/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/array-examples/standard_two_index_05.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:49:25,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:49:25,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:49:25,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:49:25,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:49:25,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:49:25,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:49:25,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:49:25,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:49:25,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:49:25,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:49:25,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:49:25,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:49:25,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:49:25,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:49:25,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:49:25,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:49:25,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:49:25,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:49:25,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:49:25,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:49:25,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:49:25,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:49:25,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:49:25,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:49:25,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:49:25,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:49:25,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:49:25,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:49:25,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:49:25,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:49:25,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:49:25,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:49:25,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:49:25,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:49:25,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:49:25,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:49:25,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:49:25,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:49:25,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:49:25,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:49:25,463 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 03:49:25,525 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:49:25,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:49:25,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:49:25,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:49:25,528 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:49:25,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:49:25,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:49:25,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:49:25,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:49:25,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:49:25,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:49:25,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:49:25,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:49:25,531 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:49:25,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:49:25,532 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:49:25,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:49:25,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:49:25,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:49:25,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:49:25,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:49:25,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:49:25,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:49:25,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:49:25,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:49:25,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:49:25,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:49:25,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:49:25,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:49:25,535 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:49:25,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:49:26,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:49:26,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:49:26,010 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:49:26,010 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:49:26,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_two_index_05.i [2020-10-29 03:49:26,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0357ae64/af5090f7883d4b88888e154d26f93925/FLAG0ee38c35d [2020-10-29 03:49:26,774 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:49:26,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_two_index_05.i [2020-10-29 03:49:26,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0357ae64/af5090f7883d4b88888e154d26f93925/FLAG0ee38c35d [2020-10-29 03:49:27,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0357ae64/af5090f7883d4b88888e154d26f93925 [2020-10-29 03:49:27,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:49:27,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:49:27,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:49:27,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:49:27,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:49:27,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:49:27" (1/1) ... [2020-10-29 03:49:27,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c38d631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:49:27, skipping insertion in model container [2020-10-29 03:49:27,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:49:27" (1/1) ... [2020-10-29 03:49:27,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:49:27,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:49:27,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:49:27,497 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:49:27,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:49:27,555 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:49:27,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:49:27 WrapperNode [2020-10-29 03:49:27,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:49:27,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:49:27,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:49:27,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:49:27,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:49:27" (1/1) ... [2020-10-29 03:49:27,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:49:27" (1/1) ... [2020-10-29 03:49:27,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:49:27" (1/1) ... [2020-10-29 03:49:27,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:49:27" (1/1) ... [2020-10-29 03:49:27,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:49:27" (1/1) ... [2020-10-29 03:49:27,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:49:27" (1/1) ... [2020-10-29 03:49:27,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:49:27" (1/1) ... [2020-10-29 03:49:27,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:49:27,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:49:27,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:49:27,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:49:27,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:49:27" (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 03:49:27,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:49:27,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:49:27,745 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:49:27,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:49:27,746 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:49:27,746 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:49:27,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:49:27,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:49:27,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:49:27,747 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:49:27,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:49:27,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:49:27,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:49:27,747 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:49:27,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:49:27,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:49:27,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:49:27,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:49:27,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:49:27,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:49:28,117 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:49:28,118 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:49:28,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:49:28 BoogieIcfgContainer [2020-10-29 03:49:28,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:49:28,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:49:28,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:49:28,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:49:28,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:49:27" (1/3) ... [2020-10-29 03:49:28,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b12df46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:49:28, skipping insertion in model container [2020-10-29 03:49:28,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:49:27" (2/3) ... [2020-10-29 03:49:28,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b12df46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:49:28, skipping insertion in model container [2020-10-29 03:49:28,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:49:28" (3/3) ... [2020-10-29 03:49:28,131 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_two_index_05.i [2020-10-29 03:49:28,144 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:49:28,150 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:49:28,165 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:49:28,213 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:49:28,214 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:49:28,214 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:49:28,214 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:49:28,214 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:49:28,214 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:49:28,214 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:49:28,215 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:49:28,241 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-29 03:49:28,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 03:49:28,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:28,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:28,253 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:28,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:28,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1774182118, now seen corresponding path program 1 times [2020-10-29 03:49:28,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:28,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693637916] [2020-10-29 03:49:28,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:28,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:28,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:28,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:28,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 03:49:28,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:49:28,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-29 03:49:28,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:28,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:28,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:28,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:28,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:49:28,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:49:28,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:28,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:28,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:28,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:29,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:29,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:49:29,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:29,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:29,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:29,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:29,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:29,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:49:29,013 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 03:49:29,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693637916] [2020-10-29 03:49:29,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:49:29,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:49:29,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787960703] [2020-10-29 03:49:29,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:49:29,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:29,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:49:29,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:49:29,046 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 4 states. [2020-10-29 03:49:29,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:29,216 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2020-10-29 03:49:29,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:49:29,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-29 03:49:29,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:29,226 INFO L225 Difference]: With dead ends: 49 [2020-10-29 03:49:29,226 INFO L226 Difference]: Without dead ends: 22 [2020-10-29 03:49:29,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:49:29,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-29 03:49:29,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-29 03:49:29,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-29 03:49:29,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-10-29 03:49:29,283 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 17 [2020-10-29 03:49:29,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:29,283 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-10-29 03:49:29,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:49:29,284 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-10-29 03:49:29,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 03:49:29,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:29,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:29,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:49:29,286 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:29,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:29,286 INFO L82 PathProgramCache]: Analyzing trace with hash -577359468, now seen corresponding path program 1 times [2020-10-29 03:49:29,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:29,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642249740] [2020-10-29 03:49:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:29,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:29,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:29,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:29,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:49:29,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:49:29,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-29 03:49:29,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:29,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:49:29,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:29,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 03:49:29,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:29,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:29,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:29,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:29,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:29,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:29,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 03:49:29,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:29,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:29,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:49:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:49:29,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642249740] [2020-10-29 03:49:29,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:29,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:49:29,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895644537] [2020-10-29 03:49:29,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:49:29,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:29,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:49:29,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:49:29,651 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 5 states. [2020-10-29 03:49:29,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:29,754 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2020-10-29 03:49:29,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:49:29,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-29 03:49:29,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:29,757 INFO L225 Difference]: With dead ends: 41 [2020-10-29 03:49:29,758 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 03:49:29,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:49:29,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 03:49:29,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-10-29 03:49:29,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-29 03:49:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-29 03:49:29,772 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 18 [2020-10-29 03:49:29,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:29,772 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-29 03:49:29,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:49:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-29 03:49:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 03:49:29,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:29,774 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:29,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:49:29,774 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:29,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:29,775 INFO L82 PathProgramCache]: Analyzing trace with hash -446889165, now seen corresponding path program 1 times [2020-10-29 03:49:29,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:29,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520972909] [2020-10-29 03:49:29,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:29,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:29,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:29,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:30,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:30,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:49:30,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:49:30,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-10-29 03:49:30,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:30,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:30,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:49:30,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:30,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:49:30,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:49:30,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:30,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:30,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:30,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:30,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:30,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:49:30,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:30,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:30,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:30,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:30,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:30,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:49:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 03:49:30,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520972909] [2020-10-29 03:49:30,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:30,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:49:30,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372059748] [2020-10-29 03:49:30,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:49:30,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:30,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:49:30,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:49:30,783 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 10 states. [2020-10-29 03:49:31,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:31,117 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-10-29 03:49:31,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:49:31,118 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-29 03:49:31,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:31,120 INFO L225 Difference]: With dead ends: 40 [2020-10-29 03:49:31,120 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 03:49:31,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:49:31,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 03:49:31,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-29 03:49:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 03:49:31,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-29 03:49:31,132 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 20 [2020-10-29 03:49:31,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:31,132 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-29 03:49:31,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:49:31,132 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-29 03:49:31,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 03:49:31,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:31,133 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:31,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:49:31,134 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:31,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:31,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1420739774, now seen corresponding path program 2 times [2020-10-29 03:49:31,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:31,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720809259] [2020-10-29 