/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/Problem18_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:21:25,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:21:25,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:21:25,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:21:25,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:21:25,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:21:25,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:21:25,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:21:25,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:21:25,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:21:25,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:21:25,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:21:25,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:21:25,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:21:25,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:21:25,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:21:25,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:21:25,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:21:25,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:21:25,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:21:25,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:21:25,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:21:25,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:21:25,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:21:25,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:21:25,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:21:25,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:21:25,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:21:25,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:21:25,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:21:25,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:21:25,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:21:25,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:21:25,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:21:25,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:21:25,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:21:25,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:21:25,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:21:25,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:21:25,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:21:25,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:21:25,203 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 00:21:25,237 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:21:25,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:21:25,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:21:25,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:21:25,241 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:21:25,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:21:25,242 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:21:25,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:21:25,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:21:25,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:21:25,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:21:25,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:21:25,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:21:25,243 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:21:25,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:21:25,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:21:25,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:21:25,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:21:25,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:21:25,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:21:25,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:21:25,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:21:25,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:21:25,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:21:25,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:21:25,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:21:25,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:21:25,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:21:25,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:21:25,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:21:25,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:21:25,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:21:25,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:21:25,827 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:21:25,829 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:21:25,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label00.c [2020-10-27 00:21:25,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f47c0ee84/d2420e65f1c94817be66cbdc96dddf36/FLAGacaa41cff [2020-10-27 00:21:27,027 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:21:27,028 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label00.c [2020-10-27 00:21:27,074 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f47c0ee84/d2420e65f1c94817be66cbdc96dddf36/FLAGacaa41cff [2020-10-27 00:21:27,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f47c0ee84/d2420e65f1c94817be66cbdc96dddf36 [2020-10-27 00:21:27,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:21:27,534 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:21:27,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:21:27,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:21:27,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:21:27,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:21:27" (1/1) ... [2020-10-27 00:21:27,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4166b21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:27, skipping insertion in model container [2020-10-27 00:21:27,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:21:27" (1/1) ... [2020-10-27 00:21:27,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:21:27,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:21:28,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:21:28,883 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:21:29,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:21:29,550 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:21:29,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:29 WrapperNode [2020-10-27 00:21:29,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:21:29,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:21:29,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:21:29,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:21:29,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:29" (1/1) ... [2020-10-27 00:21:29,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:29" (1/1) ... [2020-10-27 00:21:29,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:29" (1/1) ... [2020-10-27 00:21:29,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:29" (1/1) ... [2020-10-27 00:21:29,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:29" (1/1) ... [2020-10-27 00:21:29,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:29" (1/1) ... [2020-10-27 00:21:29,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:29" (1/1) ... [2020-10-27 00:21:29,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:21:29,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:21:29,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:21:29,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:21:29,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:29" (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 00:21:30,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:21:30,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:21:30,001 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:21:30,001 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:21:30,001 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:21:30,002 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:21:30,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:21:30,002 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:21:30,002 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:21:30,002 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:21:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:21:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:21:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:21:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:21:30,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:21:30,004 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:21:30,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:21:30,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:21:30,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:21:30,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:21:30,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:21:30,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:21:30,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:21:34,976 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:21:34,976 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:21:34,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:21:34 BoogieIcfgContainer [2020-10-27 00:21:34,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:21:34,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:21:35,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:21:35,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:21:35,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:21:27" (1/3) ... [2020-10-27 00:21:35,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b095435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:21:35, skipping insertion in model container [2020-10-27 00:21:35,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:29" (2/3) ... [2020-10-27 00:21:35,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b095435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:21:35, skipping insertion in model container [2020-10-27 00:21:35,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:21:34" (3/3) ... [2020-10-27 00:21:35,023 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label00.c [2020-10-27 00:21:35,059 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:21:35,072 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:21:35,100 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:21:35,160 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:21:35,160 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:21:35,160 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:21:35,160 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:21:35,160 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:21:35,161 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:21:35,161 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:21:35,161 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:21:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:21:35,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 00:21:35,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:21:35,237 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] [2020-10-27 00:21:35,238 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:21:35,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:21:35,246 INFO L82 PathProgramCache]: Analyzing trace with hash -537240848, now seen corresponding path program 1 times [2020-10-27 