/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:14:38,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:14:38,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:14:38,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:14:38,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:14:38,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:14:38,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:14:38,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:14:38,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:14:38,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:14:38,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:14:38,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:14:38,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:14:38,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:14:38,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:14:38,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:14:38,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:14:38,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:14:38,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:14:38,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:14:38,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:14:38,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:14:38,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:14:38,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:14:38,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:14:38,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:14:38,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:14:38,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:14:38,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:14:38,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:14:38,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:14:38,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:14:38,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:14:38,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:14:38,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:14:38,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:14:38,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:14:38,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:14:38,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:14:38,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:14:38,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:14:38,313 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:14:38,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:14:38,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:14:38,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:14:38,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:14:38,374 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:14:38,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:14:38,375 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:14:38,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:14:38,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:14:38,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:14:38,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:14:38,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:14:38,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:14:38,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:14:38,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:14:38,378 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:14:38,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:14:38,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:14:38,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:14:38,379 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:14:38,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:14:38,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:14:38,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:14:38,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:14:38,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:14:38,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:14:38,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:14:38,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:14:38,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:14:38,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:14:38,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:14:38,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:14:38,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:14:38,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:14:38,882 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:14:38,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label58.c [2020-10-28 13:14:38,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba9e1b53c/cf0b8b8b07934893b4abfe4946f397c9/FLAGef5dfb66c [2020-10-28 13:14:39,890 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:14:39,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label58.c [2020-10-28 13:14:39,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba9e1b53c/cf0b8b8b07934893b4abfe4946f397c9/FLAGef5dfb66c [2020-10-28 13:14:40,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba9e1b53c/cf0b8b8b07934893b4abfe4946f397c9 [2020-10-28 13:14:40,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:14:40,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:14:40,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:14:40,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:14:40,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:14:40,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:14:40" (1/1) ... [2020-10-28 13:14:40,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ade471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:40, skipping insertion in model container [2020-10-28 13:14:40,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:14:40" (1/1) ... [2020-10-28 13:14:40,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:14:40,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:14:40,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:14:41,001 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:14:41,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:14:41,280 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:14:41,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:41 WrapperNode [2020-10-28 13:14:41,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:14:41,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:14:41,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:14:41,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:14:41,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:41" (1/1) ... [2020-10-28 13:14:41,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:41" (1/1) ... [2020-10-28 13:14:41,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:41" (1/1) ... [2020-10-28 13:14:41,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:41" (1/1) ... [2020-10-28 13:14:41,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:41" (1/1) ... [2020-10-28 13:14:41,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:41" (1/1) ... [2020-10-28 13:14:41,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:41" (1/1) ... [2020-10-28 13:14:41,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:14:41,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:14:41,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:14:41,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:14:41,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:14:41,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:14:41,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:14:41,600 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:14:41,600 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:14:41,600 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:14:41,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:14:41,601 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:14:41,601 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:14:41,601 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:14:41,601 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:14:41,601 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:14:41,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:14:41,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:14:41,602 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:14:41,602 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:14:41,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:14:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:14:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:14:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:14:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:14:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:14:45,037 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:14:45,038 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:14:45,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:14:45 BoogieIcfgContainer [2020-10-28 13:14:45,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:14:45,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:14:45,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:14:45,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:14:45,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:14:40" (1/3) ... [2020-10-28 13:14:45,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735ff234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:14:45, skipping insertion in model container [2020-10-28 13:14:45,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:41" (2/3) ... [2020-10-28 13:14:45,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735ff234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:14:45, skipping insertion in model container [2020-10-28 13:14:45,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:14:45" (3/3) ... [2020-10-28 13:14:45,052 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label58.c [2020-10-28 13:14:45,067 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:14:45,074 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:14:45,091 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:14:45,128 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:14:45,129 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:14:45,129 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:14:45,129 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:14:45,129 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:14:45,129 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:14:45,129 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:14:45,130 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:14:45,162 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:14:45,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 13:14:45,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:45,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:45,175 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:45,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:45,183 INFO L82 PathProgramCache]: Analyzing trace with hash 580243343, now seen corresponding path program 1 times [2020-10-28 13:14:45,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:45,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065432534] [2020-10-28 13:14:45,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:45,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:46,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:46,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 