/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:42:25,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:42:25,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:42:25,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:42:25,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:42:25,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:42:25,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:42:25,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:42:25,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:42:25,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:42:25,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:42:25,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:42:25,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:42:25,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:42:25,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:42:25,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:42:25,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:42:25,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:42:25,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:42:25,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:42:25,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:42:25,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:42:25,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:42:25,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:42:25,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:42:25,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:42:25,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:42:25,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:42:25,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:42:25,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:42:25,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:42:25,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:42:25,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:42:25,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:42:25,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:42:25,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:42:25,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:42:25,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:42:25,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:42:25,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:42:25,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:42:25,413 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 06:42:25,441 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:42:25,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:42:25,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:42:25,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:42:25,443 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:42:25,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:42:25,444 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:42:25,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:42:25,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:42:25,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:42:25,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:42:25,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:42:25,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:42:25,445 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:42:25,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:42:25,446 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:42:25,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:42:25,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:42:25,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:42:25,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:42:25,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:42:25,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:42:25,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:42:25,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:42:25,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:42:25,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:42:25,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:42:25,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:42:25,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:42:25,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:42:25,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:42:25,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:42:25,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:42:25,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:42:25,990 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:42:25,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label05.c [2020-10-29 06:42:26,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa00d9c74/7103cfdfeb324b8abc73f179e231c045/FLAGb8da79601 [2020-10-29 06:42:26,862 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:42:26,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label05.c [2020-10-29 06:42:26,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa00d9c74/7103cfdfeb324b8abc73f179e231c045/FLAGb8da79601 [2020-10-29 06:42:27,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa00d9c74/7103cfdfeb324b8abc73f179e231c045 [2020-10-29 06:42:27,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:42:27,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:42:27,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:42:27,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:42:27,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:42:27,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:42:27" (1/1) ... [2020-10-29 06:42:27,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28be5bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:27, skipping insertion in model container [2020-10-29 06:42:27,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:42:27" (1/1) ... [2020-10-29 06:42:27,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:42:27,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:42:27,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:42:27,923 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:42:28,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:42:28,136 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:42:28,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:28 WrapperNode [2020-10-29 06:42:28,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:42:28,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:42:28,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:42:28,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:42:28,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:28" (1/1) ... [2020-10-29 06:42:28,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:28" (1/1) ... [2020-10-29 06:42:28,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:28" (1/1) ... [2020-10-29 06:42:28,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:28" (1/1) ... [2020-10-29 06:42:28,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:28" (1/1) ... [2020-10-29 06:42:28,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:28" (1/1) ... [2020-10-29 06:42:28,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:28" (1/1) ... [2020-10-29 06:42:28,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:42:28,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:42:28,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:42:28,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:42:28,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:42:28,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:42:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:42:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:42:28,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:42:28,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:42:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:42:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:42:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:42:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:42:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:42:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:42:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:42:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:42:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:42:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:42:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:42:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:42:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:42:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:42:30,601 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:42:30,602 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:42:30,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:42:30 BoogieIcfgContainer [2020-10-29 06:42:30,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:42:30,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:42:30,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:42:30,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:42:30,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:42:27" (1/3) ... [2020-10-29 06:42:30,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502eef1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:42:30, skipping insertion in model container [2020-10-29 06:42:30,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:42:28" (2/3) ... [2020-10-29 06:42:30,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502eef1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:42:30, skipping insertion in model container [2020-10-29 06:42:30,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:42:30" (3/3) ... [2020-10-29 06:42:30,616 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label05.c [2020-10-29 06:42:30,628 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:42:30,634 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:42:30,648 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:42:30,678 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:42:30,678 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:42:30,678 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:42:30,679 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:42:30,679 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:42:30,679 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:42:30,679 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:42:30,679 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:42:30,703 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-29 06:42:30,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 06:42:30,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:42:30,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:42:30,715 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:42:30,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:42:30,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1347390814, now seen corresponding path program 1 times [2020-10-29 06:42:30,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:42:30,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671703431] [2020-10-29 06:42:30,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:42:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:42:31,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:31,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:42:31,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:42:31,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:42:31,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-29 06:42:31,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:42:31,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:42:31,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:42:31,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:42:31,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 06:42:31,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:42:31,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:42:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:42:31,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:31,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:42:31,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:42:31,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:42:31,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 06:42:31,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:42:31,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:42:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:42:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:42:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:42:31,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:42:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:42:31,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671703431] [2020-10-29 06:42:31,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:42:31,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 06:42:31,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102733983] [2020-10-29 06:42:31,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:42:31,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:42:31,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:42:31,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:42:31,891 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 5 states. [2020-10-29 06:42:36,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:42:36,858 INFO L93 Difference]: Finished difference Result 997 states and 1783 transitions. [2020-10-29 06:42:36,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:42:36,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-29 06:42:36,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:42:36,881 INFO L225 Difference]: With dead ends: 997 [2020-10-29 06:42:36,881 INFO L226 Difference]: Without dead ends: 631 [2020-10-29 06:42:36,894 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 [2020-10-29 06:42:36,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-10-29 06:42:37,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 625. [2020-10-29 06:42:37,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-10-29 06:42:37,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 865 transitions. [2020-10-29 06:42:37,032 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 865 transitions. Word has length 71 [2020-10-29 06:42:37,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:42:37,033 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 865 transitions. [2020-10-29 06:42:37,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:42:37,033 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 865 transitions. [2020-10-29 06:42:37,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-29 06:42:37,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:42:37,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:42:37,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:42:37,049 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:42:37,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:42:37,050 INFO L82 PathProgramCache]: Analyzing trace with hash -994792381, now seen corresponding path program 1 times [2020-10-29 06:42:37,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:42:37,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445725574] [2020-10-29 06:42:37,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:42:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:42:37,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:37,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:38,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:39,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:42:39,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 06:42:39,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:42:39,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2247 [2020-10-29 06:42:39,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:42:39,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:42:39,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:42:39,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 06:42:39,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:42:39,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:42:39,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:42:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:42:39,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:39,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:42:39,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:42:39,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:42:39,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:42:39,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:42:39,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:42:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:42:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:42:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:42:39,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:42:39,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:42:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:42:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:39,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:42:39,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:42:39,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:42:39,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 06:42:39,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:42:39,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:42:39,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:42:39,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:42:39,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 06:42:39,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:42:39,770 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:42:39,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445725574] [2020-10-29 06:42:39,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:42:39,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:42:39,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769887681] [2020-10-29 06:42:39,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:42:39,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:42:39,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:42:39,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:42:39,779 INFO L87 Difference]: Start difference. First operand 625 states and 865 transitions. Second operand 5 states. [2020-10-29 06:42:42,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:42:42,960 INFO L93 Difference]: Finished difference Result 1840 states and 2579 transitions. [2020-10-29 06:42:42,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:42:42,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-29 