/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/Problem15_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:48:45,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:48:45,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:48:45,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:48:45,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:48:45,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:48:45,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:48:45,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:48:45,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:48:45,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:48:45,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:48:45,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:48:45,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:48:45,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:48:45,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:48:45,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:48:45,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:48:45,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:48:45,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:48:45,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:48:45,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:48:45,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:48:45,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:48:45,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:48:45,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:48:45,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:48:45,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:48:45,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:48:45,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:48:45,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:48:45,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:48:45,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:48:45,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:48:45,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:48:45,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:48:45,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:48:45,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:48:45,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:48:45,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:48:45,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:48:45,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:48:45,569 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 07:48:45,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:48:45,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:48:45,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:48:45,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:48:45,623 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:48:45,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:48:45,623 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:48:45,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:48:45,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:48:45,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:48:45,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:48:45,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:48:45,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:48:45,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:48:45,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:48:45,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:48:45,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:48:45,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:48:45,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:48:45,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:48:45,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:48:45,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:48:45,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:48:45,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:48:45,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:48:45,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:48:45,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:48:45,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:48:45,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:48:45,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:48:46,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:48:46,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:48:46,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:48:46,111 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:48:46,112 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:48:46,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label38.c [2020-10-29 07:48:46,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/702645a9a/374dfd9e3de54b75943f2747195b848e/FLAGca1c94326 [2020-10-29 07:48:47,056 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:48:47,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label38.c [2020-10-29 07:48:47,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/702645a9a/374dfd9e3de54b75943f2747195b848e/FLAGca1c94326 [2020-10-29 07:48:47,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/702645a9a/374dfd9e3de54b75943f2747195b848e [2020-10-29 07:48:47,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:48:47,170 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:48:47,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:48:47,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:48:47,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:48:47,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:48:47" (1/1) ... [2020-10-29 07:48:47,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535e3d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:47, skipping insertion in model container [2020-10-29 07:48:47,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:48:47" (1/1) ... [2020-10-29 07:48:47,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:48:47,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:48:48,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:48:48,367 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:48:48,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:48:48,716 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:48:48,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:48 WrapperNode [2020-10-29 07:48:48,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:48:48,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:48:48,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:48:48,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:48:48,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:48" (1/1) ... [2020-10-29 07:48:48,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:48" (1/1) ... [2020-10-29 07:48:48,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:48" (1/1) ... [2020-10-29 07:48:48,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:48" (1/1) ... [2020-10-29 07:48:48,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:48" (1/1) ... [2020-10-29 07:48:48,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:48" (1/1) ... [2020-10-29 07:48:48,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:48" (1/1) ... [2020-10-29 07:48:48,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:48:48,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:48:48,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:48:48,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:48:48,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:48" (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 07:48:49,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:48:49,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:48:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:48:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:48:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:48:49,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:48:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:48:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:48:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:48:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:48:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:48:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:48:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:48:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:48:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:48:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:48:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:48:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:48:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:48:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:48:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:48:52,326 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:48:52,327 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:48:52,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:48:52 BoogieIcfgContainer [2020-10-29 07:48:52,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:48:52,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:48:52,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:48:52,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:48:52,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:48:47" (1/3) ... [2020-10-29 07:48:52,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5b0d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:48:52, skipping insertion in model container [2020-10-29 07:48:52,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:48" (2/3) ... [2020-10-29 07:48:52,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5b0d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:48:52, skipping insertion in model container [2020-10-29 07:48:52,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:48:52" (3/3) ... [2020-10-29 07:48:52,362 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label38.c [2020-10-29 07:48:52,376 