03:49:31,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:31,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:31,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:31,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:31,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:31,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 03:49:31,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:49:31,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 804 [2020-10-29 03:49:31,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:31,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:31,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:49:31,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:31,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 03:49:31,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:32,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:32,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:32,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:32,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:32,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:32,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:49:32,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:32,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:32,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:32,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 03:49:32,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720809259] [2020-10-29 03:49:32,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:32,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:49:32,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278766090] [2020-10-29 03:49:32,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:49:32,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:32,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:49:32,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:49:32,199 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 11 states. [2020-10-29 03:49:32,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:32,527 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-10-29 03:49:32,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:49:32,527 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-29 03:49:32,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:32,530 INFO L225 Difference]: With dead ends: 48 [2020-10-29 03:49:32,530 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 03:49:32,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:49:32,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 03:49:32,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2020-10-29 03:49:32,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:49:32,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-29 03:49:32,541 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 21 [2020-10-29 03:49:32,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:32,541 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-29 03:49:32,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:49:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-29 03:49:32,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:49:32,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:32,543 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:32,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:49:32,543 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:32,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:32,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1545337581, now seen corresponding path program 3 times [2020-10-29 03:49:32,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:32,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847423609] [2020-10-29 03:49:32,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:32,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:32,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:32,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:33,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:33,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:49:33,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:49:33,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-29 03:49:33,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:33,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:33,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:49:33,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:33,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:49:33,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:33,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:33,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:33,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:33,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:33,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:33,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:49:33,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:33,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:33,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:33,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:33,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:33,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:33,796 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 03:49:33,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847423609] [2020-10-29 03:49:33,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:33,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:49:33,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920761655] [2020-10-29 03:49:33,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:49:33,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:33,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:49:33,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:49:33,799 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 12 states. [2020-10-29 03:49:34,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:34,172 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-10-29 03:49:34,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:49:34,173 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-10-29 03:49:34,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:34,174 INFO L225 Difference]: With dead ends: 53 [2020-10-29 03:49:34,174 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 03:49:34,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:49:34,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 03:49:34,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2020-10-29 03:49:34,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-29 03:49:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-29 03:49:34,184 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 22 [2020-10-29 03:49:34,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:34,185 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-29 03:49:34,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:49:34,185 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-29 03:49:34,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 03:49:34,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:34,186 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:34,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:49:34,186 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:34,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:34,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1112902302, now seen corresponding path program 4 times [2020-10-29 03:49:34,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:34,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833727823] [2020-10-29 03:49:34,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:34,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:34,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:35,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:35,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 03:49:35,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:49:35,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1070 [2020-10-29 03:49:35,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:35,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:35,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:49:35,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:35,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:49:35,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:35,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:35,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:35,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:35,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:35,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:35,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:49:35,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:35,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:35,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:35,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:35,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:35,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:49:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 03:49:35,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833727823] [2020-10-29 03:49:35,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:35,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:49:35,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052761535] [2020-10-29 03:49:35,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:49:35,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:35,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:49:35,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:49:35,642 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 13 states. [2020-10-29 03:49:36,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:36,214 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-10-29 03:49:36,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:49:36,215 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2020-10-29 03:49:36,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:36,216 INFO L225 Difference]: With dead ends: 49 [2020-10-29 03:49:36,216 INFO L226 Difference]: Without dead ends: 45 [2020-10-29 03:49:36,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:49:36,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-29 03:49:36,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2020-10-29 03:49:36,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-29 03:49:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-29 03:49:36,226 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 23 [2020-10-29 03:49:36,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:36,226 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-29 03:49:36,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:49:36,226 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-29 03:49:36,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 03:49:36,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:36,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:36,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:49:36,228 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:36,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:36,228 INFO L82 PathProgramCache]: Analyzing trace with hash 791061505, now seen corresponding path program 1 times [2020-10-29 03:49:36,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:36,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141973761] [2020-10-29 03:49:36,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:36,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:36,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:36,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 03:49:36,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:49:36,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-29 03:49:36,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:36,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:36,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:49:36,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:49:36,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 03:49:36,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:36,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:36,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:36,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:36,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:36,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:36,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:49:36,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:36,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:36,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:49:36,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 03:49:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:36,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:36,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:36,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:36,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:36,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:49:36,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:36,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:36,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:36,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:49:36,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:36,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-10-29 03:49:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 03:49:36,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141973761] [2020-10-29 03:49:36,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:36,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:49:36,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982288116] [2020-10-29 03:49:36,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:49:36,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:36,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:49:36,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:49:36,640 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 5 states. [2020-10-29 03:49:36,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:36,745 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-10-29 03:49:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:49:36,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-29 03:49:36,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:36,747 INFO L225 Difference]: With dead ends: 53 [2020-10-29 03:49:36,747 INFO L226 Difference]: Without dead ends: 35 [2020-10-29 03:49:36,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:49:36,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-29 03:49:36,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-10-29 03:49:36,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 03:49:36,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-29 03:49:36,762 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 27 [2020-10-29 03:49:36,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:36,765 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-29 03:49:36,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:49:36,765 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-29 03:49:36,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:49:36,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:36,766 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:36,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:49:36,766 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:36,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:36,768 INFO L82 PathProgramCache]: Analyzing trace with hash -424342254, now seen corresponding path program 2 times [2020-10-29 03:49:36,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:36,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814341322] [2020-10-29 03:49:36,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:36,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:36,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:36,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:37,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:37,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:49:37,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:49:37,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1104 [2020-10-29 03:49:37,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:37,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:49:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:37,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:49:37,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:38,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:38,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:38,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:38,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:38,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:38,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:49:38,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:38,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:38,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:38,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:38,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:38,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:38,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 03:49:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:38,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:38,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:38,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:38,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:38,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:49:38,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:38,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:38,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 03:49:38,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814341322] [2020-10-29 03:49:38,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:38,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:49:38,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212458992] [2020-10-29 03:49:38,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:49:38,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:38,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:49:38,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:49:38,174 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 12 states. [2020-10-29 03:49:38,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:38,630 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2020-10-29 03:49:38,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:49:38,631 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-10-29 03:49:38,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:38,632 INFO L225 Difference]: With dead ends: 50 [2020-10-29 03:49:38,632 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 03:49:38,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:49:38,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 03:49:38,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-29 03:49:38,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 03:49:38,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-29 03:49:38,644 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 28 [2020-10-29 03:49:38,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:38,645 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-29 03:49:38,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:49:38,645 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-29 03:49:38,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 03:49:38,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:38,647 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:38,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:49:38,647 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:38,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:38,648 INFO L82 PathProgramCache]: Analyzing trace with hash 552846881, now seen corresponding path program 3 times [2020-10-29 03:49:38,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:38,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294808466] [2020-10-29 03:49:38,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:38,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:38,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:38,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:39,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:39,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 03:49:39,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:49:39,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1160 [2020-10-29 03:49:39,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:39,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:49:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:39,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:49:39,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:40,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:40,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:40,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:40,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:40,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:40,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:49:40,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:40,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:40,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:40,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 03:49:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:40,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:40,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:40,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:40,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:40,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:49:40,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:40,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:40,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:49:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 03:49:40,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294808466] [2020-10-29 03:49:40,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:40,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:49:40,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636248752] [2020-10-29 03:49:40,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:49:40,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:40,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:49:40,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:49:40,104 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 13 states. [2020-10-29 03:49:40,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:40,776 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2020-10-29 03:49:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:49:40,776 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29 [2020-10-29 03:49:40,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:40,778 