06:42:42,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:42:42,972 INFO L225 Difference]: With dead ends: 1840 [2020-10-29 06:42:42,972 INFO L226 Difference]: Without dead ends: 1221 [2020-10-29 06:42:42,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:42:42,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2020-10-29 06:42:43,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1201. [2020-10-29 06:42:43,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1201 states. [2020-10-29 06:42:43,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1561 transitions. [2020-10-29 06:42:43,043 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1561 transitions. Word has length 143 [2020-10-29 06:42:43,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:42:43,044 INFO L481 AbstractCegarLoop]: Abstraction has 1201 states and 1561 transitions. [2020-10-29 06:42:43,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:42:43,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1561 transitions. [2020-10-29 06:42:43,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 06:42:43,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:42:43,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:42:43,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:42:43,049 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:42:43,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:42:43,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1409907207, now seen corresponding path program 1 times [2020-10-29 06:42:43,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:42:43,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020469473] [2020-10-29 06:42:43,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:42:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:42:43,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:43,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:43,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:45,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:42:45,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 06:42:45,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:42:45,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1927 [2020-10-29 06:42:45,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:42:45,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:42:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:42:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 06:42:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:42:45,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:42:45,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:42:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:42:45,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:45,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:42:45,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:42:45,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:42:45,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:42:45,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:42:45,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:42:45,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:42:45,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:42:45,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:42:45,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:42:45,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:42:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:42:45,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:45,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:42:45,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:42:45,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:42:45,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-29 06:42:45,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:42:45,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:42:45,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:42:45,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:42:45,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:42:45,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:42:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:42:45,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020469473] [2020-10-29 06:42:45,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:42:45,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:42:45,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864562825] [2020-10-29 06:42:45,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:42:45,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:42:45,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:42:45,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:42:45,483 INFO L87 Difference]: Start difference. First operand 1201 states and 1561 transitions. Second operand 5 states. [2020-10-29 06:42:48,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:42:48,657 INFO L93 Difference]: Finished difference Result 3549 states and 4689 transitions. [2020-10-29 06:42:48,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:42:48,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-29 06:42:48,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:42:48,675 INFO L225 Difference]: With dead ends: 3549 [2020-10-29 06:42:48,675 INFO L226 Difference]: Without dead ends: 2354 [2020-10-29 06:42:48,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:42:48,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2020-10-29 06:42:48,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 2350. [2020-10-29 06:42:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2350 states. [2020-10-29 06:42:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 2942 transitions. [2020-10-29 06:42:48,768 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 2942 transitions. Word has length 145 [2020-10-29 06:42:48,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:42:48,769 INFO L481 AbstractCegarLoop]: Abstraction has 2350 states and 2942 transitions. [2020-10-29 06:42:48,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:42:48,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 2942 transitions. [2020-10-29 06:42:48,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 06:42:48,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:42:48,774 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:42:48,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:42:48,774 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:42:48,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:42:48,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1884988243, now seen corresponding path program 1 times [2020-10-29 06:42:48,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:42:48,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740594431] [2020-10-29 06:42:48,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:42:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:42:48,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:48,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:49,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:50,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:50,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:42:50,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 06:42:50,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:42:50,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2009 [2020-10-29 06:42:50,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:42:50,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:42:50,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:42:50,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:42:50,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 06:42:50,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:42:50,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:42:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:42:51,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:51,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:42:51,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:42:51,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:42:51,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 06:42:51,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:42:51,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:42:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:42:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:42:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:42:51,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:42:51,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:42:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:42:51,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:51,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:51,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:42:51,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:42:51,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:42:51,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-29 06:42:51,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:42:51,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:42:51,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:42:51,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:42:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:42:51,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:42:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:42:51,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740594431] [2020-10-29 06:42:51,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:42:51,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:42:51,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836916585] [2020-10-29 06:42:51,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:42:51,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:42:51,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:42:51,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:42:51,413 INFO L87 Difference]: Start difference. First operand 2350 states and 2942 transitions. Second operand 7 states. [2020-10-29 06:42:55,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:42:55,455 INFO L93 Difference]: Finished difference Result 5500 states and 7092 transitions. [2020-10-29 06:42:55,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:42:55,456 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-10-29 06:42:55,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:42:55,475 INFO L225 Difference]: With dead ends: 5500 [2020-10-29 06:42:55,475 INFO L226 Difference]: Without dead ends: 3156 [2020-10-29 06:42:55,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:42:55,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2020-10-29 06:42:55,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 3144. [2020-10-29 06:42:55,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3144 states. [2020-10-29 06:42:55,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 3918 transitions. [2020-10-29 06:42:55,587 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 3918 transitions. Word has length 151 [2020-10-29 06:42:55,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:42:55,588 INFO L481 AbstractCegarLoop]: Abstraction has 3144 states and 3918 transitions. [2020-10-29 06:42:55,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:42:55,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 3918 transitions. [2020-10-29 06:42:55,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-29 06:42:55,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:42:55,596 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:42:55,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:42:55,596 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:42:55,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:42:55,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1862732380, now seen corresponding path program 1 times [2020-10-29 06:42:55,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:42:55,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067376087] [2020-10-29 06:42:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:42:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:42:55,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:55,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:55,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:56,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:42:57,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:00,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:00,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-29 06:43:00,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:43:00,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 06:43:00,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:00,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:43:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:43:00,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-29 06:43:00,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:00,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:00,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:00,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:00,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:00,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:00,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 06:43:00,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:00,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:00,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:00,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:00,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:43:00,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:00,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:00,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:00,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:01,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:01,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:43:01,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:43:01,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 06:43:01,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:01,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 06:43:01,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:43:01,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 06:43:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:01,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:01,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:01,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:43:01,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:01,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 06:43:01,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:01,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:01,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:01,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:43:01,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 06:43:01,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 06:43:01,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067376087] [2020-10-29 06:43:01,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:43:01,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:43:01,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475156029] [2020-10-29 06:43:01,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:43:01,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:01,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:43:01,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:43:01,571 INFO L87 Difference]: Start difference. First operand 3144 states and 3918 transitions. Second operand 7 states. [2020-10-29 06:43:04,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:04,814 INFO L93 Difference]: Finished difference Result 7281 states and 9305 transitions. [2020-10-29 06:43:04,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 06:43:04,820 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-29 06:43:04,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:04,844 INFO L225 Difference]: With dead ends: 7281 [2020-10-29 06:43:04,845 INFO L226 Difference]: Without dead ends: 4331 [2020-10-29 06:43:04,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:43:04,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4331 states. [2020-10-29 06:43:04,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4331 to 4317. [2020-10-29 06:43:04,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4317 states. [2020-10-29 06:43:05,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4317 states to 4317 states and 5311 transitions. [2020-10-29 06:43:05,002 INFO L78 Accepts]: Start accepts. Automaton has 4317 states and 5311 transitions. Word has length 213 [2020-10-29 06:43:05,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:05,002 INFO L481 AbstractCegarLoop]: Abstraction has 4317 states and 5311 transitions. [2020-10-29 06:43:05,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:43:05,003 INFO L276 IsEmpty]: Start isEmpty. Operand 4317 states and 5311 transitions. [2020-10-29 06:43:05,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-29 06:43:05,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:05,010 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:43:05,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:43:05,010 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:05,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:05,011 INFO L82 PathProgramCache]: Analyzing trace with hash -463570762, now seen corresponding path program 1 times [2020-10-29 06:43:05,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:05,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252659704] [2020-10-29 06:43:05,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:05,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:05,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:05,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:07,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:07,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:10,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:10,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 06:43:10,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:43:10,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 06:43:10,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:10,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 06:43:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 