00:21:35,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:21:35,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494574090] [2020-10-27 00:21:35,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:21:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:21:35,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:36,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:21:36,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 00:21:36,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:21:36,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 769 [2020-10-27 00:21:36,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:21:36,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:21:36,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:21:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 00:21:36,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:21:36,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:21:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:21:36,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:36,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:21:36,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:21:36,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:21:36,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 00:21:36,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:21:36,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:21:36,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:21:36,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:21:36,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:21:36,693 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 00:21:36,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494574090] [2020-10-27 00:21:36,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:21:36,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:21:36,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921784491] [2020-10-27 00:21:36,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:21:36,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:21:36,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:21:36,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:21:36,745 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 00:21:53,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:21:53,336 INFO L93 Difference]: Finished difference Result 2989 states and 5773 transitions. [2020-10-27 00:21:53,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:21:53,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-27 00:21:53,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:21:53,375 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 00:21:53,376 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 00:21:53,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:21:53,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 00:21:53,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 00:21:53,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 00:21:53,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3564 transitions. [2020-10-27 00:21:53,581 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3564 transitions. Word has length 26 [2020-10-27 00:21:53,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:21:53,582 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3564 transitions. [2020-10-27 00:21:53,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:21:53,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3564 transitions. [2020-10-27 00:21:53,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 00:21:53,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:21:53,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:21:53,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:21:53,589 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:21:53,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:21:53,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1768469128, now seen corresponding path program 1 times [2020-10-27 00:21:53,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:21:53,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962269285] [2020-10-27 00:21:53,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:21:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:21:53,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:54,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:54,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:21:54,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 00:21:54,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:21:54,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1208 [2020-10-27 00:21:54,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:21:54,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:21:54,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:21:54,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:21:54,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:21:54,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:21:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:21:54,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:54,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:21:54,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:21:54,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:21:54,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:21:54,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:21:54,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:21:54,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:21:54,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:21:54,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:21:55,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:21:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:21:55,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:21:55,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:21:55,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:21:55,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:21:55,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 00:21:55,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:21:55,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:21:55,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:21:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 00:21:55,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:21:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:21:55,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962269285] [2020-10-27 00:21:55,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:21:55,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:21:55,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477344742] [2020-10-27 00:21:55,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:21:55,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:21:55,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:21:55,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:21:55,221 INFO L87 Difference]: Start difference. First operand 2136 states and 3564 transitions. Second operand 7 states. [2020-10-27 00:22:07,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:22:07,082 INFO L93 Difference]: Finished difference Result 6471 states and 10885 transitions. [2020-10-27 00:22:07,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:22:07,087 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-27 00:22:07,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:22:07,117 INFO L225 Difference]: With dead ends: 6471 [2020-10-27 00:22:07,118 INFO L226 Difference]: Without dead ends: 4341 [2020-10-27 00:22:07,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:22:07,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4341 states. [2020-10-27 00:22:07,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4341 to 3588. [2020-10-27 00:22:07,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3588 states. [2020-10-27 00:22:07,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 5289 transitions. [2020-10-27 00:22:07,272 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 5289 transitions. Word has length 96 [2020-10-27 00:22:07,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:22:07,273 INFO L481 AbstractCegarLoop]: Abstraction has 3588 states and 5289 transitions. [2020-10-27 00:22:07,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:22:07,273 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 5289 transitions. [2020-10-27 00:22:07,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 00:22:07,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:22:07,275 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 00:22:07,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:22:07,276 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:22:07,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:22:07,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1362814882, now seen corresponding path program 1 times [2020-10-27 00:22:07,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:22:07,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638770822] [2020-10-27 00:22:07,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:22:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:07,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:07,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:08,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:08,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 00:22:08,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:22:08,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-10-27 00:22:08,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:08,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:22:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:22:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 00:22:08,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:08,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:22:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:08,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:08,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:08,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:22:08,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:22:08,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:22:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:22:08,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:08,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:22:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:08,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:08,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:08,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 00:22:08,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:08,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 00:22:08,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:22:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:22:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:22:08,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:22:08,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638770822] [2020-10-27 00:22:08,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:22:08,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:22:08,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541325409] [2020-10-27 00:22:08,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:22:08,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:22:08,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:22:08,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:22:08,435 INFO L87 Difference]: Start difference. First