INFO L225 Difference]: With dead ends: 64 [2020-10-29 03:49:40,778 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 03:49:40,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:49:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 03:49:40,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 43. [2020-10-29 03:49:40,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 03:49:40,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-10-29 03:49:40,799 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 29 [2020-10-29 03:49:40,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:40,800 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-10-29 03:49:40,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:49:40,800 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-10-29 03:49:40,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 03:49:40,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:40,801 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:40,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:49:40,802 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:40,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:40,802 INFO L82 PathProgramCache]: Analyzing trace with hash 780938994, now seen corresponding path program 4 times [2020-10-29 03:49:40,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:40,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232639466] [2020-10-29 03:49:40,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:40,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:40,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:40,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:42,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:42,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:49:42,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:49:42,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1540 [2020-10-29 03:49:42,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:42,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:42,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:49:42,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:42,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:49:42,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:42,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:42,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:42,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:42,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:42,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:42,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:49:42,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:42,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:42,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:42,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 03:49:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:42,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:42,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:42,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:42,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:42,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:49:42,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:42,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:42,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:42,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:42,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:42,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 03:49:42,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232639466] [2020-10-29 03:49:42,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:42,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:49:42,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381019637] [2020-10-29 03:49:42,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:49:42,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:42,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:49:42,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:49:42,638 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 14 states. [2020-10-29 03:49:43,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:43,313 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2020-10-29 03:49:43,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:49:43,316 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2020-10-29 03:49:43,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:43,317 INFO L225 Difference]: With dead ends: 55 [2020-10-29 03:49:43,317 INFO L226 Difference]: Without dead ends: 51 [2020-10-29 03:49:43,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:49:43,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-29 03:49:43,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2020-10-29 03:49:43,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 03:49:43,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-29 03:49:43,336 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 30 [2020-10-29 03:49:43,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:43,336 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-29 03:49:43,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:49:43,336 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-29 03:49:43,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 03:49:43,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:43,340 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:43,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:49:43,340 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:43,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:43,344 INFO L82 PathProgramCache]: Analyzing trace with hash -494366398, now seen corresponding path program 5 times [2020-10-29 03:49:43,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:43,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013388654] [2020-10-29 03:49:43,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:43,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:43,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:43,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:43,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 03:49:43,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:49:43,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-29 03:49:43,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:43,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:43,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:49:43,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:43,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:49:43,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:43,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:43,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:43,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:43,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:43,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:43,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:49:43,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:43,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:43,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:43,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:49:43,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 03:49:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:43,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:43,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:43,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:43,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:43,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:49:43,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:43,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:43,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:43,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:49:43,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:43,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:43,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 03:49:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:43,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:43,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:43,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:43,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:43,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:49:43,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:43,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:43,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:43,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:49:43,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:43,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:43,915 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 03:49:43,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013388654] [2020-10-29 03:49:43,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:43,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:49:43,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893003643] [2020-10-29 03:49:43,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:49:43,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:43,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:49:43,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:49:43,919 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 6 states. [2020-10-29 03:49:44,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:44,018 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-10-29 03:49:44,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:49:44,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-10-29 03:49:44,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:44,020 INFO L225 Difference]: With dead ends: 68 [2020-10-29 03:49:44,020 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 03:49:44,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:49:44,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 03:49:44,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-29 03:49:44,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:49:44,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-29 03:49:44,036 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 35 [2020-10-29 03:49:44,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:44,037 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-29 03:49:44,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:49:44,037 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-29 03:49:44,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:49:44,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:44,038 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:44,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:49:44,039 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:44,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:44,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1891559564, now seen corresponding path program 6 times [2020-10-29 03:49:44,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:44,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469994576] [2020-10-29 03:49:44,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:44,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:44,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:44,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:44,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:49:44,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:49:44,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-29 03:49:44,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:44,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:44,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:49:44,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:49:44,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:49:44,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:44,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:44,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:44,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:44,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:44,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:44,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:49:44,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:44,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:44,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:44,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:44,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:44,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:44,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 03:49:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:44,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:44,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:44,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:44,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:44,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:49:44,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:44,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:44,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:44,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:49:44,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:44,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:44,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:49:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:44,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:44,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:44,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:44,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:44,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:49:44,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:44,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:49:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:44,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-29 03:49:44,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469994576] [2020-10-29 03:49:44,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:44,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:49:44,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018554446] [2020-10-29 03:49:44,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:49:44,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:44,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:49:44,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:49:44,758 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 6 states. [2020-10-29 03:49:44,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:44,920 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-10-29 03:49:44,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:49:44,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-29 03:49:44,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:44,923 INFO L225 Difference]: With dead ends: 69 [2020-10-29 03:49:44,923 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 03:49:44,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:49:44,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 03:49:44,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-29 03:49:44,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 03:49:44,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-10-29 03:49:44,950 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 36 [2020-10-29 03:49:44,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:44,953 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-10-29 03:49:44,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:49:44,953 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-10-29 03:49:44,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 03:49:44,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:44,955 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:44,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:49:44,955 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:44,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:44,956 INFO L82 PathProgramCache]: Analyzing trace with hash 8493409, now seen corresponding path program 7 times [2020-10-29 03:49:44,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:44,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889791820] [2020-10-29 03:49:44,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:45,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:45,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:45,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:46,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:46,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 03:49:46,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:49:46,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1844 [2020-10-29 03:49:46,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:46,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:49:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:46,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:49:46,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:47,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:47,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:47,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:47,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:47,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:47,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:49:47,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:47,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:47,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:47,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:47,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:47,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:47,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 03:49:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:47,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:47,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:47,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:47,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:47,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:49:47,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:47,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:47,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:49:47,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:49:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:47,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:47,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:47,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:47,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:47,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:49:47,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:47,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:47,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:47,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:47,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:47,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:49:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 03:49:47,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889791820] [2020-10-29 03:49:47,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:47,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:49:47,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458489030] [2020-10-29 03:49:47,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:49:47,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:47,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:49:47,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:49:47,125 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 14 states. [2020-10-29 03:49:47,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:47,719 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-10-29 03:49:47,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:49:47,720 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-10-29 03:49:47,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:47,722 INFO L225 Difference]: With dead ends: 62 [2020-10-29 03:49:47,722 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:49:47,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:49:47,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:49:47,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-29 03:49:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 03:49:47,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-10-29 03:49:47,747 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 37 [2020-10-29 03:49:47,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:47,748 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-10-29 03:49:47,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:49:47,748 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-10-29 03:49:47,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:49:47,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:47,749 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:47,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:49:47,750 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:47,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:47,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1219406572, now seen corresponding path program 8 times [2020-10-29 03:49:47,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:47,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545663177] [2020-10-29 03:49:47,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:47,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:47,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:48,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:49,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:49,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:49:49,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:49:49,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2067 [2020-10-29 03:49:49,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:49,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:49,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:49:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:49:49,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:50,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:50,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:50,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:50,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:50,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:50,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:49:50,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:50,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:50,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:50,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:50,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:50,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:50,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 