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:48:52,382 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:48:52,398 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:48:52,445 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:48:52,445 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:48:52,445 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:48:52,445 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:48:52,446 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:48:52,446 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:48:52,446 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:48:52,446 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:48:52,489 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:48:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 07:48:52,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:52,498 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] [2020-10-29 07:48:52,499 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:52,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:52,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1202570943, now seen corresponding path program 1 times [2020-10-29 07:48:52,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:52,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666336305] [2020-10-29 07:48:52,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:52,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:53,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:53,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 07:48:53,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:53,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-29 07:48:53,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:53,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:53,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:48:53,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:48:53,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 07:48:53,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:48:53,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:53,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:53,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:53,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:53,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:53,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:48:53,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:53,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:53,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:53,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:53,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:48:53,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:53,410 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 07:48:53,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666336305] [2020-10-29 07:48:53,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:48:53,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:48:53,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473367497] [2020-10-29 07:48:53,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:48:53,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:53,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:48:53,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:48:53,439 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 5 states. [2020-10-29 07:49:05,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:05,761 INFO L93 Difference]: Finished difference Result 1522 states and 2792 transitions. [2020-10-29 07:49:05,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:49:05,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-29 07:49:05,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:05,809 INFO L225 Difference]: With dead ends: 1522 [2020-10-29 07:49:05,809 INFO L226 Difference]: Without dead ends: 1011 [2020-10-29 07:49:05,827 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 07:49:05,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-29 07:49:05,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1001. [2020-10-29 07:49:05,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-10-29 07:49:05,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1380 transitions. [2020-10-29 07:49:05,962 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1380 transitions. Word has length 37 [2020-10-29 07:49:05,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:05,963 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1380 transitions. [2020-10-29 07:49:05,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:49:05,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1380 transitions. [2020-10-29 07:49:05,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 07:49:05,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:05,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:05,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:49:05,970 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:05,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:05,971 INFO L82 PathProgramCache]: Analyzing trace with hash -26943383, now seen corresponding path program 1 times [2020-10-29 07:49:05,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:05,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472149731] [2020-10-29 07:49:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:06,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:06,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:08,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:08,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:49:08,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:49:08,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1980 [2020-10-29 07:49:08,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:08,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:49:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:49:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:49:08,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:08,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:08,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:08,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:08,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:08,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:08,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:49:08,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:08,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:08,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:08,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:08,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:49:08,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:08,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:08,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:08,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:08,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:49:08,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:08,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 07:49:08,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:08,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:49:08,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:49:08,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472149731] [2020-10-29 07:49:08,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:49:08,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:49:08,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961934328] [2020-10-29 07:49:08,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:08,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:08,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:08,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:08,467 INFO L87 Difference]: Start difference. First operand 1001 states and 1380 transitions. Second operand 7 states. [2020-10-29 07:49:19,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:19,451 INFO L93 Difference]: Finished difference Result 2336 states and 3160 transitions. [2020-10-29 07:49:19,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:49:19,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-29 07:49:19,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:19,466 INFO L225 Difference]: With dead ends: 2336 [2020-10-29 07:49:19,466 INFO L226 Difference]: Without dead ends: 1341 [2020-10-29 07:49:19,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:49:19,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-10-29 07:49:19,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1324. [2020-10-29 07:49:19,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1324 states. [2020-10-29 07:49:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1735 transitions. [2020-10-29 07:49:19,568 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1735 transitions. Word has length 106 [2020-10-29 07:49:19,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:19,569 INFO L481 AbstractCegarLoop]: Abstraction has 1324 states and 1735 transitions. [2020-10-29 07:49:19,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:19,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1735 transitions. [2020-10-29 07:49:19,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 07:49:19,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:19,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:19,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:49:19,580 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:19,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:19,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1317769777, now seen corresponding path program 1 times [2020-10-29 07:49:19,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:19,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713668200] [2020-10-29 07:49:19,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:19,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:19,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:20,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:20,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 