operand 3588 states and 5289 transitions. Second operand 7 states. [2020-10-27 00:22:19,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:22:19,412 INFO L93 Difference]: Finished difference Result 8702 states and 12662 transitions. [2020-10-27 00:22:19,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:22:19,413 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-27 00:22:19,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:22:19,446 INFO L225 Difference]: With dead ends: 8702 [2020-10-27 00:22:19,446 INFO L226 Difference]: Without dead ends: 5120 [2020-10-27 00:22:19,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:22:19,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5120 states. [2020-10-27 00:22:19,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5120 to 5092. [2020-10-27 00:22:19,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5092 states. [2020-10-27 00:22:19,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 6842 transitions. [2020-10-27 00:22:19,620 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 6842 transitions. Word has length 101 [2020-10-27 00:22:19,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:22:19,620 INFO L481 AbstractCegarLoop]: Abstraction has 5092 states and 6842 transitions. [2020-10-27 00:22:19,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:22:19,621 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 6842 transitions. [2020-10-27 00:22:19,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 00:22:19,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:22:19,623 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 00:22:19,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:22:19,624 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:22:19,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:22:19,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1438188470, now seen corresponding path program 1 times [2020-10-27 00:22:19,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:22:19,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688457941] [2020-10-27 00:22:19,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:22:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:19,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:19,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:21,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:21,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 00:22:21,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:22:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1399 [2020-10-27 00:22:21,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:21,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:22:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:22:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:22:21,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 00:22:21,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:22:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:21,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:21,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:21,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:22:21,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:21,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:22:21,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:21,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:22:21,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:21,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:22:21,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:21,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:22:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:21,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:21,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:21,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:22:21,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:21,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-27 00:22:21,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:21,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:22:21,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:22:21,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:22:21,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:22:22,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688457941] [2020-10-27 00:22:22,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:22:22,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 00:22:22,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634274271] [2020-10-27 00:22:22,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:22:22,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:22:22,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:22:22,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:22:22,018 INFO L87 Difference]: Start difference. First operand 5092 states and 6842 transitions. Second operand 8 states. [2020-10-27 00:22:41,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:22:41,053 INFO L93 Difference]: Finished difference Result 14769 states and 20867 transitions. [2020-10-27 00:22:41,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:22:41,055 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-27 00:22:41,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:22:41,126 INFO L225 Difference]: With dead ends: 14769 [2020-10-27 00:22:41,130 INFO L226 Difference]: Without dead ends: 9683 [2020-10-27 00:22:41,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-27 00:22:41,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9683 states. [2020-10-27 00:22:41,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9683 to 9484. [2020-10-27 00:22:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9484 states. [2020-10-27 00:22:41,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9484 states to 9484 states and 11864 transitions. [2020-10-27 00:22:41,490 INFO L78 Accepts]: Start accepts. Automaton has 9484 states and 11864 transitions. Word has length 123 [2020-10-27 00:22:41,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:22:41,494 INFO L481 AbstractCegarLoop]: Abstraction has 9484 states and 11864 transitions. [2020-10-27 00:22:41,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:22:41,494 INFO L276 IsEmpty]: Start isEmpty. Operand 9484 states and 11864 transitions. [2020-10-27 00:22:41,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-27 00:22:41,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:22:41,508 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:22:41,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:22:41,509 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:22:41,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:22:41,510 INFO L82 PathProgramCache]: Analyzing trace with hash -701058544, now seen corresponding path program 1 times [2020-10-27 00:22:41,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:22:41,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716942410] [2020-10-27 00:22:41,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:22:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:41,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:42,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:42,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:22:42,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:42,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-27 00:22:42,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:22:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:22:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 00:22:42,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:42,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:22:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:42,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:42,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:42,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:22:42,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:42,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:22:42,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:42,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:22:42,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:22:42,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:42,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:22:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:42,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:42,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:42,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:22:42,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:42,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 00:22:42,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:42,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:22:42,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:42,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:22:42,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:22:42,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716942410] [2020-10-27 00:22:42,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:22:42,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 00:22:42,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753551270] [2020-10-27 00:22:42,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:22:42,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:22:42,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:22:42,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:22:42,504 INFO L87 Difference]: Start difference. First operand 9484 states and 11864 transitions. Second operand 5 states. [2020-10-27 00:22:55,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:22:55,241 INFO L93 Difference]: Finished difference Result 24011 states and 31164 transitions. [2020-10-27 00:22:55,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:22:55,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-27 00:22:55,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:22:55,327 INFO L225 Difference]: With dead ends: 24011 [2020-10-27 00:22:55,328 INFO L226 Difference]: Without dead ends: 14533 [2020-10-27 00:22:55,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:22:55,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14533 states. [2020-10-27 00:22:55,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14533 to 13815. [2020-10-27 00:22:55,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13815 states. [2020-10-27 00:22:55,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13815 states to 13815 states and 17288 transitions. [2020-10-27 00:22:55,719 INFO L78 Accepts]: Start accepts. Automaton has 13815 states and 17288 transitions. Word has length 212 [2020-10-27 00:22:55,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:22:55,721 INFO L481 AbstractCegarLoop]: Abstraction has 13815 states and 17288 transitions. [2020-10-27 00:22:55,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:22:55,721 INFO L276 IsEmpty]: Start isEmpty. Operand 13815 states and 17288 transitions. [2020-10-27 00:22:55,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-27 00:22:55,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:22:55,730 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:22:55,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:22:55,731 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:22:55,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:22:55,731 INFO L82 PathProgramCache]: Analyzing trace with hash -607344208, now seen corresponding path