13:14:46,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:46,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-10-28 13:14:46,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:46,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:46,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:14:46,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:14:46,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 13:14:46,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 13:14:46,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:46,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:46,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:46,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:46,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:46,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:14:46,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:46,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:14:46,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:14:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:14:46,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065432534] [2020-10-28 13:14:46,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:14:46,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:14:46,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491146859] [2020-10-28 13:14:46,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:14:46,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:46,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:14:46,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:14:46,401 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 5 states. [2020-10-28 13:14:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:58,372 INFO L93 Difference]: Finished difference Result 1522 states and 2792 transitions. [2020-10-28 13:14:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:14:58,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-28 13:14:58,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:58,403 INFO L225 Difference]: With dead ends: 1522 [2020-10-28 13:14:58,403 INFO L226 Difference]: Without dead ends: 1011 [2020-10-28 13:14:58,416 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 [2020-10-28 13:14:58,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-28 13:14:58,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1001. [2020-10-28 13:14:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-10-28 13:14:58,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1380 transitions. [2020-10-28 13:14:58,618 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1380 transitions. Word has length 57 [2020-10-28 13:14:58,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:58,619 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1380 transitions. [2020-10-28 13:14:58,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:14:58,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1380 transitions. [2020-10-28 13:14:58,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 13:14:58,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:58,626 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:14:58,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:14:58,627 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:58,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:58,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1681156359, now seen corresponding path program 1 times [2020-10-28 13:14:58,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:58,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713952755] [2020-10-28 13:14:58,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:58,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:58,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:59,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:01,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:01,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 13:15:01,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:15:01,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3191 [2020-10-28 13:15:01,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:01,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:15:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:15:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:15:01,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:15:02,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:02,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:02,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:02,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:02,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:02,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:15:02,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:02,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:02,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:02,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:02,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:15:02,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:02,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:02,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:02,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:02,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:15:02,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:02,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-28 13:15:02,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:02,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:02,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:15:02,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:15:02,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713952755] [2020-10-28 13:15:02,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:15:02,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:15:02,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350664376] [2020-10-28 13:15:02,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:02,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:02,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:02,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:02,461 INFO L87 Difference]: Start difference. First operand 1001 states and 1380 transitions. Second operand 7 states. [2020-10-28 13:15:11,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:11,578 INFO L93 Difference]: Finished difference Result 2974 states and 4118 transitions. [2020-10-28 13:15:11,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:15:11,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2020-10-28 13:15:11,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:11,596 INFO L225 Difference]: With dead ends: 2974 [2020-10-28 13:15:11,597 INFO L226 Difference]: Without dead ends: 1979 [2020-10-28 13:15:11,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:15:11,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2020-10-28 13:15:11,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1955. [2020-10-28 13:15:11,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1955 states. [2020-10-28 13:15:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 2421 transitions. [2020-10-28 13:15:11,696 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 2421 transitions. Word has length 126 [2020-10-28 13:15:11,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:11,699 INFO L481 AbstractCegarLoop]: Abstraction has 1955 states and 2421 transitions. [2020-10-28 13:15:11,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:15:11,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 2421 transitions. [2020-10-28 13:15:11,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-28 13:15:11,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:11,718 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:15:11,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:15:11,719 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:11,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:11,723 INFO L82 PathProgramCache]: Analyzing trace with hash -2026642552, now seen corresponding path program 1 times [2020-10-28 13:15:11,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:11,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463021635] [2020-10-28 13:15:11,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:11,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:12,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:12,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:13,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:13,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:14,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:16,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:16,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-28 13:15:16,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:15:16,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 13:15:16,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:16,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:15:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:15:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:15:16,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:15:17,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:17,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:17,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:17,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:17,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:17,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:15:17,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:17,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:17,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:17,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:17,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:17,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:17,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:15:17,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:17,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 13:15:17,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:17,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:15:17,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:17,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:15:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:17,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:17,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:17,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:17,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:15:17,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:15:17,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-28 13:15:17,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:17,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:15:17,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 123 proven. 