09,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:09,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:06:09,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:09,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 00:06:09,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:09,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:09,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:06:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:10,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:10,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:10,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:06:10,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:10,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 00:06:10,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:10,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:06:10,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-27 00:06:10,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:10,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:06:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:10,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:10,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:10,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:06:10,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:10,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 00:06:10,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:06:10,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:06:10,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:10,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:06:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:10,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:10,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:10,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:06:10,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:10,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 00:06:10,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-27 00:06:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:10,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:10,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-27 00:06:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:10,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:10,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:10,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:06:10,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:10,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 00:06:10,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:10,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:10,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:06:10,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:10,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:10,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2020-10-27 00:06:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:10,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:11,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:11,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:06:11,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:11,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 00:06:11,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:11,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:11,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-27 00:06:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:11,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:11,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:06:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:11,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:11,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:11,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:06:11,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:11,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:06:11,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:11,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:11,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:11,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:12,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3187 backedges. 617 proven. 380 refuted. 0 times theorem prover too weak. 2190 trivial. 0 not checked. [2020-10-27 00:06:12,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838949086] [2020-10-27 00:06:12,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:06:12,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:06:12,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980932550] [2020-10-27 00:06:12,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:06:12,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:06:12,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:06:12,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:06:12,425 INFO L87 Difference]: Start difference. First operand 9287 states and 9826 transitions. Second operand 7 states. [2020-10-27 00:06:19,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:06:19,501 INFO L93 Difference]: Finished difference Result 21966 states and 23437 transitions. [2020-10-27 00:06:19,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:06:19,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1432 [2020-10-27 00:06:19,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:06:19,526 INFO L225 Difference]: With dead ends: 21966 [2020-10-27 00:06:19,526 INFO L226 Difference]: Without dead ends: 13024 [2020-10-27 00:06:19,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:06:19,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13024 states. [2020-10-27 00:06:19,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13024 to 12342. [2020-10-27 00:06:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12342 states. [2020-10-27 00:06:19,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12342 states to 12342 states and 13023 transitions. [2020-10-27 00:06:19,770 INFO L78 Accepts]: Start accepts. Automaton has 12342 states and 13023 transitions. Word has length 1432 [2020-10-27 00:06:19,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:06:19,771 INFO L481 AbstractCegarLoop]: Abstraction has 12342 states and 13023 transitions. [2020-10-27 00:06:19,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:06:19,771 INFO L276 IsEmpty]: Start isEmpty. Operand 12342 states and 13023 transitions. [2020-10-27 00:06:19,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1478 [2020-10-27 00:06:19,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:06:19,812 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, 8, 8, 8, 8, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-27 00:06:19,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 00:06:19,813 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:06:19,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:06:19,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1859077362, now seen corresponding path program 1 times [2020-10-27 00:06:19,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:06:19,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525905537] [2020-10-27 00:06:19,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:06:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:20,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:20,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:25,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:25,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1503 [2020-10-27 00:06:25,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:06:25,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5203 [2020-10-27 00:06:25,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-27 00:06:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 00:06:25,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:25,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:06:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:25,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:25,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:25,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:06:25,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:25,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:06:25,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:25,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:25,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:06:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:25,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:25,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:25,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:06:25,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:25,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:06:25,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:25,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:25,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:25,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:25,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:25,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:06:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:25,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:25,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:25,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:06:25,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:25,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 00:06:25,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:25,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:25,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:25,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:25,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:25,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:06:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:25,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:26,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:26,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:06:26,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:26,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 00:06:26,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:26,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:26,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:26,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:26,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:26,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:06:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:26,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:26,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:26,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:06:26,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:26,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:06:26,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:26,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:26,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:06:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:26,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:26,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:26,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:06:26,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:26,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-27 00:06:26,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:06:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 