07:49:20,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:49:20,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-29 07:49:20,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:20,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:20,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:49:20,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:49:20,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:49:20,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:20,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:20,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:20,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:20,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:20,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:20,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:49:20,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:20,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:49:20,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:20,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:20,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:20,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:20,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:49:20,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:20,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 07:49:20,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:20,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:20,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:20,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:20,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:49:20,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:20,719 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:49:20,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713668200] [2020-10-29 07:49:20,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:49:20,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:49:20,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911014403] [2020-10-29 07:49:20,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:20,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:20,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:20,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:20,724 INFO L87 Difference]: Start difference. First operand 1324 states and 1735 transitions. Second operand 7 states. [2020-10-29 07:49:30,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:30,283 INFO L93 Difference]: Finished difference Result 3009 states and 4143 transitions. [2020-10-29 07:49:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:49:30,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-29 07:49:30,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:30,297 INFO L225 Difference]: With dead ends: 3009 [2020-10-29 07:49:30,297 INFO L226 Difference]: Without dead ends: 1998 [2020-10-29 07:49:30,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:49:30,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2020-10-29 07:49:30,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1958. [2020-10-29 07:49:30,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1958 states. [2020-10-29 07:49:30,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2429 transitions. [2020-10-29 07:49:30,392 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2429 transitions. Word has length 111 [2020-10-29 07:49:30,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:30,393 INFO L481 AbstractCegarLoop]: Abstraction has 1958 states and 2429 transitions. [2020-10-29 07:49:30,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:30,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2429 transitions. [2020-10-29 07:49:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-29 07:49:30,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:30,409 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 07:49:30,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:49:30,410 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:30,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:30,411 INFO L82 PathProgramCache]: Analyzing trace with hash 592816440, now seen corresponding path program 1 times [2020-10-29 07:49:30,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:30,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431244433] [2020-10-29 07:49:30,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:30,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:30,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:30,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:31,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:32,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:32,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:35,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:35,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 07:49:35,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:49:35,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4698 [2020-10-29 07:49:35,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:35,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:49:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:49:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:49:35,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:35,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:35,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:35,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:35,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:35,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:35,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:49:35,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:35,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:35,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:35,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:35,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:49:35,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:35,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:35,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:35,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:35,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:49:35,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:35,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 07:49:35,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:35,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:35,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:35,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:35,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:49:35,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:35,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:49:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:35,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:35,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:35,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:49:35,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:35,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 07:49:35,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:35,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:49:35,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 07:49:35,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431244433] [2020-10-29 07:49:35,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:35,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:49:35,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398386029] [2020-10-29 07:49:35,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:35,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:35,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:35,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:35,899 INFO L87 Difference]: Start difference. First operand 1958 states and 2429 transitions. Second operand 7 states. [2020-10-29 07:49:47,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:47,388 INFO L93 Difference]: Finished difference Result 4322 states and 5615 transitions. [2020-10-29 07:49:47,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:49:47,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2020-10-29 07:49:47,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:47,412 INFO L225 Difference]: With dead ends: 4322 [2020-10-29 07:49:47,412 INFO L226 Difference]: Without dead ends: 2988 [2020-10-29 07:49:47,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 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 07:49:47,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-10-29 07:49:47,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 2911. [2020-10-29 07:49:47,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2911 states. [2020-10-29 07:49:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 3519 transitions. [2020-10-29 07:49:47,531 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 3519 transitions. Word has length 211 [2020-10-29 07:49:47,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:47,532 INFO L481 AbstractCegarLoop]: Abstraction has 2911 states and 3519 transitions. [2020-10-29 07:49:47,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:47,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 3519 transitions. [2020-10-29 07:49:47,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-29 07:49:47,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:47,539 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:47,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:49:47,539 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:47,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:47,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1187892774, now seen corresponding path program 1 times [2020-10-29 07:49:47,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:47,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040516054] [2020-10-29 