06:43:10,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:10,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:10,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:10,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:10,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:10,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:10,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:43:10,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:10,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:10,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:43:10,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:10,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:43:10,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:10,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:10,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:10,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:10,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:43:10,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:10,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 06:43:10,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:10,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:10,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:10,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:10,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 06:43:10,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:10,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 06:43:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:10,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:10,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:10,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:43:10,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:10,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 06:43:10,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:10,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:43:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:43:10,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:10,672 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:43:10,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252659704] [2020-10-29 06:43:10,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:43:10,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:43:10,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100652028] [2020-10-29 06:43:10,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:43:10,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:10,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:43:10,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:43:10,683 INFO L87 Difference]: Start difference. First operand 4317 states and 5311 transitions. Second operand 7 states. [2020-10-29 06:43:16,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:16,244 INFO L93 Difference]: Finished difference Result 9958 states and 13181 transitions. [2020-10-29 06:43:16,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:43:16,245 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-29 06:43:16,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:16,283 INFO L225 Difference]: With dead ends: 9958 [2020-10-29 06:43:16,283 INFO L226 Difference]: Without dead ends: 6607 [2020-10-29 06:43:16,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:43:16,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6607 states. [2020-10-29 06:43:16,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6607 to 6299. [2020-10-29 06:43:16,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6299 states. [2020-10-29 06:43:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6299 states to 6299 states and 7788 transitions. [2020-10-29 06:43:16,492 INFO L78 Accepts]: Start accepts. Automaton has 6299 states and 7788 transitions. Word has length 224 [2020-10-29 06:43:16,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:16,492 INFO L481 AbstractCegarLoop]: Abstraction has 6299 states and 7788 transitions. [2020-10-29 06:43:16,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:43:16,493 INFO L276 IsEmpty]: Start isEmpty. Operand 6299 states and 7788 transitions. [2020-10-29 06:43:16,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-29 06:43:16,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:16,501 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:43:16,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:43:16,501 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:16,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:16,502 INFO L82 PathProgramCache]: Analyzing trace with hash -880878513, now seen corresponding path program 1 times [2020-10-29 06:43:16,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:16,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76029646] [2020-10-29 06:43:16,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:16,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:16,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:17,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:17,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 06:43:17,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:43:17,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1335 [2020-10-29 06:43:17,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:17,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:43:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:43:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-29 06:43:17,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:18,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:18,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:18,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:18,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:18,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:18,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 06:43:18,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:18,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:18,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:18,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:18,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:43:18,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:18,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:18,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:18,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:18,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 06:43:18,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:18,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-29 06:43:18,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:18,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:43:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-29 06:43:18,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:43:18,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76029646] [2020-10-29 06:43:18,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:43:18,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:43:18,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141547773] [2020-10-29 06:43:18,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:43:18,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:18,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:43:18,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:43:18,723 INFO L87 Difference]: Start difference. First operand 6299 states and 7788 transitions. Second operand 7 states. [2020-10-29 06:43:18,866 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 06:43:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:22,539 INFO L93 Difference]: Finished difference Result 15025 states and 19029 transitions. [2020-10-29 06:43:22,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:43:22,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-10-29 06:43:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:22,579 INFO L225 Difference]: With dead ends: 15025 [2020-10-29 06:43:22,579 INFO L226 Difference]: Without dead ends: 8724 [2020-10-29 06:43:22,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:43:22,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8724 states. [2020-10-29 06:43:22,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8724 to 8688. [2020-10-29 06:43:22,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8688 states. [2020-10-29 06:43:22,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8688 states to 8688 states and 10674 transitions. [2020-10-29 06:43:22,830 INFO L78 Accepts]: Start accepts. Automaton has 8688 states and 10674 transitions. Word has length 226 [2020-10-29 06:43:22,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:22,830 INFO L481 AbstractCegarLoop]: Abstraction has 8688 states and 10674 transitions. [2020-10-29 06:43:22,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:43:22,830 INFO L276 IsEmpty]: Start isEmpty. Operand 8688 states and 10674 transitions. [2020-10-29 06:43:22,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-29 06:43:22,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:22,839 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:43:22,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:43:22,839 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:22,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:22,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1224883934, now seen corresponding path program 1 times [2020-10-29 06:43:22,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:22,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375402251] [2020-10-29 06:43:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:23,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:23,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:23,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:25,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:25,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-29 06:43:25,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:43:25,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2998 [2020-10-29 06:43:25,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:25,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:25,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:25,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:43:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 06:43:25,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:43:26,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:26,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:26,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:26,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:26,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:26,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:43:26,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:26,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:43:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:43:26,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:26,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:26,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:26,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:26,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:43:26,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:26,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 06:43:26,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:26,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:26,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:26,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:26,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:43:26,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:26,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:43:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:26,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:26,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:26,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:43:26,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:26,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 06:43:26,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:26,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:43:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:43:26,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:26,691 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:43:26,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375402251] [2020-10-29 06:43:26,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:43:26,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:43:26,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085575636] [2020-10-29 06:43:26,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:43:26,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:26,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:43:26,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:43:26,694 INFO L87 Difference]: Start difference. First operand 8688 states and 10674 transitions. Second operand 7 states. [2020-10-29 06:43:30,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:30,316 INFO L93 Difference]: Finished difference Result 19530 states and 24610 transitions. [2020-10-29 06:43:30,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:43:30,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-10-29 06:43:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:30,353 INFO L225 Difference]: With dead ends: 19530 [2020-10-29 06:43:30,353 INFO L226 Difference]: Without dead ends: 11228 [2020-10-29 06:43:30,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:43:30,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11228 states. [2020-10-29 06:43:30,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11228 to 11198. [2020-10-29 06:43:30,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11198 states. [2020-10-29 06:43:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11198 states to 11198 states and 13765 transitions. [2020-10-29 06:43:30,678 INFO L78 Accepts]: Start accepts. Automaton has 11198 states and 13765 transitions. Word has length 267 [2020-10-29 06:43:30,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:30,679 INFO L481 AbstractCegarLoop]: Abstraction has 11198 states and 13765 transitions. [2020-10-29 06:43:30,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:43:30,679 INFO L276 IsEmpty]: Start isEmpty. Operand 11198 states and 13765 transitions. [2020-10-29 06:43:30,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-29 06:43:30,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:30,688 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:43:30,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:43:30,689 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:30,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:30,689 INFO L82 PathProgramCache]: Analyzing trace with hash 527200250, now seen corresponding path program 1 times [2020-10-29 06:43:30,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:30,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441689343] [2020-10-29 06:43:30,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:30,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:31,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:31,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-29 06:43:31,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:31,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-29 06:43:31,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:31,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:31,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:43:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:43:31,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:31,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:31,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:31,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:31,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:31,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:31,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:43:31,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:31,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:31,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:43:31,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:31,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:43:31,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:31,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:31,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:31,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:31,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:43:31,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:31,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 06:43:31,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:31,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:31,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:31,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:31,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:43:31,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:31,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:43:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:31,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:31,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:31,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:43:31,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:31,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 06:43:31,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:31,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:43:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:43:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:43:32,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441689343] [2020-10-29 06:43:32,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:43:32,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:43:32,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333777996] [2020-10-29 06:43:32,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:43:32,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:32,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:43:32,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:43:32,051 INFO L87 Difference]: Start difference. First operand 11198 states and 13765 transitions. Second operand 7 states. [2020-10-29 06:43:35,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:35,779 INFO L93 Difference]: Finished difference Result 22811 states and 28192 transitions. [2020-10-29 06:43:35,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:43:35,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-29 06:43:35,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:35,818 INFO L225 Difference]: With dead ends: 22811 [2020-10-29 06:43:35,818 INFO L226 Difference]: Without dead ends: 11801 [2020-10-29 06:43:35,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:43:35,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11801 states. [2020-10-29 