03:49:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:50,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:50,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:50,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:50,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:50,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:49:50,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:50,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:50,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:50,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:50,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:50,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:50,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:49:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:50,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:50,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:50,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:50,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:50,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:49:50,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:50,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:50,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:50,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:50,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:50,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 03:49:50,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545663177] [2020-10-29 03:49:50,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:50,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:49:50,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652373512] [2020-10-29 03:49:50,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:49:50,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:50,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:49:50,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:49:50,142 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 15 states. [2020-10-29 03:49:50,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:50,980 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-29 03:49:50,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:49:50,980 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-10-29 03:49:50,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:50,982 INFO L225 Difference]: With dead ends: 80 [2020-10-29 03:49:50,982 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 03:49:50,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:49:50,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 03:49:50,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 55. [2020-10-29 03:49:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:49:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-10-29 03:49:50,998 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 38 [2020-10-29 03:49:50,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:50,999 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-10-29 03:49:50,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:49:50,999 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-10-29 03:49:50,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 03:49:51,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:51,000 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:51,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:49:51,000 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:51,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:51,001 INFO L82 PathProgramCache]: Analyzing trace with hash -629600319, now seen corresponding path program 9 times [2020-10-29 03:49:51,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:51,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226098874] [2020-10-29 03:49:51,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:51,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:51,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:51,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:53,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:53,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 03:49:53,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:49:53,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2126 [2020-10-29 03:49:53,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:53,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:53,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:49:53,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:53,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 03:49:53,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:53,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:53,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:53,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:53,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:53,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:53,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:49:53,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:53,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:53,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:53,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:53,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:53,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:53,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 03:49:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:53,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:53,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:53,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:53,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:53,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:49:53,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:53,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:53,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:53,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:53,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:53,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 03:49:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:53,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:53,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:53,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:53,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:53,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:49:53,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:53,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:53,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:53,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:53,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:53,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:53,518 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 03:49:53,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226098874] [2020-10-29 03:49:53,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:53,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:49:53,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262197887] [2020-10-29 03:49:53,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:49:53,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:53,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:49:53,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:49:53,522 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 16 states. [2020-10-29 03:49:54,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:54,201 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-10-29 03:49:54,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:49:54,202 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2020-10-29 03:49:54,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:54,203 INFO L225 Difference]: With dead ends: 67 [2020-10-29 03:49:54,203 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 03:49:54,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:49:54,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 03:49:54,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 47. [2020-10-29 03:49:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 03:49:54,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-10-29 03:49:54,216 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 39 [2020-10-29 03:49:54,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:54,216 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-10-29 03:49:54,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:49:54,216 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-10-29 03:49:54,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:49:54,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:54,217 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:54,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:49:54,217 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:54,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:54,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1639752173, now seen corresponding path program 10 times [2020-10-29 03:49:54,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:54,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169881121] [2020-10-29 03:49:54,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:54,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:54,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:54,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:54,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:49:54,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:49:54,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-10-29 03:49:54,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:54,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:49:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 03:49:54,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:54,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:54,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:54,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:54,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:54,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:54,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:49:54,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:54,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:54,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:54,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:54,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:54,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:54,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 03:49:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:54,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:54,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:54,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:54,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:54,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:49:54,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:54,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:54,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:54,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:49:54,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:54,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:54,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:49:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:54,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:54,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:54,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:54,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:54,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:49:54,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:54,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:54,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:54,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:49:54,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:54,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:54,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:49:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:54,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:54,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:54,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:54,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:54,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:49:54,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:54,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:49:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:54,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-29 03:49:54,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169881121] [2020-10-29 03:49:54,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:54,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:49:54,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142913130] [2020-10-29 03:49:54,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:49:54,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:54,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:49:54,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:49:54,986 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 7 states. [2020-10-29 03:49:55,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:55,082 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2020-10-29 03:49:55,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:49:55,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-10-29 03:49:55,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:55,083 INFO L225 Difference]: With dead ends: 85 [2020-10-29 03:49:55,084 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:49:55,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:49:55,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:49:55,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-29 03:49:55,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 03:49:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-10-29 03:49:55,094 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 44 [2020-10-29 03:49:55,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:55,094 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-10-29 03:49:55,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:49:55,094 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-10-29 03:49:55,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 03:49:55,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:55,095 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:55,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:49:55,095 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:55,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:55,096 INFO L82 PathProgramCache]: Analyzing trace with hash -400969695, now seen corresponding path program 11 times [2020-10-29 03:49:55,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:55,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587901097] [2020-10-29 03:49:55,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:55,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:55,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:55,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:55,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 03:49:55,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:49:55,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 872 [2020-10-29 03:49:55,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:55,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:49:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 03:49:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 03:49:55,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:56,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:56,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:56,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:56,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:56,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:56,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:49:56,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:56,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:56,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:56,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:56,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:56,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:56,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 03:49:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:56,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:56,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:56,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:56,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:56,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:49:56,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:56,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:56,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:56,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:49:56,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:56,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:56,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:49:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:56,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:56,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:56,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:56,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:56,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:49:56,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:56,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:49:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:56,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:56,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:49:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:56,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:56,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:56,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:56,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:56,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:49:56,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:56,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:56,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:56,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:49:56,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:56,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:56,067 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-29 03:49:56,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587901097] [2020-10-29 03:49:56,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:56,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:49:56,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931563517] [2020-10-29 03:49:56,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:49:56,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:56,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:49:56,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:49:56,070 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 7 states. [2020-10-29 03:49:56,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:56,210 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2020-10-29 03:49:56,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:49:56,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-10-29 03:49:56,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:56,213 INFO L225 Difference]: With dead ends: 85 [2020-10-29 03:49:56,214 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 03:49:56,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:49:56,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 03:49:56,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-10-29 03:49:56,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 03:49:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-10-29 03:49:56,233 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 45 [2020-10-29 03:49:56,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:56,234 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-10-29 03:49:56,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:49:56,234 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-10-29 03:49:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:49:56,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:56,234 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:56,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:49:56,235 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:56,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:56,235 INFO L82 PathProgramCache]: Analyzing trace with hash 2143392434, now seen corresponding path program 12 times [2020-10-29 03:49:56,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:56,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957641971] [2020-10-29 03:49:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:56,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:56,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:57,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:58,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:58,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:49:58,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:49:58,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1902 [2020-10-29 03:49:58,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:58,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:49:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:49:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:49:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:58,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:58,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:58,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:58,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:58,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:58,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:49:58,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:58,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:58,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:58,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 03:49:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:58,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:58,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:58,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:58,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:58,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:49:58,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:58,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:58,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:58,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:58,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:58,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:49:58,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 