49 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:15:17,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463021635] [2020-10-28 13:15:17,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:15:17,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:15:17,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763547993] [2020-10-28 13:15:17,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:15:17,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:17,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:15:17,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:15:17,744 INFO L87 Difference]: Start difference. First operand 1955 states and 2421 transitions. Second operand 6 states. [2020-10-28 13:15:27,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:27,001 INFO L93 Difference]: Finished difference Result 3961 states and 5156 transitions. [2020-10-28 13:15:27,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:15:27,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 231 [2020-10-28 13:15:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:27,019 INFO L225 Difference]: With dead ends: 3961 [2020-10-28 13:15:27,020 INFO L226 Difference]: Without dead ends: 2630 [2020-10-28 13:15:27,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:15:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2020-10-28 13:15:27,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2613. [2020-10-28 13:15:27,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2020-10-28 13:15:27,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3177 transitions. [2020-10-28 13:15:27,137 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3177 transitions. Word has length 231 [2020-10-28 13:15:27,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:27,139 INFO L481 AbstractCegarLoop]: Abstraction has 2613 states and 3177 transitions. [2020-10-28 13:15:27,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:15:27,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3177 transitions. [2020-10-28 13:15:27,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-28 13:15:27,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:27,147 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:15:27,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:15:27,147 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:27,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:27,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1680351851, now seen corresponding path program 1 times [2020-10-28 13:15:27,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:27,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342535472] [2020-10-28 13:15:27,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:27,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:27,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:27,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:28,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:28,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:30,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:31,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:31,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:32,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:32,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-28 13:15:32,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 13:15:32,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 13:15:32,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:32,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:15:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:15:32,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:32,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:32,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:32,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:32,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:32,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:32,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:15:32,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:32,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:32,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:32,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:32,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:32,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:32,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:15:32,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:32,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 13:15:32,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:32,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:32,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:32,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:32,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:15:32,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:32,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:15:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:32,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:32,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:32,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 13:15:32,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:32,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-28 13:15:32,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:32,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:32,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:32,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:15:32,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:15:33,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342535472] [2020-10-28 13:15:33,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:15:33,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:15:33,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7020719] [2020-10-28 13:15:33,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:33,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:33,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:33,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:33,123 INFO L87 Difference]: Start difference. First operand 2613 states and 3177 transitions. Second operand 7 states. [2020-10-28 13:15:42,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:42,167 INFO L93 Difference]: Finished difference Result 6235 states and 7864 transitions. [2020-10-28 13:15:42,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:15:42,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-28 13:15:42,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:42,190 INFO L225 Difference]: With dead ends: 6235 [2020-10-28 13:15:42,190 INFO L226 Difference]: Without dead ends: 3588 [2020-10-28 13:15:42,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:15:42,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3588 states. [2020-10-28 13:15:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3588 to 3545. [2020-10-28 13:15:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2020-10-28 13:15:42,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4000 transitions. [2020-10-28 13:15:42,317 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4000 transitions. Word has length 275 [2020-10-28 13:15:42,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:42,318 INFO L481 AbstractCegarLoop]: Abstraction has 3545 states and 4000 transitions. [2020-10-28 13:15:42,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:15:42,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4000 transitions. [2020-10-28 13:15:42,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-28 13:15:42,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:42,326 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:15:42,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:15:42,326 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:42,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:42,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1480440661, now seen corresponding path program 1 times [2020-10-28 13:15:42,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:42,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605992531] [2020-10-28 13:15:42,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:42,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:42,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:47,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:47,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-28 13:15:47,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:15:47,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 13:15:47,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:47,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:15:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:15:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:15:47,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:47,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:47,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:47,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:47,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:47,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:47,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:15:47,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:47,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:15:47,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:47,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:47,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:48,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:48,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:15:48,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:48,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-28 13:15:48,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:48,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:48,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:48,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:48,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:15:48,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:48,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 13:15:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:48,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:48,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:48,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:15:48,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:48,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:15:48,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:48,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 13:15:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:48,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:49,131 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 98 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:15:49,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605992531] [2020-10-28 13:15:49,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:15:49,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:15:49,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301421665] [2020-10-28 13:15:49,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:49,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:49,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:49,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:49,134 INFO L87 Difference]: Start difference. First operand 3545 states and 4000 transitions. Second operand 7 states. [2020-10-28 13:15:58,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:58,107 INFO L93 Difference]: Finished difference Result 7458 states and 8447 transitions. [2020-10-28 13:15:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:15:58,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 342 [2020-10-28 13:15:58,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:58,131 INFO L225 Difference]: With dead ends: 7458 [2020-10-28 13:15:58,131 INFO L226 Difference]: Without dead ends: 4226 [2020-10-28 13:15:58,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:15:58,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2020-10-28 13:15:58,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4181. [2020-10-28 