06:43:36,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11801 to 11768. [2020-10-29 06:43:36,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11768 states. [2020-10-29 06:43:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11768 states to 11768 states and 14375 transitions. [2020-10-29 06:43:36,102 INFO L78 Accepts]: Start accepts. Automaton has 11768 states and 14375 transitions. Word has length 281 [2020-10-29 06:43:36,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:36,103 INFO L481 AbstractCegarLoop]: Abstraction has 11768 states and 14375 transitions. [2020-10-29 06:43:36,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:43:36,103 INFO L276 IsEmpty]: Start isEmpty. Operand 11768 states and 14375 transitions. [2020-10-29 06:43:36,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-29 06:43:36,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:36,113 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:43:36,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:43:36,113 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:36,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:36,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1450725838, now seen corresponding path program 1 times [2020-10-29 06:43:36,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:36,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284599861] [2020-10-29 06:43:36,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:36,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:36,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:36,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-29 06:43:36,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:36,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-10-29 06:43:36,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:36,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 06:43:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:43:36,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:36,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:36,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:36,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:36,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:36,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:36,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:43:36,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:36,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:43:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:43:36,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:36,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:37,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:37,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:37,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:43:37,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:37,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 06:43:37,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:37,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:37,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:37,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:37,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 06:43:37,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:37,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:43:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:37,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:37,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:37,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:43:37,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:37,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 06:43:37,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:37,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:43:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:43:37,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:43:37,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284599861] [2020-10-29 06:43:37,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:43:37,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:43:37,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478258944] [2020-10-29 06:43:37,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:43:37,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:37,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:43:37,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:43:37,574 INFO L87 Difference]: Start difference. First operand 11768 states and 14375 transitions. Second operand 7 states. [2020-10-29 06:43:41,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:41,187 INFO L93 Difference]: Finished difference Result 22185 states and 27136 transitions. [2020-10-29 06:43:41,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 06:43:41,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-29 06:43:41,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:41,244 INFO L225 Difference]: With dead ends: 22185 [2020-10-29 06:43:41,244 INFO L226 Difference]: Without dead ends: 12357 [2020-10-29 06:43:41,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:43:41,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12357 states. [2020-10-29 06:43:41,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12357 to 12334. [2020-10-29 06:43:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12334 states. [2020-10-29 06:43:41,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12334 states to 12334 states and 14961 transitions. [2020-10-29 06:43:41,516 INFO L78 Accepts]: Start accepts. Automaton has 12334 states and 14961 transitions. Word has length 291 [2020-10-29 06:43:41,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:41,517 INFO L481 AbstractCegarLoop]: Abstraction has 12334 states and 14961 transitions. [2020-10-29 06:43:41,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:43:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 12334 states and 14961 transitions. [2020-10-29 06:43:41,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-29 06:43:41,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:41,527 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:43:41,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 06:43:41,527 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:41,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:41,528 INFO L82 PathProgramCache]: Analyzing trace with hash -704486117, now seen corresponding path program 1 times [2020-10-29 06:43:41,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:41,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168106196] [2020-10-29 06:43:41,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:41,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:42,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:42,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 06:43:42,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:42,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-10-29 06:43:42,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:42,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:43:42,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 06:43:42,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:42,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:42,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:42,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:42,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:42,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:42,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:43:42,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:42,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:43:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:43:42,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:42,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:42,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:42,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:42,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:43:42,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:42,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 06:43:42,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:42,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:42,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:42,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:42,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:43:42,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:42,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:43:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:42,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:42,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:42,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:43:42,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:42,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 06:43:42,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:42,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:43:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:43:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:42,784 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:43:42,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168106196] [2020-10-29 06:43:42,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:43:42,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:43:42,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40320009] [2020-10-29 06:43:42,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:43:42,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:42,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:43:42,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:43:42,787 INFO L87 Difference]: Start difference. First operand 12334 states and 14961 transitions. Second operand 7 states. [2020-10-29 06:43:47,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:47,429 INFO L93 Difference]: Finished difference Result 26990 states and 32758 transitions. [2020-10-29 06:43:47,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:43:47,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-10-29 06:43:47,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:47,470 INFO L225 Difference]: With dead ends: 26990 [2020-10-29 06:43:47,470 INFO L226 Difference]: Without dead ends: 14847 [2020-10-29 06:43:47,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:43:47,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14847 states. [2020-10-29 06:43:47,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14847 to 14252. [2020-10-29 06:43:47,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14252 states. [2020-10-29 06:43:47,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14252 states to 14252 states and 17068 transitions. [2020-10-29 06:43:47,756 INFO L78 Accepts]: Start accepts. Automaton has 14252 states and 17068 transitions. Word has length 296 [2020-10-29 06:43:47,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:47,757 INFO L481 AbstractCegarLoop]: Abstraction has 14252 states and 17068 transitions. [2020-10-29 06:43:47,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:43:47,757 INFO L276 IsEmpty]: Start isEmpty. Operand 14252 states and 17068 transitions. [2020-10-29 06:43:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-29 06:43:47,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:47,768 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:43:47,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 06:43:47,769 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:47,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:47,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1633478736, now seen corresponding path program 1 times [2020-10-29 06:43:47,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:47,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696460548] [2020-10-29 06:43:47,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:47,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:48,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:48,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-29 06:43:48,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:48,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-29 06:43:48,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:48,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-29 06:43:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:43:48,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:48,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:48,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:48,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:48,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:48,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:48,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:43:48,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:48,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:48,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:43:48,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:43:48,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:48,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:48,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:48,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:48,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:43:48,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:48,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 06:43:48,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:48,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:48,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:48,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 06:43:48,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:48,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:43:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:48,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:48,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:48,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:43:48,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:48,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 06:43:48,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:48,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:48,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:48,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:43:48,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:43:48,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:43:49,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696460548] [2020-10-29 06:43:49,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:43:49,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:43:49,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961869750] [2020-10-29 06:43:49,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:43:49,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:49,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:43:49,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:43:49,042 INFO L87 Difference]: Start difference. First operand 14252 states and 17068 transitions. Second operand 7 states. [2020-10-29 06:43:52,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:52,770 INFO L93 Difference]: Finished difference Result 27179 states and 32600 transitions. [2020-10-29 06:43:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:43:52,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 312 [2020-10-29 06:43:52,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:52,819 INFO L225 Difference]: With dead ends: 27179 [2020-10-29 06:43:52,819 INFO L226 Difference]: Without dead ends: 15247 [2020-10-29 06:43:52,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:43:52,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15247 states. [2020-10-29 06:43:53,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15247 to 14636. [2020-10-29 06:43:53,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14636 states. [2020-10-29 06:43:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14636 states to 14636 states and 17484 transitions. [2020-10-29 06:43:53,272 INFO L78 Accepts]: Start accepts. Automaton has 14636 states and 17484 transitions. Word has length 312 [2020-10-29 06:43:53,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:53,273 INFO L481 AbstractCegarLoop]: Abstraction has 14636 states and 17484 transitions. [2020-10-29 06:43:53,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:43:53,273 INFO L276 IsEmpty]: Start isEmpty. Operand 14636 states and 17484 transitions. [2020-10-29 06:43:53,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-29 06:43:53,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:53,288 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:43:53,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 06:43:53,289 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:53,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:53,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1294163036, now seen corresponding path program 1 times [2020-10-29 06:43:53,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:53,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476944275] [2020-10-29 06:43:53,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:53,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:53,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:53,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:53,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-29 06:43:53,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:43:53,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-29 06:43:53,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:53,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:53,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:43:53,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-29 06:43:53,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:43:53,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:54,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:43:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:54,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:54,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:54,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:43:54,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:54,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:43:54,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:54,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:43:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:43:54,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:54,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:43:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:54,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:54,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:54,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:43:54,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:54,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:43:54,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:54,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:54,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:43:54,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:54,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:43:54,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:54,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:43:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:54,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:54,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:43:54,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 