03:49:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:58,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:58,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:58,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:58,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:58,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:49:58,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:58,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:58,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:58,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:49:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:58,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:58,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:58,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:49:58,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:58,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:49:58,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:58,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:49:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:49:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 03:49:58,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957641971] [2020-10-29 03:49:58,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:58,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:49:58,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036987876] [2020-10-29 03:49:58,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:49:58,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:58,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:49:58,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:49:58,527 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 16 states. [2020-10-29 03:49:59,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:59,132 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-10-29 03:49:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:49:59,133 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2020-10-29 03:49:59,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:59,134 INFO L225 Difference]: With dead ends: 74 [2020-10-29 03:49:59,134 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 03:49:59,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:49:59,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 03:49:59,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2020-10-29 03:49:59,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 03:49:59,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2020-10-29 03:49:59,152 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 46 [2020-10-29 03:49:59,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:59,154 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2020-10-29 03:49:59,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:49:59,154 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2020-10-29 03:49:59,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 03:49:59,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:59,155 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:59,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:49:59,155 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:59,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:59,156 INFO L82 PathProgramCache]: Analyzing trace with hash -585760191, now seen corresponding path program 13 times [2020-10-29 03:49:59,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:59,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108104252] [2020-10-29 03:49:59,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:59,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:59,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:00,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:01,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:01,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 03:50:01,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:01,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1937 [2020-10-29 03:50:01,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:01,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:01,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:50:01,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:50:01,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 03:50:01,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:01,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:01,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:01,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:01,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:01,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:01,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:01,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:01,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:01,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:01,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:01,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:01,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:01,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:50:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:01,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:01,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:01,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:01,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:01,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:01,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:01,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:01,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:01,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:01,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:01,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:01,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:50:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:01,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:01,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:01,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:01,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:01,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:50:01,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:01,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:01,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:01,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:01,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:01,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:01,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 03:50:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:01,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:01,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:01,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:01,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:01,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:01,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:01,512 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 03:50:01,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108104252] [2020-10-29 03:50:01,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:01,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:50:01,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754996711] [2020-10-29 03:50:01,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:50:01,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:01,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:50:01,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:50:01,518 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 17 states. [2020-10-29 03:50:02,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:02,502 INFO L93 Difference]: Finished difference Result 95 states and 107 transitions. [2020-10-29 03:50:02,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:50:02,503 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-10-29 03:50:02,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:02,504 INFO L225 Difference]: With dead ends: 95 [2020-10-29 03:50:02,504 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 03:50:02,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:50:02,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 03:50:02,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 67. [2020-10-29 03:50:02,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 03:50:02,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2020-10-29 03:50:02,533 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 47 [2020-10-29 03:50:02,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:02,533 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2020-10-29 03:50:02,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:50:02,534 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2020-10-29 03:50:02,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 03:50:02,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:02,535 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:02,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:50:02,535 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:02,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:02,535 INFO L82 PathProgramCache]: Analyzing trace with hash 709854354, now seen corresponding path program 14 times [2020-10-29 03:50:02,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:02,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479294917] [2020-10-29 03:50:02,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:02,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:02,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:03,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:04,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:04,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:50:04,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:04,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2426 [2020-10-29 03:50:04,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:04,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:04,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:50:04,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:50:04,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:50:04,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:05,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:05,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:05,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:05,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:05,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:05,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:05,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:05,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:05,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:05,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:05,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:05,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:05,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 03:50:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:05,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:05,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:05,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:05,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:05,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:05,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:05,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:05,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:05,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:50:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:05,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:05,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:05,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:05,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:05,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:05,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:05,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:05,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:05,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:50:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:05,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:05,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:05,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:05,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:05,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:05,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:05,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:05,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 03:50:05,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479294917] [2020-10-29 03:50:05,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:05,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:50:05,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030279019] [2020-10-29 03:50:05,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:50:05,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:05,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:50:05,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:50:05,401 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 18 states. [2020-10-29 03:50:06,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:06,246 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2020-10-29 03:50:06,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:50:06,252 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2020-10-29 03:50:06,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:06,253 INFO L225 Difference]: With dead ends: 79 [2020-10-29 03:50:06,253 INFO L226 Difference]: Without dead ends: 75 [2020-10-29 03:50:06,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:50:06,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-29 03:50:06,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 56. [2020-10-29 03:50:06,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 03:50:06,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-10-29 03:50:06,276 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 48 [2020-10-29 03:50:06,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:06,277 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-10-29 03:50:06,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:50:06,277 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-10-29 03:50:06,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 03:50:06,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:06,278 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:06,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:50:06,278 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:06,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:06,278 INFO L82 PathProgramCache]: Analyzing trace with hash 755529634, now seen corresponding path program 15 times [2020-10-29 03:50:06,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:06,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715494581] [2020-10-29 03:50:06,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:06,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:06,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:07,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:07,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 03:50:07,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:50:07,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-10-29 03:50:07,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:07,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:07,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:50:07,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 03:50:07,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:07,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:07,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:07,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:07,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:07,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:07,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:07,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:07,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:07,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:07,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:07,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 03:50:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:07,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:07,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:07,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:07,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:07,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:07,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:07,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:07,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:07,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:07,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:07,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:07,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 03:50:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:07,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:07,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:07,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:07,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:07,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:07,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:07,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:07,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:07,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:07,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:07,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:07,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:50:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:07,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:07,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:07,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:07,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:07,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:07,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:07,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:07,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:07,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:07,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:07,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:50:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:07,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:07,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:07,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:07,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:07,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:07,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:07,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:07,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:07,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:07,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:07,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:07,444 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 03:50:07,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715494581] [2020-10-29 03:50:07,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:07,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:50:07,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652614522] [2020-10-29 03:50:07,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:50:07,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:07,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:50:07,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:50:07,447 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 8 states. [2020-10-29 03:50:07,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:07,626 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2020-10-29 03:50:07,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:50:07,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-29 03:50:07,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:07,628 INFO L225 Difference]: With dead ends: 107 [2020-10-29 03:50:07,628 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:50:07,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:50:07,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:50:07,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2020-10-29 03:50:07,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 03:50:07,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-10-29 03:50:07,641 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 53 [2020-10-29 03:50:07,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:07,641 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-10-29 03:50:07,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:50:07,642 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-10-29 03:50:07,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 03:50:07,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:07,642 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:07,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:50:07,643 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:07,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:07,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1854591425, now seen corresponding path program 16 times [2020-10-29 03:50:07,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:07,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671695199] [2020-10-29 03:50:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:07,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:07,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:08,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:10,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:10,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 03:50:10,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:10,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2467 [2020-10-29 03:50:10,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:10,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:10,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:50:10,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:50:10,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 03:50:10,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:10,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:10,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:10,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:10,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:10,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:10,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:10,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:10,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:10,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:10,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:10,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:10,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:10,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 