13:15:58,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4181 states. [2020-10-28 13:15:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4181 states to 4181 states and 4679 transitions. [2020-10-28 13:15:58,278 INFO L78 Accepts]: Start accepts. Automaton has 4181 states and 4679 transitions. Word has length 342 [2020-10-28 13:15:58,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:58,279 INFO L481 AbstractCegarLoop]: Abstraction has 4181 states and 4679 transitions. [2020-10-28 13:15:58,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:15:58,279 INFO L276 IsEmpty]: Start isEmpty. Operand 4181 states and 4679 transitions. [2020-10-28 13:15:58,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-10-28 13:15:58,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:58,289 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:15:58,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:15:58,289 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:58,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:58,290 INFO L82 PathProgramCache]: Analyzing trace with hash 42374380, now seen corresponding path program 1 times [2020-10-28 13:15:58,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:58,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933972439] [2020-10-28 13:15:58,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:58,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:59,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:00,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:00,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-10-28 13:16:00,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:16:00,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2141 [2020-10-28 13:16:00,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:00,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:16:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 13:16:00,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:00,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:00,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:00,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:00,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:00,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:00,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:16:00,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:00,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:00,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:00,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:00,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:01,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:01,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:16:01,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:01,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-28 13:16:01,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:01,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:16:01,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:16:01,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:16:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:01,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:01,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:01,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:16:01,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 13:16:01,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:01,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:16:01,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:16:02,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933972439] [2020-10-28 13:16:02,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:02,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:16:02,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885339872] [2020-10-28 13:16:02,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:16:02,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:02,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:16:02,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:16:02,015 INFO L87 Difference]: Start difference. First operand 4181 states and 4679 transitions. Second operand 8 states. [2020-10-28 13:16:13,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:13,748 INFO L93 Difference]: Finished difference Result 11259 states and 13219 transitions. [2020-10-28 13:16:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:16:13,750 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 416 [2020-10-28 13:16:13,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:13,785 INFO L225 Difference]: With dead ends: 11259 [2020-10-28 13:16:13,785 INFO L226 Difference]: Without dead ends: 7391 [2020-10-28 13:16:13,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:16:13,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7391 states. [2020-10-28 13:16:13,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 7050. [2020-10-28 13:16:13,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7050 states. [2020-10-28 13:16:14,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7050 states to 7050 states and 8052 transitions. [2020-10-28 13:16:14,014 INFO L78 Accepts]: Start accepts. Automaton has 7050 states and 8052 transitions. Word has length 416 [2020-10-28 13:16:14,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:14,015 INFO L481 AbstractCegarLoop]: Abstraction has 7050 states and 8052 transitions. [2020-10-28 13:16:14,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:16:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 7050 states and 8052 transitions. [2020-10-28 13:16:14,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2020-10-28 13:16:14,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:14,032 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:14,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:16:14,033 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:14,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:14,033 INFO L82 PathProgramCache]: Analyzing trace with hash -844145643, now seen corresponding path program 1 times [2020-10-28 13:16:14,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:14,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358271218] [2020-10-28 13:16:14,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:14,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:14,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:16,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:16,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:19,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:19,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 537 [2020-10-28 13:16:19,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:16:19,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 13:16:19,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:19,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:19,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:16:19,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 13:16:19,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:16:19,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:19,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:19,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:19,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:19,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:19,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:19,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:16:19,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:19,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:19,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:19,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:19,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:19,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:19,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:16:19,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:16:19,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:19,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:19,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:19,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:16:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:19,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:19,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:19,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:16:19,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:19,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:16:19,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:19,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:16:19,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:19,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-28 13:16:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:19,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:19,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:19,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:16:19,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:19,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:16:19,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:19,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:16:19,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 252 proven. 50 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 13:16:20,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358271218] [2020-10-28 13:16:20,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:20,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:16:20,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815754477] [2020-10-28 13:16:20,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:16:20,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:20,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:16:20,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:16:20,091 INFO L87 Difference]: Start difference. First operand 7050 states and 8052 transitions. Second operand 6 states. [2020-10-28 13:16:29,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:29,701 INFO L93 Difference]: Finished difference Result 15790 states and 18538 transitions. [2020-10-28 13:16:29,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:16:29,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 521 [2020-10-28 13:16:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:29,767 INFO L225 Difference]: With dead ends: 15790 [2020-10-28 13:16:29,767 INFO L226 Difference]: Without dead ends: 9984 [2020-10-28 13:16:29,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:16:29,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9984 states. [2020-10-28 13:16:30,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9984 to 9947. [2020-10-28 13:16:30,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9947 states. [2020-10-28 13:16:30,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9947 states to 9947 states and 11617 transitions. [2020-10-28 13:16:30,059 INFO L78 Accepts]: Start accepts. Automaton has 9947 states and 11617 transitions. Word has length 521 [2020-10-28 13:16:30,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:30,060 INFO L481 AbstractCegarLoop]: Abstraction has 9947 states and 11617 transitions. [2020-10-28 13:16:30,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:16:30,061 INFO L276 IsEmpty]: Start isEmpty. Operand 9947 states and 11617 transitions. [2020-10-28 13:16:30,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2020-10-28 13:16:30,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:30,091 