07:49:47,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:47,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:47,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:48,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:52,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:52,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-29 07:49:52,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:49:52,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 07:49:52,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:52,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:49:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:49:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:49:52,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:52,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:52,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:52,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:52,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:52,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:52,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:49:52,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:52,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:49:52,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:52,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:52,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:53,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:53,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:49:53,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-29 07:49:53,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:53,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:49:53,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:53,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:49:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:53,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:53,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:53,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:49:53,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:53,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 07:49:53,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:53,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:53,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:53,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:49:53,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:53,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 58 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:49:54,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040516054] [2020-10-29 07:49:54,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:54,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:49:54,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116660597] [2020-10-29 07:49:54,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:54,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:54,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:54,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:54,275 INFO L87 Difference]: Start difference. First operand 2911 states and 3519 transitions. Second operand 7 states. [2020-10-29 07:50:03,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:03,248 INFO L93 Difference]: Finished difference Result 5575 states and 6794 transitions. [2020-10-29 07:50:03,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:50:03,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 317 [2020-10-29 07:50:03,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:03,267 INFO L225 Difference]: With dead ends: 5575 [2020-10-29 07:50:03,267 INFO L226 Difference]: Without dead ends: 2977 [2020-10-29 07:50:03,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:50:03,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-10-29 07:50:03,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 2915. [2020-10-29 07:50:03,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2915 states. [2020-10-29 07:50:03,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 3519 transitions. [2020-10-29 07:50:03,363 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 3519 transitions. Word has length 317 [2020-10-29 07:50:03,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:03,364 INFO L481 AbstractCegarLoop]: Abstraction has 2915 states and 3519 transitions. [2020-10-29 07:50:03,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:50:03,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 3519 transitions. [2020-10-29 07:50:03,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-29 07:50:03,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:03,372 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:03,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:50:03,372 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:03,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:03,373 INFO L82 PathProgramCache]: Analyzing trace with hash 167455094, now seen corresponding path program 1 times [2020-10-29 07:50:03,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:03,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860274798] [2020-10-29 07:50:03,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:03,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:03,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:04,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:05,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:08,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:08,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-29 07:50:08,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:50:08,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4919 [2020-10-29 07:50:08,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:08,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:50:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:50:08,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-10-29 07:50:08,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:08,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:08,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:08,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:08,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:08,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:50:08,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:08,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:08,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:08,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:08,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:08,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:50:08,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:08,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:08,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:08,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:50:08,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:08,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 07:50:08,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:08,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:08,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:08,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:08,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:50:08,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:08,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:50:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:08,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:08,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:09,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:09,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:50:09,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:50:09,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-29 07:50:09,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:09,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:50:09,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 119 proven. 29 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:50:09,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860274798] [2020-10-29 07:50:09,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:09,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:50:09,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679718006] [2020-10-29 07:50:09,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:50:09,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:09,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:50:09,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:50:09,560 INFO L87 Difference]: Start difference. First operand 2915 states and 3519 transitions. Second operand 6 states. [2020-10-29 07:50:22,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:22,745 INFO L93 Difference]: Finished difference Result 6521 states and 8112 transitions. [2020-10-29 07:50:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:50:22,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 332 [2020-10-29 07:50:22,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:22,766 INFO L225 Difference]: With dead ends: 6521 [2020-10-29 07:50:22,766 INFO L226 Difference]: Without dead ends: 3579 [2020-10-29 07:50:22,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:50:22,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2020-10-29 07:50:22,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3560. [2020-10-29 07:50:22,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3560 states. [2020-10-29 07:50:22,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 4073 transitions. [2020-10-29 07:50:22,877 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 4073 transitions. Word has length 332 [2020-10-29 07:50:22,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:22,878 INFO L481 AbstractCegarLoop]: Abstraction has 3560 states and 4073 transitions. [2020-10-29 07:50:22,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:50:22,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 4073 transitions. [2020-10-29 07:50:22,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-29 