03:50:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:10,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:10,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:10,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:10,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:10,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:10,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:10,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:10,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:10,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:10,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:10,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:10,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:50:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:10,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:10,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:10,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:10,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:10,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:10,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:10,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:10,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:10,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:10,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:10,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:50:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:10,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:10,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:10,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:10,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:10,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:10,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:10,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:10,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:10,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:10,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:10,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:10,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:50:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:10,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:10,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:10,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:10,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:10,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:10,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:10,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:10,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 03:50:10,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671695199] [2020-10-29 03:50:10,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:10,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:50:10,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436697995] [2020-10-29 03:50:10,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:50:10,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:10,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:50:10,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:50:10,555 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 18 states. [2020-10-29 03:50:11,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:11,321 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-10-29 03:50:11,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:50:11,322 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 55 [2020-10-29 03:50:11,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:11,323 INFO L225 Difference]: With dead ends: 86 [2020-10-29 03:50:11,323 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 03:50:11,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:50:11,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 03:50:11,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2020-10-29 03:50:11,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-29 03:50:11,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2020-10-29 03:50:11,345 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 55 [2020-10-29 03:50:11,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:11,345 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2020-10-29 03:50:11,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:50:11,346 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2020-10-29 03:50:11,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:50:11,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:11,347 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:11,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:50:11,348 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:11,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:11,348 INFO L82 PathProgramCache]: Analyzing trace with hash -2126896396, now seen corresponding path program 17 times [2020-10-29 03:50:11,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:11,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569245179] [2020-10-29 03:50:11,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:11,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:11,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:13,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:13,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 03:50:13,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:13,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2397 [2020-10-29 03:50:13,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:13,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:13,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:50:13,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:50:13,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:50:13,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:14,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:14,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:14,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:14,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:14,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:14,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:14,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:14,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:14,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:14,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:14,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:14,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:14,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 03:50:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:14,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:14,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:14,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:14,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:14,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:14,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:14,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:14,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:14,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:14,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 03:50:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:14,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:14,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:14,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:14,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:14,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:14,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:14,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:14,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:14,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:50:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:14,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:14,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:14,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:14,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:14,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:14,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:14,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:14,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:14,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:50:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:14,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:14,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:14,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:14,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:14,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:50:14,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:14,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:14,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:14,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:14,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:14,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 47 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 03:50:14,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569245179] [2020-10-29 03:50:14,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:14,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:50:14,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979597681] [2020-10-29 03:50:14,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:50:14,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:14,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:50:14,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:50:14,335 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 19 states. [2020-10-29 03:50:15,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:15,605 INFO L93 Difference]: Finished difference Result 110 states and 124 transitions. [2020-10-29 03:50:15,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:50:15,606 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56 [2020-10-29 03:50:15,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:15,611 INFO L225 Difference]: With dead ends: 110 [2020-10-29 03:50:15,611 INFO L226 Difference]: Without dead ends: 106 [2020-10-29 03:50:15,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:50:15,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-29 03:50:15,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 79. [2020-10-29 03:50:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 03:50:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2020-10-29 03:50:15,636 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 56 [2020-10-29 03:50:15,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:15,638 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2020-10-29 03:50:15,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:50:15,638 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2020-10-29 03:50:15,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 03:50:15,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:15,645 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:15,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:50:15,646 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:15,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:15,646 INFO L82 PathProgramCache]: Analyzing trace with hash -998967263, now seen corresponding path program 18 times [2020-10-29 03:50:15,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:15,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095267073] [2020-10-29 03:50:15,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:15,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:15,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:16,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:18,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:18,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 03:50:18,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:18,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2955 [2020-10-29 03:50:18,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:18,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:18,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:50:18,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:50:18,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 03:50:18,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:19,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:19,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:19,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:19,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:19,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:19,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:19,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:19,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:19,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:19,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:50:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:19,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:19,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:19,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:19,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:19,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:19,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:19,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:19,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:19,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:50:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:19,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:19,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:19,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:19,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:19,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:19,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:19,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:19,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:19,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 03:50:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:19,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:19,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:19,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:19,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:19,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:19,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:19,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:19,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:19,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:19,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:50:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:19,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:19,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:19,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:19,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:19,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:19,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:19,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:19,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:19,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:19,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:19,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 8 proven. 54 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 03:50:19,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095267073] [2020-10-29 03:50:19,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:19,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:50:19,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469494684] [2020-10-29 03:50:19,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:50:19,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:19,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:50:19,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:50:19,247 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 20 states. [2020-10-29 03:50:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:20,408 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2020-10-29 03:50:20,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:50:20,409 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 57 [2020-10-29 03:50:20,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:20,410 INFO L225 Difference]: With dead ends: 91 [2020-10-29 03:50:20,410 INFO L226 Difference]: Without dead ends: 87 [2020-10-29 03:50:20,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:50:20,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-29 03:50:20,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 65. [2020-10-29 03:50:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:50:20,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-10-29 03:50:20,426 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 57 [2020-10-29 03:50:20,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:20,427 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-10-29 03:50:20,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:50:20,427 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-10-29 03:50:20,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 03:50:20,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:20,428 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:20,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:50:20,428 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:20,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:20,429 INFO L82 PathProgramCache]: Analyzing trace with hash 979106227, now seen corresponding path program 19 times [2020-10-29 03:50:20,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:20,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866533766] [2020-10-29 03:50:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:20,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:21,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:21,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 03:50:21,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:50:21,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1172 [2020-10-29 03:50:21,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:21,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:50:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:50:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:50:21,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:21,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:21,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:21,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:21,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:21,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:21,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:21,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:21,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:21,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:21,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 03:50:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:21,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:21,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:21,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:21,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:21,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:21,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:21,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:21,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:21,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:21,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:21,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:21,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:50:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:21,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:21,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:21,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:21,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:21,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:21,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:21,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:21,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:50:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:21,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:21,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:21,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:21,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:21,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:21,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:21,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:21,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:21,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:21,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:21,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:21,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:50:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:21,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:21,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:21,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:21,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:21,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:21,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:21,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:21,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:21,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:21,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:21,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:21,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:50:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:21,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:21,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:21,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:21,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:21,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:21,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:21,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:21,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-29 03:50:21,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866533766] [2020-10-29 03:50:21,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:21,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:50:21,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133329305] [2020-10-29 03:50:21,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:50:21,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:21,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:50:21,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:50:21,731 