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:30,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:16:30,092 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:30,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:30,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1824631462, now seen corresponding path program 1 times [2020-10-28 13:16:30,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:30,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098047398] [2020-10-28 13:16:30,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:30,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:30,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:31,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:32,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:33,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:35,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:35,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 636 [2020-10-28 13:16:35,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:16:35,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 13:16:35,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:35,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:16:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 13:16:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-28 13:16:35,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:35,570 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:16:35,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:35,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:35,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:35,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:35,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:35,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:16:35,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:35,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:35,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:35,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:35,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:35,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:35,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:35,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:35,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:35,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:16:35,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:35,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 13:16:35,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:35,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:35,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:35,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:35,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:35,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:35,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:16:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:35,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:35,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:35,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:16:35,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:35,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:16:35,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:35,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:35,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:35,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:35,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:16:35,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:35,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-28 13:16:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:35,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:36,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:36,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:36,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 13:16:36,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:16:36,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-28 13:16:36,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:36,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-28 13:16:36,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:36,641 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 383 proven. 50 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 13:16:36,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098047398] [2020-10-28 13:16:36,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:36,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:16:36,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723694631] [2020-10-28 13:16:36,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:16:36,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:36,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:16:36,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:16:36,644 INFO L87 Difference]: Start difference. First operand 9947 states and 11617 transitions. Second operand 6 states. [2020-10-28 13:16:38,356 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:16:44,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:44,186 INFO L93 Difference]: Finished difference Result 23388 states and 28032 transitions. [2020-10-28 13:16:44,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:16:44,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 620 [2020-10-28 13:16:44,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:44,235 INFO L225 Difference]: With dead ends: 23388 [2020-10-28 13:16:44,235 INFO L226 Difference]: Without dead ends: 13118 [2020-10-28 13:16:44,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:16:44,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13118 states. [2020-10-28 13:16:44,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13118 to 13084. [2020-10-28 13:16:44,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13084 states. [2020-10-28 13:16:44,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13084 states to 13084 states and 15156 transitions. [2020-10-28 13:16:44,564 INFO L78 Accepts]: Start accepts. Automaton has 13084 states and 15156 transitions. Word has length 620 [2020-10-28 13:16:44,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:44,566 INFO L481 AbstractCegarLoop]: Abstraction has 13084 states and 15156 transitions. [2020-10-28 13:16:44,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:16:44,566 INFO L276 IsEmpty]: Start isEmpty. Operand 13084 states and 15156 transitions. [2020-10-28 13:16:44,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 712 [2020-10-28 13:16:44,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:44,589 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:16:44,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:16:44,590 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:44,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:44,591 INFO L82 PathProgramCache]: Analyzing trace with hash 896372901, now seen corresponding path program 1 times [2020-10-28 13:16:44,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:44,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050249184] [2020-10-28 13:16:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:44,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:45,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:45,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:49,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:49,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 729 [2020-10-28 13:16:49,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:16:49,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-28 13:16:49,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:49,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:49,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:49,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 489 [2020-10-28 13:16:49,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-28 13:16:49,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:50,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:50,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:50,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:50,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:50,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:50,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:16:50,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:50,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:50,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:50,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:50,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:50,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:50,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:50,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:50,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:50,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:16:50,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:50,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:16:50,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:50,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:50,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:50,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:16:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:50,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:50,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:50,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:16:50,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:50,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:16:50,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:50,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:50,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:50,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-28 13:16:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:50,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:50,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:50,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:16:50,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:50,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:16:50,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:50,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:50,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:50,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:50,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:16:50,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:50,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-28 13:16:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:50,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:50,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:50,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 13:16:50,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:50,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-28 13:16:50,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:50,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-28 13:16:50,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:51,411 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 575 proven. 