06:43:54,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:43:54,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 06:43:54,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:43:54,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:43:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:43:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:43:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-29 06:43:54,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:43:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-29 06:43:54,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476944275] [2020-10-29 06:43:54,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:43:54,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:43:54,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948464584] [2020-10-29 06:43:54,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:43:54,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:43:54,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:43:54,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:43:54,502 INFO L87 Difference]: Start difference. First operand 14636 states and 17484 transitions. Second operand 6 states. [2020-10-29 06:43:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:43:59,133 INFO L93 Difference]: Finished difference Result 31017 states and 37230 transitions. [2020-10-29 06:43:59,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:43:59,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 341 [2020-10-29 06:43:59,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:43:59,179 INFO L225 Difference]: With dead ends: 31017 [2020-10-29 06:43:59,179 INFO L226 Difference]: Without dead ends: 16575 [2020-10-29 06:43:59,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:43:59,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16575 states. [2020-10-29 06:43:59,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16575 to 15579. [2020-10-29 06:43:59,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15579 states. [2020-10-29 06:43:59,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15579 states to 15579 states and 18588 transitions. [2020-10-29 06:43:59,493 INFO L78 Accepts]: Start accepts. Automaton has 15579 states and 18588 transitions. Word has length 341 [2020-10-29 06:43:59,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:43:59,494 INFO L481 AbstractCegarLoop]: Abstraction has 15579 states and 18588 transitions. [2020-10-29 06:43:59,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:43:59,494 INFO L276 IsEmpty]: Start isEmpty. Operand 15579 states and 18588 transitions. [2020-10-29 06:43:59,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-29 06:43:59,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:43:59,508 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:43:59,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 06:43:59,508 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:43:59,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:43:59,509 INFO L82 PathProgramCache]: Analyzing trace with hash -663423689, now seen corresponding path program 1 times [2020-10-29 06:43:59,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:43:59,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514845909] [2020-10-29 06:43:59,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:43:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:43:59,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:43:59,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:01,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:01,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-29 06:44:01,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:44:01,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1795 [2020-10-29 06:44:01,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:01,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:01,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:44:01,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:44:01,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:01,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:44:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:01,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:01,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:01,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:44:01,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:01,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:44:01,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:01,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:01,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:01,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:01,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:01,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:01,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:44:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:01,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:01,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:01,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:44:01,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:01,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:44:01,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:01,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:01,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:01,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:44:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:01,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:01,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:01,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:44:01,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:01,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 06:44:01,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:01,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:44:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:44:01,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:01,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:44:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:01,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:01,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:01,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:44:01,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:01,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 06:44:01,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:01,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:44:01,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-29 06:44:02,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514845909] [2020-10-29 06:44:02,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:44:02,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:44:02,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869076832] [2020-10-29 06:44:02,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:44:02,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:44:02,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:44:02,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:44:02,258 INFO L87 Difference]: Start difference. First operand 15579 states and 18588 transitions. Second operand 7 states. [2020-10-29 06:44:06,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:44:06,056 INFO L93 Difference]: Finished difference Result 31234 states and 37235 transitions. [2020-10-29 06:44:06,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:44:06,057 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 365 [2020-10-29 06:44:06,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:44:06,094 INFO L225 Difference]: With dead ends: 31234 [2020-10-29 06:44:06,094 INFO L226 Difference]: Without dead ends: 15655 [2020-10-29 06:44:06,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:44:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15655 states. [2020-10-29 06:44:06,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15655 to 15605. [2020-10-29 06:44:06,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15605 states. [2020-10-29 06:44:06,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15605 states to 15605 states and 17929 transitions. [2020-10-29 06:44:06,393 INFO L78 Accepts]: Start accepts. Automaton has 15605 states and 17929 transitions. Word has length 365 [2020-10-29 06:44:06,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:44:06,394 INFO L481 AbstractCegarLoop]: Abstraction has 15605 states and 17929 transitions. [2020-10-29 06:44:06,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:44:06,394 INFO L276 IsEmpty]: Start isEmpty. Operand 15605 states and 17929 transitions. [2020-10-29 06:44:06,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-29 06:44:06,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:44:06,409 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:44:06,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 06:44:06,409 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:44:06,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:44:06,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1332685175, now seen corresponding path program 1 times [2020-10-29 06:44:06,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:44:06,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168553932] [2020-10-29 06:44:06,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:44:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:06,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:06,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:09,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:09,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-29 06:44:09,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:44:09,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2669 [2020-10-29 06:44:09,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:09,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:09,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 06:44:09,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:44:09,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 382 [2020-10-29 06:44:09,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:09,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:44:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:09,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:09,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:09,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:44:09,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:09,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 06:44:09,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:09,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:09,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:44:09,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:09,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:44:09,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:09,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:44:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:09,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:09,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:09,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:44:09,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:09,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 06:44:09,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:09,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:44:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 06:44:09,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:09,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:44:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:09,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:09,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:09,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 06:44:09,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:09,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-29 06:44:09,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:09,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:09,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:44:09,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:09,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 06:44:09,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:10,135 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 4 proven. 250 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:44:10,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168553932] [2020-10-29 06:44:10,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:44:10,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:44:10,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901995849] [2020-10-29 06:44:10,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 06:44:10,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:44:10,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 06:44:10,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:44:10,137 INFO L87 Difference]: Start difference. First operand 15605 states and 17929 transitions. Second operand 11 states. [2020-10-29 06:44:17,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:44:17,389 INFO L93 Difference]: Finished difference Result 25406 states and 30644 transitions. [2020-10-29 06:44:17,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 06:44:17,390 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 377 [2020-10-29 06:44:17,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:44:17,465 INFO L225 Difference]: With dead ends: 25406 [2020-10-29 06:44:17,465 INFO L226 Difference]: Without dead ends: 25403 [2020-10-29 06:44:17,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2020-10-29 06:44:17,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25403 states. [2020-10-29 06:44:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25403 to 23952. [2020-10-29 06:44:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23952 states. [2020-10-29 06:44:18,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23952 states to 23952 states and 27566 transitions. [2020-10-29 06:44:18,018 INFO L78 Accepts]: Start accepts. Automaton has 23952 states and 27566 transitions. Word has length 377 [2020-10-29 06:44:18,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:44:18,019 INFO L481 AbstractCegarLoop]: Abstraction has 23952 states and 27566 transitions. [2020-10-29 06:44:18,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 06:44:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 23952 states and 27566 transitions. [2020-10-29 06:44:18,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-29 06:44:18,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:44:18,037 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:44:18,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 06:44:18,037 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:44:18,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:44:18,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1149925717, now seen corresponding path program 1 times [2020-10-29 06:44:18,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:44:18,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249522286] [2020-10-29 06:44:18,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:44:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:18,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:18,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:19,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:19,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-29 06:44:19,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:44:19,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1197 [2020-10-29 06:44:19,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:19,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-29 06:44:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:44:19,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:19,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:44:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:19,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:19,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:19,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:44:19,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:19,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:44:19,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:19,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:19,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:19,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:19,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:19,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:19,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:44:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:19,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:19,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:19,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:44:19,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:19,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 06:44:19,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:19,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:19,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:19,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:44:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:19,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:19,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:19,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 06:44:19,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:19,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 06:44:19,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:19,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:19,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:44:19,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:19,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:44:19,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:19,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-29 