program 1 times [2020-10-27 00:22:55,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:22:55,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194577126] [2020-10-27 00:22:55,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:22:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:55,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:56,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:56,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:58,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:58,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-27 00:22:58,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:22:58,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2483 [2020-10-27 00:22:58,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:58,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:22:58,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:22:58,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:22:58,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:58,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:22:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:58,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:58,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:58,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:22:58,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:58,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:22:58,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:58,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:22:58,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:58,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:22:58,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:58,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:22:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:58,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:58,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:58,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:22:58,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:22:58,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 00:22:58,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:58,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:22:58,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:22:58,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:22:58,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:22:58,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:22:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:22:58,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:58,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:22:59,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:22:59,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:22:59,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:22:59,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-27 00:22:59,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:22:59,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:22:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:22:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:22:59,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:22:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 00:22:59,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194577126] [2020-10-27 00:22:59,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:22:59,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:22:59,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103106195] [2020-10-27 00:22:59,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:22:59,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:22:59,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:22:59,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:22:59,539 INFO L87 Difference]: Start difference. First operand 13815 states and 17288 transitions. Second operand 7 states. [2020-10-27 00:23:13,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:23:13,831 INFO L93 Difference]: Finished difference Result 29251 states and 36542 transitions. [2020-10-27 00:23:13,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:23:13,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 334 [2020-10-27 00:23:13,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:23:13,883 INFO L225 Difference]: With dead ends: 29251 [2020-10-27 00:23:13,883 INFO L226 Difference]: Without dead ends: 15310 [2020-10-27 00:23:13,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:23:13,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15310 states. [2020-10-27 00:23:14,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15310 to 13851. [2020-10-27 00:23:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13851 states. [2020-10-27 00:23:14,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13851 states to 13851 states and 15999 transitions. [2020-10-27 00:23:14,226 INFO L78 Accepts]: Start accepts. Automaton has 13851 states and 15999 transitions. Word has length 334 [2020-10-27 00:23:14,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:23:14,227 INFO L481 AbstractCegarLoop]: Abstraction has 13851 states and 15999 transitions. [2020-10-27 00:23:14,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:23:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 13851 states and 15999 transitions. [2020-10-27 00:23:14,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2020-10-27 00:23:14,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:23:14,240 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:23:14,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:23:14,240 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:23:14,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:23:14,242 INFO L82 PathProgramCache]: Analyzing trace with hash -490962016, now seen corresponding path program 1 times [2020-10-27 00:23:14,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:23:14,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077693215] [2020-10-27 00:23:14,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:23:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:14,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:14,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:14,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:19,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:19,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-27 00:23:19,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:23:19,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 00:23:19,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:19,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:23:19,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:23:19,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-27 00:23:19,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:19,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:23:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:19,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:19,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:19,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:23:19,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:19,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:23:19,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:19,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:23:19,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:19,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:23:19,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:19,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:23:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:19,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:20,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:20,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:23:20,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:20,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 772 [2020-10-27 00:23:20,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:20,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:23:20,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:23:20,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:23:20,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:23:20,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:23:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:20,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:20,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:20,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:23:20,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:20,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:23:20,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:20,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:23:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:23:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:23:20,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:20,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:23:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:20,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:21,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:23:21,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:21,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 00:23:21,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:21,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:23:21,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-27 00:23:21,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:23:21,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:21,264 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 36 proven. 117 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:23:21,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077693215] [2020-10-27 00:23:21,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:23:21,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:23:21,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385579577] [2020-10-27 00:23:21,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:23:21,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:23:21,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:23:21,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:23:21,267 INFO L87 Difference]: Start difference. First operand 13851 states and 15999 transitions. Second operand 7 states. [2020-10-27 00:23:32,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:23:32,192 INFO L93 Difference]: Finished difference Result 33706 states and 39697 transitions. [2020-10-27 00:23:32,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:23:32,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 455 [2020-10-27 00:23:32,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:23:32,265 INFO L225 Difference]: With dead ends: 33706 [2020-10-27 00:23:32,265 INFO L226 Difference]: Without dead ends: 19861 [2020-10-27 00:23:32,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:23:32,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19861 states. [2020-10-27 00:23:32,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19861 to 19802. [2020-10-27 00:23:32,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19802 states. [2020-10-27 00:23:32,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19802 states to 19802 states and 22874 transitions. [2020-10-27 00:23:32,739 INFO L78 Accepts]: Start accepts. Automaton has 19802 states and 22874 transitions. Word has length 455 [2020-10-27 00:23:32,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:23:32,740 