2 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-28 13:16:51,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050249184] [2020-10-28 13:16:51,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:51,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:16:51,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656494443] [2020-10-28 13:16:51,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:16:51,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:51,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:16:51,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:16:51,414 INFO L87 Difference]: Start difference. First operand 13084 states and 15156 transitions. Second operand 7 states. [2020-10-28 13:16:59,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:59,282 INFO L93 Difference]: Finished difference Result 25960 states and 30228 transitions. [2020-10-28 13:16:59,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:16:59,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 711 [2020-10-28 13:16:59,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:59,332 INFO L225 Difference]: With dead ends: 25960 [2020-10-28 13:16:59,333 INFO L226 Difference]: Without dead ends: 13189 [2020-10-28 13:16:59,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:16:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13189 states. [2020-10-28 13:16:59,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13189 to 13129. [2020-10-28 13:16:59,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13129 states. [2020-10-28 13:16:59,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13129 states to 13129 states and 15145 transitions. [2020-10-28 13:16:59,678 INFO L78 Accepts]: Start accepts. Automaton has 13129 states and 15145 transitions. Word has length 711 [2020-10-28 13:16:59,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:59,680 INFO L481 AbstractCegarLoop]: Abstraction has 13129 states and 15145 transitions. [2020-10-28 13:16:59,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:16:59,680 INFO L276 IsEmpty]: Start isEmpty. Operand 13129 states and 15145 transitions. [2020-10-28 13:16:59,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2020-10-28 13:16:59,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:59,708 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:59,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:16:59,709 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:59,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:59,709 INFO L82 PathProgramCache]: Analyzing trace with hash -304753367, now seen corresponding path program 1 times [2020-10-28 13:16:59,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:59,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782298381] [2020-10-28 13:16:59,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:59,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:00,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:00,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:04,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:04,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 734 [2020-10-28 13:17:04,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:17:04,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-28 13:17:04,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:04,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:04,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:17:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:17:04,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:05,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:05,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:05,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:05,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:05,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:05,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:17:05,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:05,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:05,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:05,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:05,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:05,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:17:05,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:05,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-28 13:17:05,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:05,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:05,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:05,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:05,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:17:05,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:05,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:17:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:05,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:05,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:17:05,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:05,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 13:17:05,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:05,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:05,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:05,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:05,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:17:05,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:05,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-28 13:17:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:05,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:05,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:05,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 13:17:05,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:05,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:17:05,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:05,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-28 13:17:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:05,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:05,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-10-28 13:17:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:06,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:06,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:06,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 13:17:06,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:06,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 13:17:06,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:06,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-10-28 13:17:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:06,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:06,875 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 312 proven. 213 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2020-10-28 13:17:06,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782298381] [2020-10-28 13:17:06,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:06,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:17:06,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805369580] [2020-10-28 13:17:06,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:17:06,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:06,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:17:06,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:17:06,877 INFO L87 Difference]: Start difference. First operand 13129 states and 15145 transitions. Second operand 8 states. [2020-10-28 13:17:16,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:16,921 INFO L93 Difference]: Finished difference Result 27263 states and 31445 transitions. [2020-10-28 13:17:16,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:17:16,926 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 716 [2020-10-28 13:17:16,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:16,975 INFO L225 Difference]: With dead ends: 27263 [2020-10-28 13:17:16,975 INFO L226 Difference]: Without dead ends: 14136 [2020-10-28 13:17:17,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:17:17,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14136 states. [2020-10-28 13:17:17,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14136 to 14076. [2020-10-28 13:17:17,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14076 states. [2020-10-28 13:17:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14076 states to 14076 states and 16110 transitions. [2020-10-28 13:17:17,319 INFO L78 Accepts]: Start accepts. Automaton has 14076 states and 16110 transitions. Word has length 716 [2020-10-28 13:17:17,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:17,321 INFO L481 AbstractCegarLoop]: Abstraction has 14076 states and 16110 transitions. [2020-10-28 13:17:17,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:17:17,321 INFO L276 IsEmpty]: Start isEmpty. Operand 14076 states and 16110 transitions. [2020-10-28 13:17:17,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2020-10-28 13:17:17,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:17,351 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:17:17,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:17:17,352 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:17,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:17,352 INFO L82 PathProgramCache]: Analyzing trace with hash -355383759, now seen corresponding path program 1 times [2020-10-28 13:17:17,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:17,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479003043] [2020-10-28 13:17:17,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:17,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:17,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:20,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:21,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:22,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:22,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 746 [2020-10-28 13:17:22,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:17:22,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 13:17:22,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:22,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 517 [2020-10-28 13:17:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-28 13:17:22,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:22,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:22,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:22,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:22,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:22,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:22,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:17:22,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:22,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:22,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:22,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:22,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:22,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:17:22,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:22,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:17:22,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:22,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:22,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:22,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:22,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:22,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:23,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:17:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:23,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:23,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:23,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:17:23,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:23,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:17:23,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:23,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:23,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:23,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:23,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:23,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:23,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:17:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:23,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:23,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:23,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 