06:44:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:19,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:19,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:19,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:44:19,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:19,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 06:44:19,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:19,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:19,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:19,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:19,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:44:19,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 06:44:20,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249522286] [2020-10-29 06:44:20,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:44:20,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:44:20,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291910612] [2020-10-29 06:44:20,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:44:20,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:44:20,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:44:20,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:44:20,008 INFO L87 Difference]: Start difference. First operand 23952 states and 27566 transitions. Second operand 7 states. [2020-10-29 06:44:24,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:44:24,649 INFO L93 Difference]: Finished difference Result 45817 states and 52829 transitions. [2020-10-29 06:44:24,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:44:24,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-10-29 06:44:24,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:44:24,700 INFO L225 Difference]: With dead ends: 45817 [2020-10-29 06:44:24,700 INFO L226 Difference]: Without dead ends: 23832 [2020-10-29 06:44:24,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:44:24,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23832 states. [2020-10-29 06:44:25,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23832 to 23756. [2020-10-29 06:44:25,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23756 states. [2020-10-29 06:44:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23756 states to 23756 states and 27242 transitions. [2020-10-29 06:44:25,156 INFO L78 Accepts]: Start accepts. Automaton has 23756 states and 27242 transitions. Word has length 392 [2020-10-29 06:44:25,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:44:25,156 INFO L481 AbstractCegarLoop]: Abstraction has 23756 states and 27242 transitions. [2020-10-29 06:44:25,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:44:25,156 INFO L276 IsEmpty]: Start isEmpty. Operand 23756 states and 27242 transitions. [2020-10-29 06:44:25,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-10-29 06:44:25,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:44:25,174 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:44:25,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 06:44:25,174 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:44:25,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:44:25,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1563574963, now seen corresponding path program 1 times [2020-10-29 06:44:25,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:44:25,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176293176] [2020-10-29 06:44:25,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:44:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:25,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:25,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:25,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:26,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:30,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:30,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-29 06:44:30,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:44:30,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 06:44:30,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:30,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:30,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:44:30,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:44:30,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-29 06:44:30,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:44:30,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:44:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:30,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:30,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:30,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:44:30,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:30,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 06:44:30,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:30,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:30,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:44:30,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:30,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:44:30,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:30,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:44:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:30,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:30,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:30,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 06:44:30,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:30,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-29 06:44:30,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:30,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:30,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:30,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:30,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-29 06:44:30,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:30,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 06:44:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:30,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:30,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:30,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:44:30,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 06:44:30,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:30,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:44:30,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:31,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-29 06:44:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:31,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:31,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:31,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:44:31,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:31,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 06:44:31,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:31,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:31,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:31,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 06:44:31,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:31,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:31,422 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 194 proven. 225 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 06:44:31,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176293176] [2020-10-29 06:44:31,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:44:31,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:44:31,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155553320] [2020-10-29 06:44:31,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:44:31,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:44:31,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:44:31,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:44:31,425 INFO L87 Difference]: Start difference. First operand 23756 states and 27242 transitions. Second operand 8 states. [2020-10-29 06:44:34,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:44:34,725 INFO L93 Difference]: Finished difference Result 45252 states and 51980 transitions. [2020-10-29 06:44:34,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:44:34,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 409 [2020-10-29 06:44:34,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:44:34,778 INFO L225 Difference]: With dead ends: 45252 [2020-10-29 06:44:34,779 INFO L226 Difference]: Without dead ends: 23831 [2020-10-29 06:44:34,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:44:34,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23831 states. [2020-10-29 06:44:35,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23831 to 23754. [2020-10-29 06:44:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23754 states. [2020-10-29 06:44:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23754 states to 23754 states and 27229 transitions. [2020-10-29 06:44:35,174 INFO L78 Accepts]: Start accepts. Automaton has 23754 states and 27229 transitions. Word has length 409 [2020-10-29 06:44:35,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:44:35,174 INFO L481 AbstractCegarLoop]: Abstraction has 23754 states and 27229 transitions. [2020-10-29 06:44:35,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:44:35,174 INFO L276 IsEmpty]: Start isEmpty. Operand 23754 states and 27229 transitions. [2020-10-29 06:44:35,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-29 06:44:35,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:44:35,186 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:44:35,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 06:44:35,187 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:44:35,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:44:35,187 INFO L82 PathProgramCache]: Analyzing trace with hash 736561202, now seen corresponding path program 1 times [2020-10-29 06:44:35,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:44:35,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954333746] [2020-10-29 06:44:35,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:44:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:35,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:35,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:36,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:38,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:38,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 450 [2020-10-29 06:44:38,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:44:38,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3270 [2020-10-29 06:44:38,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:38,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 06:44:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:44:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 306 [2020-10-29 06:44:38,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:44:38,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:44:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:38,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:38,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:38,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:44:38,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:38,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:44:38,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:38,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:38,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:44:38,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:38,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:44:38,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:38,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:44:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:38,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:38,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:38,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:44:38,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:38,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 06:44:38,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:38,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:38,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:44:38,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:38,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:44:38,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:38,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:44:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:38,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:39,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:39,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:44:39,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:39,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 06:44:39,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:39,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:39,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:39,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:39,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 06:44:39,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:39,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-29 06:44:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:39,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:39,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:39,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:44:39,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:39,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 06:44:39,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:39,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:39,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:44:39,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:39,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:44:39,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 277 proven. 222 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 06:44:39,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954333746] [2020-10-29 06:44:39,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:44:39,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:44:39,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647449546] [2020-10-29 06:44:39,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:44:39,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:44:39,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:44:39,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:44:39,652 INFO L87 Difference]: Start difference. First operand 23754 states and 27229 transitions. Second operand 9 states. [2020-10-29 06:44:46,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:44:46,701 INFO L93 Difference]: Finished difference Result 48422 states and 56981 transitions. [2020-10-29 06:44:46,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 06:44:46,702 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 434 [2020-10-29 06:44:46,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:44:46,755 INFO L225 Difference]: With dead ends: 48422 [2020-10-29 06:44:46,755 INFO L226 Difference]: Without dead ends: 26821 [2020-10-29 06:44:46,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-29 06:44:46,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26821 states. [2020-10-29 06:44:47,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26821 to 25680. [2020-10-29 06:44:47,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25680 states. [2020-10-29 06:44:47,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25680 states to 25680 states and 29083 transitions. [2020-10-29 06:44:47,359 INFO L78 Accepts]: Start accepts. Automaton has 25680 states and 29083 transitions. Word has length 434 [2020-10-29 06:44:47,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:44:47,360 INFO L481 AbstractCegarLoop]: Abstraction has 25680 states and 29083 transitions. [2020-10-29 06:44:47,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:44:47,360 INFO L276 IsEmpty]: Start isEmpty. Operand 25680 states and 29083 transitions. [2020-10-29 06:44:47,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-29 06:44:47,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:44:47,374 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:44:47,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 06:44:47,375 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:44:47,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:44:47,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1031245267, now seen corresponding path program 1 times [2020-10-29 06:44:47,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:44:47,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881151739] [2020-10-29 06:44:47,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:44:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:47,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:47,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:47,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:49,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:50,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:50,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 451 [2020-10-29 06:44:50,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:44:50,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3283 [2020-10-29 06:44:50,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:50,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:50,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 06:44:50,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:44:50,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 384 [2020-10-29 06:44:50,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:50,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:44:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:50,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:50,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:50,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:44:50,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:50,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:44:50,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:50,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:50,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:44:50,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:44:50,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:44:50,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:51,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:44:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:51,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:51,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:51,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:44:51,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:51,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-29 06:44:51,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:51,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:44:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 06:44:51,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:51,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:44:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:51,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:51,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:51,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 06:44:51,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:51,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 06:44:51,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:51,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:44:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:44:51,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:51,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-29 06:44:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:44:51,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:44:51,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:44:51,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:44:51,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:44:51,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 06:44:51,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:44:51,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:44:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:44:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:44:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:44:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:44:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 174 proven. 