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 9 states. [2020-10-29 03:50:21,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:21,865 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2020-10-29 03:50:21,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:50:21,866 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-29 03:50:21,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:21,867 INFO L225 Difference]: With dead ends: 119 [2020-10-29 03:50:21,867 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:50:21,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:50:21,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:50:21,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-29 03:50:21,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 03:50:21,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2020-10-29 03:50:21,884 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 62 [2020-10-29 03:50:21,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:21,884 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2020-10-29 03:50:21,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:50:21,884 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2020-10-29 03:50:21,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 03:50:21,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:21,885 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:21,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:50:21,885 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:21,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:21,886 INFO L82 PathProgramCache]: Analyzing trace with hash -850189247, now seen corresponding path program 20 times [2020-10-29 03:50:21,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:21,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364078263] [2020-10-29 03:50:21,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:21,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:21,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:23,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:23,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 03:50:23,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:50:23,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1407 [2020-10-29 03:50:23,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:23,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:23,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:50:23,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:50:23,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:50:23,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:23,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:23,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:23,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:23,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:23,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:23,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:23,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:23,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:23,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:23,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:23,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:23,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:23,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 03:50:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:23,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:23,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:23,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:23,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:23,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:23,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:23,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:23,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:23,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 03:50:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:23,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:23,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:23,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:23,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:23,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:23,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:23,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:23,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:23,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:50:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:23,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:23,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:23,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:23,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:23,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:23,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:23,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:23,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:23,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:50:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:23,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:23,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:23,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:23,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:23,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:23,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:23,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:23,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:23,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:23,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:23,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:23,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:50:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:23,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:23,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:23,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:23,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:23,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:23,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:23,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:23,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-29 03:50:23,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364078263] [2020-10-29 03:50:23,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:23,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:50:23,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379440949] [2020-10-29 03:50:23,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:50:23,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:23,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:50:23,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:50:23,427 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand 9 states. [2020-10-29 03:50:23,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:23,614 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2020-10-29 03:50:23,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:50:23,615 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-10-29 03:50:23,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:23,616 INFO L225 Difference]: With dead ends: 117 [2020-10-29 03:50:23,616 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 03:50:23,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:50:23,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 03:50:23,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2020-10-29 03:50:23,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 03:50:23,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2020-10-29 03:50:23,629 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 63 [2020-10-29 03:50:23,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:23,630 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2020-10-29 03:50:23,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:50:23,630 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2020-10-29 03:50:23,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:50:23,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:23,631 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:23,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:50:23,631 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:23,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:23,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1372168274, now seen corresponding path program 21 times [2020-10-29 03:50:23,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:23,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346792430] [2020-10-29 03:50:23,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:23,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:23,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:24,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:26,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:26,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 03:50:26,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:26,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2873 [2020-10-29 03:50:26,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:26,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:50:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:50:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 03:50:26,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:26,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:26,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:26,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:26,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:26,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:26,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:26,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:26,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:26,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:26,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:26,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:26,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:27,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:50:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:27,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:27,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:27,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:27,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:27,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:27,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:27,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:27,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:27,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:50:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:27,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:27,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:27,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:27,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:27,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:27,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:27,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:27,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:27,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:27,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:27,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:27,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 03:50:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:27,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:27,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:27,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:27,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:27,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:27,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:27,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:27,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:27,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:50:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:27,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:27,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:27,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:27,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:27,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:27,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:27,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:27,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:27,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:27,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:27,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:27,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:50:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:27,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:27,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:27,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:27,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:27,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:27,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:27,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:27,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:27,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:27,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:27,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 10 proven. 61 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-29 03:50:27,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346792430] [2020-10-29 03:50:27,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:27,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:50:27,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603005160] [2020-10-29 03:50:27,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:50:27,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:27,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:50:27,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:50:27,049 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 20 states. [2020-10-29 03:50:28,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:28,005 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2020-10-29 03:50:28,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:50:28,006 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2020-10-29 03:50:28,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:28,007 INFO L225 Difference]: With dead ends: 98 [2020-10-29 03:50:28,007 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 03:50:28,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:50:28,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 03:50:28,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-10-29 03:50:28,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 03:50:28,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2020-10-29 03:50:28,033 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 64 [2020-10-29 03:50:28,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:28,033 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2020-10-29 03:50:28,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:50:28,033 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2020-10-29 03:50:28,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 03:50:28,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:28,036 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:28,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:50:28,036 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:28,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:28,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1545774689, now seen corresponding path program 22 times [2020-10-29 03:50:28,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:28,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769854894] [2020-10-29 03:50:28,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:28,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:28,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:29,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:31,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:31,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 03:50:31,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:31,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3120 [2020-10-29 03:50:31,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:31,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:31,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:50:31,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:50:31,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 03:50:31,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:31,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:31,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:31,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:31,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:31,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:31,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:31,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:31,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:31,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:31,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:31,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:50:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:31,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:31,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:31,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:31,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:31,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:31,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:31,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:31,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:31,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:50:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:31,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:31,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:31,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:31,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:31,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:31,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:31,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:31,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:31,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:50:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:31,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:31,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:31,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:31,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:31,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:31,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:31,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:31,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:31,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 03:50:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:31,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:31,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:31,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:31,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:31,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:31,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:31,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:31,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:31,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:31,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:50:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:31,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:31,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:31,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:31,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:31,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:31,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:31,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:31,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:31,799 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 10 proven. 