13:17:23,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:23,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-28 13:17:23,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:23,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:23,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:23,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:23,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 13:17:23,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:23,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-10-28 13:17:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:23,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:23,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:23,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 13:17:23,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:23,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 13:17:23,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:23,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-28 13:17:23,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:23,896 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 582 proven. 2 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2020-10-28 13:17:23,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479003043] [2020-10-28 13:17:23,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:23,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:17:23,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144347944] [2020-10-28 13:17:23,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:17:23,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:23,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:17:23,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:17:23,898 INFO L87 Difference]: Start difference. First operand 14076 states and 16110 transitions. Second operand 7 states. [2020-10-28 13:17:36,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:36,679 INFO L93 Difference]: Finished difference Result 30760 states and 35950 transitions. [2020-10-28 13:17:36,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:17:36,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 728 [2020-10-28 13:17:36,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:36,744 INFO L225 Difference]: With dead ends: 30760 [2020-10-28 13:17:36,744 INFO L226 Difference]: Without dead ends: 16983 [2020-10-28 13:17:36,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:17:36,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16983 states. [2020-10-28 13:17:37,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16983 to 16955. [2020-10-28 13:17:37,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16955 states. [2020-10-28 13:17:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16955 states to 16955 states and 19762 transitions. [2020-10-28 13:17:37,160 INFO L78 Accepts]: Start accepts. Automaton has 16955 states and 19762 transitions. Word has length 728 [2020-10-28 13:17:37,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:37,161 INFO L481 AbstractCegarLoop]: Abstraction has 16955 states and 19762 transitions. [2020-10-28 13:17:37,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:17:37,161 INFO L276 IsEmpty]: Start isEmpty. Operand 16955 states and 19762 transitions. [2020-10-28 13:17:37,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2020-10-28 13:17:37,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:37,194 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:17:37,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:17:37,194 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:37,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:37,195 INFO L82 PathProgramCache]: Analyzing trace with hash 855099837, now seen corresponding path program 1 times [2020-10-28 13:17:37,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:37,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032705716] [2020-10-28 13:17:37,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:37,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:37,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:38,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:41,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:42,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:42,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 749 [2020-10-28 13:17:42,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:17:42,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-28 13:17:42,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:42,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:17:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 568 [2020-10-28 13:17:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-28 13:17:42,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:42,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:42,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:42,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:42,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:42,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:42,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:17:42,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:42,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:42,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:42,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:42,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:42,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:42,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:17:42,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:42,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 13:17:42,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:42,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:42,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:42,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:17:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:42,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:42,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:42,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:17:42,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:42,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:17:42,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:42,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:42,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:42,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:42,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2020-10-28 13:17:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:42,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:43,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:43,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:17:43,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:43,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:17:43,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:43,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:43,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:43,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:17:43,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:43,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2020-10-28 13:17:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:43,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:43,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:43,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 13:17:43,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:43,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:17:43,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:43,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:43,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 13:17:43,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 460 proven. 51 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2020-10-28 13:17:43,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032705716] [2020-10-28 13:17:43,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:43,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:17:43,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572792136] [2020-10-28 13:17:43,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:17:43,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:43,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:17:43,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:17:43,620 INFO L87 Difference]: Start difference. First operand 16955 states and 19762 transitions. Second operand 6 states. [2020-10-28 13:17:52,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:52,131 INFO L93 Difference]: Finished difference Result 38152 states and 45077 transitions. [2020-10-28 13:17:52,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:17:52,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 731 [2020-10-28 13:17:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:52,209 INFO L225 Difference]: With dead ends: 38152 [2020-10-28 13:17:52,209 INFO L226 Difference]: Without dead ends: 22754 [2020-10-28 13:17:52,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:17:52,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22754 states. [2020-10-28 13:17:52,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22754 to 16951. [2020-10-28 13:17:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16951 states. [2020-10-28 13:17:52,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16951 states to 16951 states and 19744 transitions. [2020-10-28 13:17:52,673 INFO L78 Accepts]: Start accepts. Automaton has 16951 states and 19744 transitions. Word has length 731 [2020-10-28 13:17:52,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:52,674 INFO L481 AbstractCegarLoop]: Abstraction has 16951 states and 19744 transitions. [2020-10-28 13:17:52,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:17:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 16951 states and 19744 transitions. [2020-10-28 13:17:52,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2020-10-28 13:17:52,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:52,701 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:17:52,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:17:52,702 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:52,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:52,702 INFO L82 PathProgramCache]: Analyzing trace with hash -929431587, now seen corresponding path program 1 times [2020-10-28 13:17:52,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:52,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160228323] [2020-10-28 13:17:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:53,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:53,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:53,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:54,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:57,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:57,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 