238 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-29 06:44:52,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881151739] [2020-10-29 06:44:52,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:44:52,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:44:52,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282700737] [2020-10-29 06:44:52,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 06:44:52,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:44:52,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 06:44:52,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:44:52,262 INFO L87 Difference]: Start difference. First operand 25680 states and 29083 transitions. Second operand 11 states. [2020-10-29 06:44:52,468 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-10-29 06:44:56,576 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-10-29 06:44:56,896 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-10-29 06:44:57,450 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2020-10-29 06:44:58,171 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-29 06:44:59,072 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-29 06:45:00,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:45:00,840 INFO L93 Difference]: Finished difference Result 55157 states and 65297 transitions. [2020-10-29 06:45:00,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 06:45:00,842 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 435 [2020-10-29 06:45:00,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:45:00,939 INFO L225 Difference]: With dead ends: 55157 [2020-10-29 06:45:00,939 INFO L226 Difference]: Without dead ends: 31796 [2020-10-29 06:45:00,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=196, Invalid=674, Unknown=0, NotChecked=0, Total=870 [2020-10-29 06:45:01,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31796 states. [2020-10-29 06:45:01,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31796 to 30524. [2020-10-29 06:45:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30524 states. [2020-10-29 06:45:01,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30524 states to 30524 states and 34696 transitions. [2020-10-29 06:45:01,637 INFO L78 Accepts]: Start accepts. Automaton has 30524 states and 34696 transitions. Word has length 435 [2020-10-29 06:45:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:45:01,638 INFO L481 AbstractCegarLoop]: Abstraction has 30524 states and 34696 transitions. [2020-10-29 06:45:01,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 06:45:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 30524 states and 34696 transitions. [2020-10-29 06:45:01,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-10-29 06:45:01,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:45:01,657 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-29 06:45:01,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 06:45:01,657 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:45:01,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:45:01,658 INFO L82 PathProgramCache]: Analyzing trace with hash 102578819, now seen corresponding path program 1 times [2020-10-29 06:45:01,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:45:01,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957643419] [2020-10-29 06:45:01,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:45:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:01,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:02,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:04,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:04,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 468 [2020-10-29 06:45:04,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:45:04,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2396 [2020-10-29 06:45:04,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:04,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:04,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:45:04,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:45:04,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-29 06:45:04,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:04,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:45:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:04,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:04,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:04,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:45:04,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:04,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:45:04,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:04,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:04,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:45:04,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:04,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:45:04,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:04,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:45:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:04,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:04,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:04,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:45:04,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 06:45:04,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:04,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:45:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:04,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:45:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:04,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:04,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:04,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:04,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 06:45:04,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:45:04,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-29 06:45:04,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:04,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 06:45:04,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:04,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-29 06:45:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:04,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:04,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:04,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:45:04,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:04,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 06:45:04,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:04,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:04,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:45:04,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:04,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:45:04,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:05,315 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 373 proven. 4 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-29 06:45:05,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957643419] [2020-10-29 06:45:05,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:45:05,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:45:05,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819547150] [2020-10-29 06:45:05,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:45:05,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:45:05,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:45:05,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:45:05,318 INFO L87 Difference]: Start difference. First operand 30524 states and 34696 transitions. Second operand 8 states. [2020-10-29 06:45:10,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:45:10,307 INFO L93 Difference]: Finished difference Result 64187 states and 73124 transitions. [2020-10-29 06:45:10,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 06:45:10,308 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 452 [2020-10-29 06:45:10,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:45:10,363 INFO L225 Difference]: With dead ends: 64187 [2020-10-29 06:45:10,363 INFO L226 Difference]: Without dead ends: 32517 [2020-10-29 06:45:10,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 06:45:10,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32517 states. [2020-10-29 06:45:10,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32517 to 30884. [2020-10-29 06:45:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30884 states. [2020-10-29 06:45:10,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30884 states to 30884 states and 34837 transitions. [2020-10-29 06:45:10,911 INFO L78 Accepts]: Start accepts. Automaton has 30884 states and 34837 transitions. Word has length 452 [2020-10-29 06:45:10,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:45:10,911 INFO L481 AbstractCegarLoop]: Abstraction has 30884 states and 34837 transitions. [2020-10-29 06:45:10,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:45:10,912 INFO L276 IsEmpty]: Start isEmpty. Operand 30884 states and 34837 transitions. [2020-10-29 06:45:10,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-10-29 06:45:10,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:45:10,929 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:45:10,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 06:45:10,929 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:45:10,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:45:10,931 INFO L82 PathProgramCache]: Analyzing trace with hash 435791245, now seen corresponding path program 1 times [2020-10-29 06:45:10,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:45:10,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484906791] [2020-10-29 06:45:10,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:45:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:11,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:11,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:11,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:15,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:15,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 494 [2020-10-29 06:45:15,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:45:15,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4507 [2020-10-29 06:45:15,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:15,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:15,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 06:45:15,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-29 06:45:15,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 06:45:15,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:15,808 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 06:45:15,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:45:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:15,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:15,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:15,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:45:15,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:15,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:45:15,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:15,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:45:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:15,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:45:15,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:45:15,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:45:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:15,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:16,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:16,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:45:16,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:16,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-29 06:45:16,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:16,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 06:45:16,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:16,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:45:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:16,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:16,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:16,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 06:45:16,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:16,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-29 06:45:16,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:16,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:16,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:45:16,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:16,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 06:45:16,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:16,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-29 06:45:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:16,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:16,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:17,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:17,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:45:17,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:45:17,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-29 06:45:17,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:17,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:17,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:45:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:45:17,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 440 proven. 81 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:45:18,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484906791] [2020-10-29 06:45:18,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:45:18,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:45:18,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044293108] [2020-10-29 06:45:18,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:45:18,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:45:18,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:45:18,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:45:18,032 INFO L87 Difference]: Start difference. First operand 30884 states and 34837 transitions. Second operand 9 states. [2020-10-29 06:45:18,385 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-29 06:45:20,202 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-29 06:45:20,526 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-29 06:45:21,150 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-29 06:45:22,538 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-29 06:45:23,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:45:23,232 INFO L93 Difference]: Finished difference Result 58172 states and 65555 transitions. [2020-10-29 06:45:23,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 06:45:23,236 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 478 [2020-10-29 06:45:23,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:45:23,296 INFO L225 Difference]: With dead ends: 58172 [2020-10-29 06:45:23,297 INFO L226 Difference]: Without dead ends: 34640 [2020-10-29 06:45:23,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-29 06:45:23,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34640 states. [2020-10-29 06:45:23,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34640 to 34316. [2020-10-29 06:45:23,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34316 states. [2020-10-29 06:45:23,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34316 states to 34316 states and 38603 transitions. [2020-10-29 06:45:23,952 INFO L78 Accepts]: Start accepts. Automaton has 34316 states and 38603 transitions. Word has length 478 [2020-10-29 06:45:23,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:45:23,952 INFO L481 AbstractCegarLoop]: Abstraction has 34316 states and 38603 transitions. [2020-10-29 06:45:23,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:45:23,953 INFO L276 IsEmpty]: Start isEmpty. Operand 34316 states and 38603 transitions. [2020-10-29 06:45:23,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-10-29 06:45:23,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:45:23,970 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:45:23,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 06:45:23,970 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:45:23,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:45:23,971 INFO L82 PathProgramCache]: Analyzing trace with hash 801536467, now seen corresponding path program 1 times [2020-10-29 06:45:23,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:45:23,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013089702] [2020-10-29 