07:50:22,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:22,887 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:22,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:50:22,887 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:22,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:22,888 INFO L82 PathProgramCache]: Analyzing trace with hash -427016420, now seen corresponding path program 1 times [2020-10-29 07:50:22,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:22,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673317569] [2020-10-29 07:50:22,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:23,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:24,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:24,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-29 07:50:24,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:50:24,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1559 [2020-10-29 07:50:24,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:24,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:24,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:24,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:50:24,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:50:24,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:24,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:24,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:24,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:24,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:24,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:24,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:50:24,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:24,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:24,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:24,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:24,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:24,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:24,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:25,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:25,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:50:25,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:25,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-29 07:50:25,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:25,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:50:25,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:25,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:50:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:25,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:25,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:25,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:50:25,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:25,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 07:50:25,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:25,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:25,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:25,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:25,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:50:25,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:25,726 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:50:25,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673317569] [2020-10-29 07:50:25,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:25,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:50:25,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387010652] [2020-10-29 07:50:25,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:50:25,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:25,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:50:25,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:50:25,730 INFO L87 Difference]: Start difference. First operand 3560 states and 4073 transitions. Second operand 7 states. [2020-10-29 07:50:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:37,370 INFO L93 Difference]: Finished difference Result 8802 states and 10390 transitions. [2020-10-29 07:50:37,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:50:37,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 396 [2020-10-29 07:50:37,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:37,398 INFO L225 Difference]: With dead ends: 8802 [2020-10-29 07:50:37,398 INFO L226 Difference]: Without dead ends: 5555 [2020-10-29 07:50:37,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:50:37,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5555 states. [2020-10-29 07:50:37,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5555 to 5470. [2020-10-29 07:50:37,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5470 states. [2020-10-29 07:50:37,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5470 states to 5470 states and 6212 transitions. [2020-10-29 07:50:37,566 INFO L78 Accepts]: Start accepts. Automaton has 5470 states and 6212 transitions. Word has length 396 [2020-10-29 07:50:37,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:37,568 INFO L481 AbstractCegarLoop]: Abstraction has 5470 states and 6212 transitions. [2020-10-29 07:50:37,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:50:37,568 INFO L276 IsEmpty]: Start isEmpty. Operand 5470 states and 6212 transitions. [2020-10-29 07:50:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-29 07:50:37,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:37,577 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:37,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:50:37,578 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:37,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:37,578 INFO L82 PathProgramCache]: Analyzing trace with hash 2122808542, now seen corresponding path program 1 times [2020-10-29 07:50:37,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:37,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293620964] [2020-10-29 07:50:37,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:37,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:37,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:40,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:40,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 436 [2020-10-29 07:50:40,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:50:40,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2762 [2020-10-29 07:50:40,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:40,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:40,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:40,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:50:40,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:50:40,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:40,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:40,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:40,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:40,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:40,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:40,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:50:40,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:40,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:40,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:40,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:40,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:40,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:40,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:40,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:40,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:40,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:50:40,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:40,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 07:50:40,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:40,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:40,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:40,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:40,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:50:40,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:41,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:50:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:41,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:41,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:41,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:50:41,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:41,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 07:50:41,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:41,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:50:41,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:50:41,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293620964] [2020-10-29 07:50:41,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:41,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:50:41,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850452912] [2020-10-29 07:50:41,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:50:41,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:41,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:50:41,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:50:41,736 INFO L87 Difference]: Start difference. First operand 5470 states and 6212 transitions. Second operand 7 states. [2020-10-29 07:50:56,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:56,191 INFO L93 Difference]: Finished difference Result 13216 states and 15044 transitions. [2020-10-29 07:50:56,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:50:56,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 422 [2020-10-29 07:50:56,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:56,226 INFO L225 Difference]: With dead ends: 13216 [2020-10-29 07:50:56,226 INFO L226 Difference]: Without dead ends: 8059 [2020-10-29 07:50:56,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:50:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8059 states. [2020-10-29 07:50:56,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8059 