INFO L481 AbstractCegarLoop]: Abstraction has 19802 states and 22874 transitions. [2020-10-27 00:23:32,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:23:32,740 INFO L276 IsEmpty]: Start isEmpty. Operand 19802 states and 22874 transitions. [2020-10-27 00:23:32,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2020-10-27 00:23:32,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:23:32,780 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:23:32,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:23:32,780 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:23:32,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:23:32,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1130619650, now seen corresponding path program 1 times [2020-10-27 00:23:32,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:23:32,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708838834] [2020-10-27 00:23:32,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:23:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:33,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:33,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:38,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:38,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1004 [2020-10-27 00:23:38,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:23:38,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 00:23:38,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:38,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:23:38,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:23:38,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:23:38,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:38,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:23:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:38,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:38,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:38,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:23:38,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:38,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:23:38,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:38,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:23:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:23:38,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:23:38,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:23:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:38,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:38,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:38,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:23:38,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:38,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-27 00:23:38,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:38,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:23:38,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:38,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:23:38,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:38,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:23:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:38,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:38,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:38,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:23:38,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:38,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 00:23:38,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:38,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:23:38,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:38,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:23:38,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:38,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:23:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:38,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:38,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:38,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:23:38,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:38,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:23:38,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:38,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:23:38,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:38,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:23:38,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:39,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:23:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:39,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:39,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:39,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:23:39,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:39,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-27 00:23:39,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:23:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:23:39,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:39,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:23:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:39,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:39,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:39,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:23:39,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:39,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:23:39,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:23:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:23:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:23:39,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:39,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:23:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:39,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:39,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:23:39,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:23:39,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:23:39,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-27 00:23:39,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:23:39,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:23:39,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:23:39,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:23:39,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:23:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 300 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:23:40,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708838834] [2020-10-27 00:23:40,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:23:40,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:23:40,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481782977] [2020-10-27 00:23:40,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:23:40,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:23:40,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:23:40,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:23:40,587 INFO L87 Difference]: Start difference. First operand 19802 states and 22874 transitions. Second operand 7 states. [2020-10-27 00:23:57,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:23:57,155 INFO L93 Difference]: Finished difference Result 51217 states and 60738 transitions. [2020-10-27 00:23:57,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:23:57,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 982 [2020-10-27 00:23:57,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:23:57,259 INFO L225 Difference]: With dead ends: 51217 [2020-10-27 00:23:57,259 INFO L226 Difference]: Without dead ends: 31421 [2020-10-27 00:23:57,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:23:57,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31421 states. [2020-10-27 00:23:57,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31421 to 29253. [2020-10-27 00:23:57,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29253 states. [2020-10-27 00:23:57,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29253 states to 29253 states and 33461 transitions. [2020-10-27 00:23:57,959 INFO L78 Accepts]: Start accepts. Automaton has 29253 states and 33461 transitions. Word has length 982 [2020-10-27 00:23:57,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:23:57,962 INFO L481 AbstractCegarLoop]: Abstraction has 29253 states and 33461 transitions. [2020-10-27 00:23:57,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:23:57,963 INFO L276 IsEmpty]: Start isEmpty. Operand 29253 states and 33461 transitions. [2020-10-27 00:23:58,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2020-10-27 00:23:58,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:23:58,016 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:23:58,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:23:58,017 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:23:58,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:23:58,018 INFO L82 PathProgramCache]: Analyzing trace with hash 210238654, now seen corresponding path program 1 times [2020-10-27 00:23:58,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:23:58,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569993586] [2020-10-27 00:23:58,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:23:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:23:58,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:58,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:23:59,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:03,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:03,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1082 [2020-10-27 00:24:03,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:24:03,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-27 00:24:03,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:24:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:24:03,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:03,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:24:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:03,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:03,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:03,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:24:03,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:03,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:24:03,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:03,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:03,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:03,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:03,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:03,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:24:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:03,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:03,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:03,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:24:03,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:03,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 00:24:03,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:03,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:03,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:03,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:03,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:24:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:03,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:03,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:03,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:24:03,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:03,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 