06:45:23,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:45:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:24,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:24,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:24,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:24,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:24,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:25,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:25,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:25,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 494 [2020-10-29 06:45:25,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 06:45:25,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1540 [2020-10-29 06:45:25,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:25,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:25,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:25,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:45:25,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-29 06:45:25,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:25,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:45:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:25,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:25,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:25,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:45:25,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:25,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:45:25,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:25,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:25,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:25,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:45:25,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:25,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:45:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:25,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:25,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:25,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:25,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:45:25,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:45:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 06:45:25,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:25,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 06:45:25,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:26,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:45:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:26,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:26,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:26,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:26,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:45:26,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:45:26,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 06:45:26,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:26,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:26,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:26,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-29 06:45:26,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 06:45:26,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:26,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-29 06:45:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:26,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:26,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:26,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 06:45:26,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:26,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 06:45:26,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:26,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:26,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:45:26,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-29 06:45:26,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:45:26,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:26,486 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 194 proven. 6 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2020-10-29 06:45:26,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013089702] [2020-10-29 06:45:26,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:45:26,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:45:26,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32385768] [2020-10-29 06:45:26,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:45:26,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:45:26,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:45:26,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:45:26,488 INFO L87 Difference]: Start difference. First operand 34316 states and 38603 transitions. Second operand 6 states. [2020-10-29 06:45:28,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:45:28,971 INFO L93 Difference]: Finished difference Result 62303 states and 69972 transitions. [2020-10-29 06:45:28,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:45:28,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 478 [2020-10-29 06:45:28,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:45:29,028 INFO L225 Difference]: With dead ends: 62303 [2020-10-29 06:45:29,029 INFO L226 Difference]: Without dead ends: 31100 [2020-10-29 06:45:29,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:45:29,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31100 states. [2020-10-29 06:45:29,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31100 to 30973. [2020-10-29 06:45:29,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30973 states. [2020-10-29 06:45:29,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30973 states to 30973 states and 34558 transitions. [2020-10-29 06:45:29,604 INFO L78 Accepts]: Start accepts. Automaton has 30973 states and 34558 transitions. Word has length 478 [2020-10-29 06:45:29,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:45:29,605 INFO L481 AbstractCegarLoop]: Abstraction has 30973 states and 34558 transitions. [2020-10-29 06:45:29,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:45:29,605 INFO L276 IsEmpty]: Start isEmpty. Operand 30973 states and 34558 transitions. [2020-10-29 06:45:29,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-10-29 06:45:29,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:45:29,620 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:45:29,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 06:45:29,620 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:45:29,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:45:29,623 INFO L82 PathProgramCache]: Analyzing trace with hash -3975756, now seen corresponding path program 1 times [2020-10-29 06:45:29,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:45:29,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616491775] [2020-10-29 06:45:29,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:45:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:29,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:30,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:30,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:31,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:33,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:33,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-29 06:45:33,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:45:33,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3864 [2020-10-29 06:45:33,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:33,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:45:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-29 06:45:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 06:45:33,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:33,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:45:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:33,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:33,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:33,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:45:33,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:33,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:45:33,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:33,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:45:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:45:33,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:33,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:45:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:33,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:33,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:33,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:45:33,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:33,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 06:45:33,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:33,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:45:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:45:33,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:45:33,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:45:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:33,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:34,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:34,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 06:45:34,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:34,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 06:45:34,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:34,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:34,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:34,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:34,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:45:34,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:34,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-29 06:45:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:34,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:34,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:34,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 06:45:34,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:34,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 06:45:34,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:34,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:45:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 06:45:34,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:34,641 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 434 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-29 06:45:34,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616491775] [2020-10-29 06:45:34,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:45:34,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:45:34,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216389502] [2020-10-29 06:45:34,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:45:34,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:45:34,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:45:34,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:45:34,643 INFO L87 Difference]: Start difference. First operand 30973 states and 34558 transitions. Second operand 7 states. [2020-10-29 06:45:39,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:45:39,149 INFO L93 Difference]: Finished difference Result 59737 states and 66911 transitions. [2020-10-29 06:45:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:45:39,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 480 [2020-10-29 06:45:39,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:45:39,221 INFO L225 Difference]: With dead ends: 59737 [2020-10-29 06:45:39,221 INFO L226 Difference]: Without dead ends: 33221 [2020-10-29 06:45:39,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:45:39,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33221 states. [2020-10-29 06:45:39,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33221 to 30765. [2020-10-29 06:45:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30765 states. [2020-10-29 06:45:39,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30765 states to 30765 states and 34166 transitions. [2020-10-29 06:45:39,638 INFO L78 Accepts]: Start accepts. Automaton has 30765 states and 34166 transitions. Word has length 480 [2020-10-29 06:45:39,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:45:39,638 INFO L481 AbstractCegarLoop]: Abstraction has 30765 states and 34166 transitions. [2020-10-29 06:45:39,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:45:39,638 INFO L276 IsEmpty]: Start isEmpty. Operand 30765 states and 34166 transitions. [2020-10-29 06:45:39,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-10-29 06:45:39,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:45:39,652 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:45:39,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 06:45:39,652 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:45:39,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:45:39,652 INFO L82 PathProgramCache]: Analyzing trace with hash -541255568, now seen corresponding path program 1 times [2020-10-29 06:45:39,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:45:39,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153574179] [2020-10-29 06:45:39,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:45:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:39,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:40,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:42,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:42,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 511 [2020-10-29 06:45:42,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:45:42,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2994 [2020-10-29 06:45:42,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:42,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 06:45:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:45:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 444 [2020-10-29 06:45:42,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:43,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:45:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:43,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:43,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:43,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:45:43,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:43,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:45:43,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:43,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:43,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:45:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:45:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:45:43,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:43,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:45:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:43,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:43,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:43,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 06:45:43,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:43,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 06:45:43,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:43,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:45:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-29 06:45:43,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:43,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 06:45:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:43,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:43,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:43,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:45:43,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:43,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-29 06:45:43,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:43,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:45:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 06:45:43,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:44,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-29 06:45:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:45:44,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:45:44,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:45:44,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:45:44,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:45:44,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 06:45:44,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:45:44,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:45:44,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:45:44,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:45:44,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:45:44,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:45:45,217 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 174 proven. 356 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 06:45:45,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153574179] [2020-10-29 06:45:45,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:45:45,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 06:45:45,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909423817] [2020-10-29 06:45:45,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 06:45:45,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:45:45,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 06:45:45,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:45:45,220 INFO L87 Difference]: Start difference. First operand 30765 states and 34166 transitions. Second operand 13 states. [2020-10-29 06:45:45,366 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-29 06:45:48,979 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 70 [2020-10-29 06:45:50,660 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-10-29 06:45:50,872 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-10-29 06:45:51,229 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 81 [2020-10-29 06:45:52,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:45:52,401 INFO L93 Difference]: Finished difference Result 58551 states and 65054 transitions. [2020-10-29 06:45:52,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 06:45:52,402 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 495 [2020-10-29 06:45:52,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:45:52,473 INFO L225 Difference]: With dead ends: 58551 [2020-10-29 06:45:52,473 INFO L226 Difference]: Without dead ends: 33001 [2020-10-29 06:45:52,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2020-10-29 06:45:52,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33001 states.