00:06:26,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:26,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-27 00:06:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:26,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:27,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:27,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:06:27,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:27,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-27 00:06:27,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:06:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 00:06:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:27,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-27 00:06:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:27,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:27,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:27,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:06:27,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:27,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 00:06:27,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:27,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:27,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-27 00:06:27,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:27,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:28,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:06:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:28,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:28,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:28,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:06:28,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:28,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:06:28,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:28,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3637 backedges. 1250 proven. 272 refuted. 0 times theorem prover too weak. 2115 trivial. 0 not checked. [2020-10-27 00:06:30,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525905537] [2020-10-27 00:06:30,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:06:30,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:06:30,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145955590] [2020-10-27 00:06:30,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:06:30,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:06:30,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:06:30,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:06:30,503 INFO L87 Difference]: Start difference. First operand 12342 states and 13023 transitions. Second operand 7 states. [2020-10-27 00:06:35,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:06:35,297 INFO L93 Difference]: Finished difference Result 25368 states and 26790 transitions. [2020-10-27 00:06:35,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:06:35,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1477 [2020-10-27 00:06:35,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:06:35,326 INFO L225 Difference]: With dead ends: 25368 [2020-10-27 00:06:35,326 INFO L226 Difference]: Without dead ends: 13712 [2020-10-27 00:06:35,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:06:35,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13712 states. [2020-10-27 00:06:35,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13712 to 13696. [2020-10-27 00:06:35,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13696 states. [2020-10-27 00:06:35,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13696 states to 13696 states and 14406 transitions. [2020-10-27 00:06:35,712 INFO L78 Accepts]: Start accepts. Automaton has 13696 states and 14406 transitions. Word has length 1477 [2020-10-27 00:06:35,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:06:35,713 INFO L481 AbstractCegarLoop]: Abstraction has 13696 states and 14406 transitions. [2020-10-27 00:06:35,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:06:35,713 INFO L276 IsEmpty]: Start isEmpty. Operand 13696 states and 14406 transitions. [2020-10-27 00:06:35,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1561 [2020-10-27 00:06:35,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:06:35,757 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, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2020-10-27 00:06:35,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 00:06:35,758 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:06:35,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:06:35,758 INFO L82 PathProgramCache]: Analyzing trace with hash 169788344, now seen corresponding path program 1 times [2020-10-27 00:06:35,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:06:35,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523723079] [2020-10-27 00:06:35,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:06:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:36,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:36,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:36,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:41,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:41,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1590 [2020-10-27 00:06:41,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:06:41,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-27 00:06:41,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:41,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:41,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-27 00:06:41,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-27 00:06:41,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:41,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:06:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:41,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:41,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:41,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:06:41,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:41,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:06:41,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:41,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:41,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:41,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:41,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:41,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:06:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:41,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:41,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:41,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:06:41,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:41,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:06:41,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:41,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:41,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:41,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:41,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:41,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:06:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:41,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:41,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:41,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:06:41,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:41,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 00:06:41,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:41,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:41,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:06:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:41,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:41,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:41,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:06:41,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:41,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:06:41,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:41,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:41,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:06:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:41,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:41,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:41,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:06:41,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:41,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:06:41,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:41,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:41,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:06:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:41,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:41,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:41,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:06:41,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:41,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:06:41,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:41,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:06:41,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 00:06:41,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:41,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-27 00:06:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:41,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:41,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:41,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:06:41,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:41,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-27 00:06:41,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:06:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 00:06:41,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:42,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 860 [2020-10-27 00:06:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:42,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:42,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:42,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:06:42,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:42,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:06:42,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:42,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:06:42,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:42,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:42,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1002 [2020-10-27 00:06:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:42,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:42,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:42,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:06:42,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:42,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:06:42,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:42,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:42,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:06:42,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:42,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:42,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2020-10-27 00:06:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:42,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:42,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:42,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:06:42,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:42,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:06:42,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:06:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:42,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:42,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1250 [2020-10-27 00:06:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:42,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:42,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:42,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 00:06:42,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:42,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 00:06:42,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:42,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:42,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-27 00:06:42,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:42,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5795 backedges. 