to 7987. [2020-10-29 07:50:56,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7987 states. [2020-10-29 07:50:56,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7987 states to 7987 states and 8891 transitions. [2020-10-29 07:50:56,439 INFO L78 Accepts]: Start accepts. Automaton has 7987 states and 8891 transitions. Word has length 422 [2020-10-29 07:50:56,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:56,440 INFO L481 AbstractCegarLoop]: Abstraction has 7987 states and 8891 transitions. [2020-10-29 07:50:56,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:50:56,440 INFO L276 IsEmpty]: Start isEmpty. Operand 7987 states and 8891 transitions. [2020-10-29 07:50:56,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-29 07:50:56,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:56,453 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:56,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:50:56,454 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:56,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:56,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1275171814, now seen corresponding path program 1 times [2020-10-29 07:50:56,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:56,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051666540] [2020-10-29 07:50:56,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:57,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:57,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 448 [2020-10-29 07:50:57,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:57,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-10-29 07:50:57,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:57,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:57,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:50:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 07:50:57,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:57,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:57,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:57,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:57,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:57,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:57,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:50:57,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:57,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:57,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:57,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:57,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:50:57,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:57,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:57,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:57,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:50:57,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:57,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 07:50:57,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:57,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:57,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:57,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:57,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:57,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:57,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:50:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:57,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:57,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:57,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:50:57,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:57,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 07:50:57,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:57,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:57,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:57,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:57,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:50:57,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:58,187 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 07:50:58,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051666540] [2020-10-29 07:50:58,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:58,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:50:58,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301461059] [2020-10-29 07:50:58,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:50:58,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:58,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:50:58,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:50:58,202 INFO L87 Difference]: Start difference. First operand 7987 states and 8891 transitions. Second operand 5 states. [2020-10-29 07:51:04,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:04,829 INFO L93 Difference]: Finished difference Result 17548 states and 19985 transitions. [2020-10-29 07:51:04,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:51:04,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 434 [2020-10-29 07:51:04,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:04,883 INFO L225 Difference]: With dead ends: 17548 [2020-10-29 07:51:04,883 INFO L226 Difference]: Without dead ends: 9874 [2020-10-29 07:51:04,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:51:04,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9874 states. [2020-10-29 07:51:05,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9874 to 9869. [2020-10-29 07:51:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9869 states. [2020-10-29 07:51:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9869 states to 9869 states and 10978 transitions. [2020-10-29 07:51:05,115 INFO L78 Accepts]: Start accepts. Automaton has 9869 states and 10978 transitions. Word has length 434 [2020-10-29 07:51:05,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:05,116 INFO L481 AbstractCegarLoop]: Abstraction has 9869 states and 10978 transitions. [2020-10-29 07:51:05,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:51:05,117 INFO L276 IsEmpty]: Start isEmpty. Operand 9869 states and 10978 transitions. [2020-10-29 07:51:05,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-10-29 07:51:05,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:05,126 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:05,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:51:05,126 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:05,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:05,127 INFO L82 PathProgramCache]: Analyzing trace with hash 251809399, now seen corresponding path program 1 times [2020-10-29 07:51:05,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:05,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24171554] [2020-10-29 07:51:05,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:05,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:05,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:07,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:08,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:08,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 551 [2020-10-29 07:51:08,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:51:08,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3694 [2020-10-29 07:51:08,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:08,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:08,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:08,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:51:08,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:51:08,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:09,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:09,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:09,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:09,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:09,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:09,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:51:09,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:09,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:09,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:09,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:09,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:09,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:09,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:09,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:09,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:09,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:51:09,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:09,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 07:51:09,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:09,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:09,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:09,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:09,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:09,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:09,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:51:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:09,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:09,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:09,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:51:09,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 07:51:09,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:09,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:51:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:09,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:51:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:09,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:09,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:09,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 07:51:09,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:09,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 07:51:09,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:09,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 