751 [2020-10-28 13:17:57,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:17:57,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 13:17:57,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:57,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 530 [2020-10-28 13:17:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:17:57,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:58,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:58,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:58,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:58,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:58,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:58,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:17:58,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:58,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:58,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:58,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:58,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:58,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:58,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:58,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:58,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:58,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:17:58,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:58,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 13:17:58,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:58,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:58,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:58,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:58,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:58,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:58,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:17:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:58,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:58,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:58,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:17:58,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:58,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:17:58,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:58,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:58,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:58,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:58,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:58,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:58,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:17:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:58,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:58,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:58,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 13:17:58,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:58,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:17:58,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:58,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:58,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:17:58,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:58,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2020-10-28 13:17:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:58,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:58,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:58,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 13:17:58,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:58,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-28 13:17:58,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:58,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 13:17:58,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 585 proven. 2 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-28 13:17:59,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160228323] [2020-10-28 13:17:59,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:59,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:17:59,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511999611] [2020-10-28 13:17:59,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:17:59,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:59,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:17:59,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:17:59,223 INFO L87 Difference]: Start difference. First operand 16951 states and 19744 transitions. Second operand 7 states. [2020-10-28 13:18:10,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:10,338 INFO L93 Difference]: Finished difference Result 43529 states and 51818 transitions. [2020-10-28 13:18:10,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:18:10,340 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 733 [2020-10-28 13:18:10,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:10,428 INFO L225 Difference]: With dead ends: 43529 [2020-10-28 13:18:10,429 INFO L226 Difference]: Without dead ends: 28135 [2020-10-28 13:18:10,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:18:10,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28135 states. [2020-10-28 13:18:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28135 to 25311. [2020-10-28 13:18:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25311 states. [2020-10-28 13:18:10,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25311 states to 25311 states and 30402 transitions. [2020-10-28 13:18:11,000 INFO L78 Accepts]: Start accepts. Automaton has 25311 states and 30402 transitions. Word has length 733 [2020-10-28 13:18:11,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:11,001 INFO L481 AbstractCegarLoop]: Abstraction has 25311 states and 30402 transitions. [2020-10-28 13:18:11,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:18:11,002 INFO L276 IsEmpty]: Start isEmpty. Operand 25311 states and 30402 transitions. [2020-10-28 13:18:11,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2020-10-28 13:18:11,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:11,038 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:18:11,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:18:11,038 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:11,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:11,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1508664745, now seen corresponding path program 1 times [2020-10-28 13:18:11,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:11,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92760187] [2020-10-28 13:18:11,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:11,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:11,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:12,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:15,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:15,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:16,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:16,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 763 [2020-10-28 13:18:16,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:18:16,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-28 13:18:16,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:16,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:18:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 501 [2020-10-28 13:18:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-28 13:18:16,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:16,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:16,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:16,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:16,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:16,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:16,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:18:16,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:16,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:16,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:16,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:18:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:16,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:16,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:16,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:18:16,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:16,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:18:16,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:16,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:16,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:16,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:18:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:16,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:16,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:16,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:18:16,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:16,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:18:16,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:16,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:16,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:16,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:16,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:16,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:16,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:18:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:16,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:17,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:17,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:18:17,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:17,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:18:17,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:17,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:18:17,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:17,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-28 13:18:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:17,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:17,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:17,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:17,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:18:17,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:18:17,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-10-28 13:18:17,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:17,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:18:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:18:17,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:18,068 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 542 proven. 51 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-10-28 13:18:18,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92760187] [2020-10-28 13:18:18,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:18:18,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:18:18,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568850736] [2020-10-28 13:18:18,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:18:18,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:18:18,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:18:18,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:18:18,070 INFO L87 Difference]: Start difference. First operand 25311 states and 30402 transitions. Second operand 6 states. [2020-10-28 13:18:18,201 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 63