1232 proven. 524 refuted. 0 times theorem prover too weak. 4039 trivial. 0 not checked. [2020-10-27 00:06:43,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523723079] [2020-10-27 00:06:43,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:06:43,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:06:43,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431103959] [2020-10-27 00:06:43,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:06:43,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:06:43,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:06:43,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:06:43,790 INFO L87 Difference]: Start difference. First operand 13696 states and 14406 transitions. Second operand 7 states. [2020-10-27 00:06:50,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:06:50,660 INFO L93 Difference]: Finished difference Result 29079 states and 30813 transitions. [2020-10-27 00:06:50,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:06:50,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1560 [2020-10-27 00:06:50,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:06:50,695 INFO L225 Difference]: With dead ends: 29079 [2020-10-27 00:06:50,696 INFO L226 Difference]: Without dead ends: 16069 [2020-10-27 00:06:50,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:06:50,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16069 states. [2020-10-27 00:06:50,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16069 to 15728. [2020-10-27 00:06:50,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15728 states. [2020-10-27 00:06:50,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15728 states to 15728 states and 16503 transitions. [2020-10-27 00:06:50,990 INFO L78 Accepts]: Start accepts. Automaton has 15728 states and 16503 transitions. Word has length 1560 [2020-10-27 00:06:50,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:06:50,991 INFO L481 AbstractCegarLoop]: Abstraction has 15728 states and 16503 transitions. [2020-10-27 00:06:50,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:06:50,991 INFO L276 IsEmpty]: Start isEmpty. Operand 15728 states and 16503 transitions. [2020-10-27 00:06:51,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1611 [2020-10-27 00:06:51,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:06:51,029 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, 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, 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, 7, 7, 7, 6, 6, 6, 6, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:06:51,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 00:06:51,030 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:06:51,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:06:51,030 INFO L82 PathProgramCache]: Analyzing trace with hash 743501888, now seen corresponding path program 1 times [2020-10-27 00:06:51,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:06:51,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922280083] [2020-10-27 00:06:51,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:06:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:51,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:51,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:52,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:52,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:56,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:56,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1638 [2020-10-27 00:06:56,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:06:56,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-27 00:06:56,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:56,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:56,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-27 00:06:56,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:06:56,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:56,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:06:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:56,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:56,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:56,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:06:56,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:56,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:06:56,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:56,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:56,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:56,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:56,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:56,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:06:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:56,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:56,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:56,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:06:56,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:56,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 00:06:56,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:56,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:56,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:56,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:56,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:56,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:06:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:56,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:56,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:56,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 00:06:56,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:56,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:06:56,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:56,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:57,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-27 00:06:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:57,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:57,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:57,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 00:06:57,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:57,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-27 00:06:57,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:06:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-27 00:06:57,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:57,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-27 00:06:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:57,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:57,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:57,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 00:06:57,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:57,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 00:06:57,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:06:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-27 00:06:57,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:57,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 766 [2020-10-27 00:06:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:57,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:57,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:57,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:06:57,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:57,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 00:06:57,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:57,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:57,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:06:57,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:57,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:57,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 910 [2020-10-27 00:06:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:57,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:57,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:57,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:06:57,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:57,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 00:06:57,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:57,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:57,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:06:57,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:57,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:57,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1052 [2020-10-27 00:06:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:58,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:58,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:58,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:06:58,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:58,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 00:06:58,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:58,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:58,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:06:58,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:58,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:58,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1162 [2020-10-27 00:06:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:58,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:58,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:58,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:06:58,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:58,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 00:06:58,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:06:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:58,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:58,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1300 [2020-10-27 00:06:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:58,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:58,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:58,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 00:06:58,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:58,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 00:06:58,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:58,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-27 00:06:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:58,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0