07:51:09,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 288 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:51:09,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24171554] [2020-10-29 07:51:09,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:09,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:51:09,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20567803] [2020-10-29 07:51:09,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:51:09,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:09,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:51:09,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:51:09,996 INFO L87 Difference]: Start difference. First operand 9869 states and 10978 transitions. Second operand 7 states. [2020-10-29 07:51:24,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:24,495 INFO L93 Difference]: Finished difference Result 19513 states and 22198 transitions. [2020-10-29 07:51:24,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:51:24,498 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 535 [2020-10-29 07:51:24,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:24,540 INFO L225 Difference]: With dead ends: 19513 [2020-10-29 07:51:24,541 INFO L226 Difference]: Without dead ends: 10578 [2020-10-29 07:51:24,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:51:24,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10578 states. [2020-10-29 07:51:24,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10578 to 10539. [2020-10-29 07:51:24,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10539 states. [2020-10-29 07:51:24,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10539 states to 10539 states and 11701 transitions. [2020-10-29 07:51:24,912 INFO L78 Accepts]: Start accepts. Automaton has 10539 states and 11701 transitions. Word has length 535 [2020-10-29 07:51:24,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:24,913 INFO L481 AbstractCegarLoop]: Abstraction has 10539 states and 11701 transitions. [2020-10-29 07:51:24,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:51:24,913 INFO L276 IsEmpty]: Start isEmpty. Operand 10539 states and 11701 transitions. [2020-10-29 07:51:24,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2020-10-29 07:51:24,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:24,924 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:24,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:51:24,925 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:24,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:24,925 INFO L82 PathProgramCache]: Analyzing trace with hash 616275493, now seen corresponding path program 1 times [2020-10-29 07:51:24,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:24,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063604676] [2020-10-29 07:51:24,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:25,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:25,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:27,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:29,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:29,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 578 [2020-10-29 07:51:29,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:51:29,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4270 [2020-10-29 07:51:29,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:29,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:51:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 07:51:29,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:29,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:29,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:29,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:29,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:29,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:29,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:51:29,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:29,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:29,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:29,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:29,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:29,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:29,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:29,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:29,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:51:29,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:29,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 07:51:29,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:29,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:29,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:29,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:51:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:29,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:29,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:29,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:51:29,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:29,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 07:51:29,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:29,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:51:29,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:29,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:51:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:30,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:30,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:30,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 07:51:30,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:30,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 07:51:30,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:30,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:30,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:30,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:30,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:51:30,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:51:30,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063604676] [2020-10-29 07:51:30,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:30,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:51:30,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067914520] [2020-10-29 07:51:30,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:51:30,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:30,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:51:30,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:51:30,534 INFO L87 Difference]: Start difference. First operand 10539 states and 11701 transitions. Second operand 7 states. [2020-10-29 07:51:39,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:39,416 INFO L93 Difference]: Finished difference Result 23247 states and 26405 transitions. [2020-10-29 07:51:39,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:51:39,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 562 [2020-10-29 07:51:39,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:39,471 INFO L225 Difference]: With dead ends: 23247 [2020-10-29 07:51:39,471 INFO L226 Difference]: Without dead ends: 14262 [2020-10-29 07:51:39,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:51:39,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14262 states. [2020-10-29 07:51:39,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14262 to 13016. [2020-10-29 07:51:39,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13016 states. [2020-10-29 07:51:39,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13016 states to 13016 states and 14738 transitions. [2020-10-29 07:51:39,821 INFO L78 Accepts]: Start accepts. Automaton has 13016 states and 14738 transitions. Word has length 562 [2020-10-29 07:51:39,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:39,822 INFO L481 AbstractCegarLoop]: Abstraction has 13016 states and 14738 transitions. [2020-10-29 07:51:39,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:51:39,822 INFO L276 IsEmpty]: Start isEmpty. Operand 13016 states and 14738 transitions. [2020-10-29 07:51:39,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2020-10-29 07:51:39,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:39,833 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:39,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:51:39,833 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:39,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:39,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1283651340, now seen corresponding path program 1 times [2020-10-29 07:51:39,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:39,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671505097] [2020-10-29 07:51:39,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:40,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:40,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:43,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:45,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:45,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 615 [2020-10-29 07:51:45,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:51:45,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 07:51:45,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:45,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:51:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:51:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:51:45,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:45,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:45,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:45,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:45,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:45,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:45,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:51:45,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:45,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:45,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:45,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:45,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:45,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:45,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:45,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:45,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:45,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:51:45,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:45,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 