00:24:03,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:03,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:04,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:24:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:04,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:04,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:04,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:24:04,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:04,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:24:04,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:04,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:04,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:04,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:04,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:04,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:24:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:04,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:04,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:04,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:24:04,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:04,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 00:24:04,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:04,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:24:04,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:04,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:24:04,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:04,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:24:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:04,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:04,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:04,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:24:04,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:04,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:24:04,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:24:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:24:04,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:04,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:24:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:04,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:04,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:04,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:24:04,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:04,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 00:24:04,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:04,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:04,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:24:04,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:24:04,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:04,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-27 00:24:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:04,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:04,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:04,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:24:04,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:04,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 00:24:04,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:04,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:04,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-27 00:24:04,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:04,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 234 proven. 75 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2020-10-27 00:24:05,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569993586] [2020-10-27 00:24:05,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:24:05,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:24:05,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004063820] [2020-10-27 00:24:05,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:24:05,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:24:05,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:24:05,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:24:05,531 INFO L87 Difference]: Start difference. First operand 29253 states and 33461 transitions. Second operand 7 states. [2020-10-27 00:24:18,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:24:18,381 INFO L93 Difference]: Finished difference Result 71407 states and 82986 transitions. [2020-10-27 00:24:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:24:18,382 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1058 [2020-10-27 00:24:18,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:24:18,513 INFO L225 Difference]: With dead ends: 71407 [2020-10-27 00:24:18,514 INFO L226 Difference]: Without dead ends: 42160 [2020-10-27 00:24:18,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:24:18,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42160 states. [2020-10-27 00:24:19,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42160 to 40726. [2020-10-27 00:24:19,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40726 states. [2020-10-27 00:24:19,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40726 states to 40726 states and 46446 transitions. [2020-10-27 00:24:19,552 INFO L78 Accepts]: Start accepts. Automaton has 40726 states and 46446 transitions. Word has length 1058 [2020-10-27 00:24:19,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:24:19,554 INFO L481 AbstractCegarLoop]: Abstraction has 40726 states and 46446 transitions. [2020-10-27 00:24:19,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:24:19,555 INFO L276 IsEmpty]: Start isEmpty. Operand 40726 states and 46446 transitions. [2020-10-27 00:24:19,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1200 [2020-10-27 00:24:19,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:24:19,582 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:19,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:24:19,583 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:24:19,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:24:19,584 INFO L82 PathProgramCache]: Analyzing trace with hash -233972472, now seen corresponding path program 1 times [2020-10-27 00:24:19,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:24:19,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770207691] [2020-10-27 00:24:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:24:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:19,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:20,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:23,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:24,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:24,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1225 [2020-10-27 00:24:24,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:24:24,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 00:24:24,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:24,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:24,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:24:24,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:24:24,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:25,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:24:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:25,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:25,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:25,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:24:25,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:25,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:24:25,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:25,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:25,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:25,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:25,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:25,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:24:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:25,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:25,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:25,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:24:25,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:25,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 00:24:25,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:25,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:25,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:25,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:25,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:25,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:24:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:25,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:25,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:25,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:24:25,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:24:25,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:25,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:25,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:24:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:25,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:25,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:25,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:24:25,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:25,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:24:25,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:25,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:25,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:25,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:25,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:25,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:24:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:25,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:25,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:25,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:24:25,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:25,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 00:24:25,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:25,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:25,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:25,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:24:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:25,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:25,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:25,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:24:25,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:25,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:24:25,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:25,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:25,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:25,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:25,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:25,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:24:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:25,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:26,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:26,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:24:26,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:26,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 00:24:26,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:24:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:26,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:24:26,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:26,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:24:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:26,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:26,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:26,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:24:26,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:26,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 00:24:26,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:26,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:26,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:24:26,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:24:26,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:26,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2020-10-27 00:24:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:26,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:26,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:26,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:24:26,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:26,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:24:26,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:26,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:26,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 00:24:26,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:26,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 469 proven. 