07:51:45,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:45,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:45,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:45,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:45,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:51:45,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:45,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:51:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:45,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:46,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:46,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:51:46,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:46,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 07:51:46,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:46,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:46,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:51:46,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:46,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:51:46,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:46,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:51:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:46,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:46,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:46,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 07:51:46,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:46,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-29 07:51:46,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:46,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:46,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:46,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:46,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 07:51:46,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 465 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:51:46,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671505097] [2020-10-29 07:51:46,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:46,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:51:46,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973747378] [2020-10-29 07:51:46,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:51:46,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:46,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:51:46,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:51:46,854 INFO L87 Difference]: Start difference. First operand 13016 states and 14738 transitions. Second operand 10 states. [2020-10-29 07:51:54,425 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-29 07:51:57,765 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:52:10,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:52:10,543 INFO L93 Difference]: Finished difference Result 33243 states and 38254 transitions. [2020-10-29 07:52:10,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 07:52:10,547 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 599 [2020-10-29 07:52:10,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:52:10,611 INFO L225 Difference]: With dead ends: 33243 [2020-10-29 07:52:10,611 INFO L226 Difference]: Without dead ends: 20540 [2020-10-29 07:52:10,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2020-10-29 07:52:10,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20540 states. [2020-10-29 07:52:11,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20540 to 19587. [2020-10-29 07:52:11,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19587 states. [2020-10-29 07:52:11,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19587 states to 19587 states and 22123 transitions. [2020-10-29 07:52:11,081 INFO L78 Accepts]: Start accepts. Automaton has 19587 states and 22123 transitions. Word has length 599 [2020-10-29 07:52:11,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:52:11,082 INFO L481 AbstractCegarLoop]: Abstraction has 19587 states and 22123 transitions. [2020-10-29 07:52:11,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 07:52:11,083 INFO L276 IsEmpty]: Start isEmpty. Operand 19587 states and 22123 transitions. [2020-10-29 07:52:11,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2020-10-29 07:52:11,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:52:11,096 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:52:11,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:52:11,097 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:52:11,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:52:11,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1010055705, now seen corresponding path program 1 times [2020-10-29 07:52:11,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:52:11,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663408692] [2020-10-29 07:52:11,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:52:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:11,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:11,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:11,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:12,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:16,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:16,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 658 [2020-10-29 07:52:16,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:52:16,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 07:52:16,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:16,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:16,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:16,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-29 07:52:16,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:52:16,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:16,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:52:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:16,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:16,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:16,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:52:16,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:16,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:52:16,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:16,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:16,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:16,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:16,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:52:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:16,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:16,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:16,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:52:16,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:16,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 07:52:16,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:16,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:16,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:52:16,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:52:16,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-29 07:52:16,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:16,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-29 07:52:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:16,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:17,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:17,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:52:17,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:17,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-29 07:52:17,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:17,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:52:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:52:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:52:17,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:17,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-29 07:52:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:52:17,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:52:17,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:52:17,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 07:52:17,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:52:17,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 07:52:17,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:52:17,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:52:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:52:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-10-29 07:52:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:52:17,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:52:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 288 proven. 167 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-29 07:52:17,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663408692] [2020-10-29 07:52:17,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:52:17,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:52:17,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25807574] [2020-10-29 07:52:17,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:52:17,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:52:17,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:52:17,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:52:17,922 INFO L87 Difference]: Start difference. First operand 19587 states and 22123 transitions. Second operand 8 states. [2020-10-29 07:52:23,131 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66