73 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2020-10-27 00:24:27,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770207691] [2020-10-27 00:24:27,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:24:27,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:24:27,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773327135] [2020-10-27 00:24:27,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:24:27,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:24:27,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:24:27,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:24:27,176 INFO L87 Difference]: Start difference. First operand 40726 states and 46446 transitions. Second operand 7 states. [2020-10-27 00:24:39,171 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 00:24:40,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:24:40,781 INFO L93 Difference]: Finished difference Result 94305 states and 109687 transitions. [2020-10-27 00:24:40,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:24:40,783 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1199 [2020-10-27 00:24:40,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:24:40,947 INFO L225 Difference]: With dead ends: 94305 [2020-10-27 00:24:40,947 INFO L226 Difference]: Without dead ends: 53585 [2020-10-27 00:24:41,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:24:41,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53585 states. [2020-10-27 00:24:42,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53585 to 53547. [2020-10-27 00:24:42,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53547 states. [2020-10-27 00:24:42,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53547 states to 53547 states and 62108 transitions. [2020-10-27 00:24:42,216 INFO L78 Accepts]: Start accepts. Automaton has 53547 states and 62108 transitions. Word has length 1199 [2020-10-27 00:24:42,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:24:42,217 INFO L481 AbstractCegarLoop]: Abstraction has 53547 states and 62108 transitions. [2020-10-27 00:24:42,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:24:42,217 INFO L276 IsEmpty]: Start isEmpty. Operand 53547 states and 62108 transitions. [2020-10-27 00:24:42,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1219 [2020-10-27 00:24:42,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:24:42,242 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:42,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:24:42,242 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:24:42,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:24:42,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1363134118, now seen corresponding path program 1 times [2020-10-27 00:24:42,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:24:42,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298226474] [2020-10-27 00:24:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:24:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:43,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:43,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:46,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:47,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:47,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1244 [2020-10-27 00:24:47,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:24:47,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-27 00:24:47,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:24:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 00:24:47,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:48,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:24:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:48,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:48,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:48,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:24:48,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:48,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:24:48,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:48,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:48,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:24:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:48,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:48,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:48,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:24:48,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:48,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 00:24:48,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:48,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:48,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:24:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:48,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:48,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:48,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:24:48,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:48,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 00:24:48,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:48,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:48,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:24:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:48,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:48,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:48,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:24:48,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:48,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:24:48,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:48,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:48,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:24:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:48,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:48,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:48,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:24:48,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:48,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 00:24:48,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:48,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:48,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:48,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:24:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:48,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:48,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:48,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:24:48,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:48,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:24:48,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:48,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:48,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:48,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:48,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:48,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:24:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:49,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:49,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:49,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:24:49,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:49,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 00:24:49,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:49,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:24:49,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:24:49,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:24:49,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:49,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:24:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:49,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:49,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:49,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:24:49,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:49,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 00:24:49,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:49,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:24:49,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:24:49,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:24:49,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:49,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1075 [2020-10-27 00:24:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:24:49,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:24:49,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:24:49,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 00:24:49,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:24:49,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:24:49,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:24:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:24:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-27 00:24:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:24:49,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:24:50,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 373 proven. 89 refuted. 0 times theorem prover too weak. 956 trivial. 0 not checked. [2020-10-27 00:24:50,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298226474] [2020-10-27 00:24:50,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:24:50,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:24:50,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342367953] [2020-10-27 00:24:50,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:24:50,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:24:50,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:24:50,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:24:50,106 INFO L87 Difference]: Start difference. First operand 53547 states and 62108 transitions. Second operand 7 states.