68 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-29 03:50:31,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769854894] [2020-10-29 03:50:31,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:31,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:50:31,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548457433] [2020-10-29 03:50:31,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:50:31,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:31,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:50:31,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:50:31,801 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 21 states. [2020-10-29 03:50:33,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:33,061 INFO L93 Difference]: Finished difference Result 124 states and 140 transitions. [2020-10-29 03:50:33,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:50:33,062 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 65 [2020-10-29 03:50:33,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:33,063 INFO L225 Difference]: With dead ends: 124 [2020-10-29 03:50:33,063 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 03:50:33,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=776, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:50:33,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 03:50:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 91. [2020-10-29 03:50:33,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 03:50:33,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-10-29 03:50:33,084 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 65 [2020-10-29 03:50:33,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:33,084 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-10-29 03:50:33,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:50:33,084 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-10-29 03:50:33,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 03:50:33,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:33,085 INFO L422 BasicCegarLoop]: trace histogram [8, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:33,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:50:33,086 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:33,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:33,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1662361038, now seen corresponding path program 23 times [2020-10-29 03:50:33,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:33,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204728388] [2020-10-29 03:50:33,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:33,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:33,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:34,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:36,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:36,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:50:36,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:36,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3739 [2020-10-29 03:50:36,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:36,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:36,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:50:36,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:50:36,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 03:50:36,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:37,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:37,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:37,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:37,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:37,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:37,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:37,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:37,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:37,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:37,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:50:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:37,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:37,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:37,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:37,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:37,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:37,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:37,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:37,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:37,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:50:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:37,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:37,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:37,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:37,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:37,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:37,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:37,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:37,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:37,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:50:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:37,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:37,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:37,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:37,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:37,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:37,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:37,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:37,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:37,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:50:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:37,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:37,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:37,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:37,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:37,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:37,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:37,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:37,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:37,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:37,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:37,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:37,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:50:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:37,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:37,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:37,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:37,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:37,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:37,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:37,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:37,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 10 proven. 76 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-29 03:50:37,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204728388] [2020-10-29 03:50:37,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:37,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:50:37,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959040156] [2020-10-29 03:50:37,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:50:37,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:37,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:50:37,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:50:37,464 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 22 states. [2020-10-29 03:50:38,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:38,824 INFO L93 Difference]: Finished difference Result 103 states and 112 transitions. [2020-10-29 03:50:38,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:50:38,824 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 66 [2020-10-29 03:50:38,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:38,825 INFO L225 Difference]: With dead ends: 103 [2020-10-29 03:50:38,825 INFO L226 Difference]: Without dead ends: 99 [2020-10-29 03:50:38,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=103, Invalid=889, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:50:38,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-29 03:50:38,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2020-10-29 03:50:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 03:50:38,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2020-10-29 03:50:38,841 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 66 [2020-10-29 03:50:38,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:38,841 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2020-10-29 03:50:38,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:50:38,841 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2020-10-29 03:50:38,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 03:50:38,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:38,842 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:38,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:50:38,842 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:38,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:38,843 INFO L82 PathProgramCache]: Analyzing trace with hash -570173950, now seen corresponding path program 24 times [2020-10-29 03:50:38,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:38,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315356386] [2020-10-29 03:50:38,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:38,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:38,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:40,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:40,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 03:50:40,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:50:40,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1468 [2020-10-29 03:50:40,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:40,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:50:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:50:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:50:40,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:40,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:40,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:40,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:40,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:40,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:40,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:40,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:40,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:40,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:40,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:40,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:40,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:40,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:50:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:40,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:40,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:40,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:40,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:40,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:40,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:40,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:40,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:40,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:50:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:40,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:40,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:40,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:40,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:40,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:40,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:40,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:40,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:40,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:40,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:40,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:40,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 03:50:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:40,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:40,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:40,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:40,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:40,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:40,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:40,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:40,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:40,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:40,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:40,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:40,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:50:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:40,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:40,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:40,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:40,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:40,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:40,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:40,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:40,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:40,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:50:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:40,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:40,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:40,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:40,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:40,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:40,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:40,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:40,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:40,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:40,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:40,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:40,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:50:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:40,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:40,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:40,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:40,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:40,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:50:40,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:40,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:40,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:40,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:40,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:40,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-10-29 03:50:40,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315356386] [2020-10-29 03:50:40,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:40,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:50:40,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77268162] [2020-10-29 03:50:40,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:50:40,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:40,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:50:40,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:50:40,450 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand 10 states. [2020-10-29 03:50:40,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:40,595 INFO L93 Difference]: Finished difference Result 136 states and 140 transitions. [2020-10-29 03:50:40,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:50:40,596 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-10-29 03:50:40,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:40,597 INFO L225 Difference]: With dead ends: 136 [2020-10-29 03:50:40,597 INFO L226 Difference]: Without dead ends: 75 [2020-10-29 03:50:40,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:50:40,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-29 03:50:40,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-29 03:50:40,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:50:40,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2020-10-29 03:50:40,610 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 71 [2020-10-29 03:50:40,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:40,610 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2020-10-29 03:50:40,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:50:40,610 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2020-10-29 03:50:40,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 03:50:40,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:40,611 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:40,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:50:40,611 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:40,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:40,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1043901236, now seen corresponding path program 25 times [2020-10-29 03:50:40,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:40,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300716064] [2020-10-29 03:50:40,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:40,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:40,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:42,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:42,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 03:50:42,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:50:42,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1709 [2020-10-29 03:50:42,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:42,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:50:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:50:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:50:42,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:42,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:42,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:42,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:42,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:42,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:42,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:42,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:42,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:42,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:42,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:42,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:42,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:42,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:50:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:42,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:42,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:42,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:42,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:42,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:50:42,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:42,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:42,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:42,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:42,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:42,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:42,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:50:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:42,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:42,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:42,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:42,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:42,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:50:42,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:42,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:42,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:42,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:42,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:42,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:50:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:42,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:42,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:42,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:42,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:42,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:42,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:42,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:42,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:42,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:42,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:42,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:42,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 03:50:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:42,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:42,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:42,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:42,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:42,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:42,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:42,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:42,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:42,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:42,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:42,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:42,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:50:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:42,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:42,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:42,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:42,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:42,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:42,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:42,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:42,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:42,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:42,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:42,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:42,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:50:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:42,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:42,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:42,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:42,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:42,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:42,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:42,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:50:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:42,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-29 03:50:42,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300716064] [2020-10-29 03:50:42,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:42,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:50:42,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743369277] [2020-10-29 03:50:42,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:50:42,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:42,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:50:42,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:50:42,459 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 10 states. [2020-10-29 03:50:42,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:42,694 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2020-10-29 03:50:42,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:50:42,695 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2020-10-29 03:50:42,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:42,696 INFO L225 Difference]: With dead ends: 133 [2020-10-29 03:50:42,697 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 03:50:42,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:50:42,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 03:50:42,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-10-29 03:50:42,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-29 03:50:42,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-10-29 03:50:42,711 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 72 [2020-10-29 03:50:42,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:42,711 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-10-29 03:50:42,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:50:42,711 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-10-29 03:50:42,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 03:50:42,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:42,712 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:42,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:50:42,712 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:42,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:42,714 INFO L82 PathProgramCache]: Analyzing trace with hash 825197089, now seen corresponding path program 26 times [2020-10-29 03:50:42,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:42,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474701590] [2020-10-29 03:50:42,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:42,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:42,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:43,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:46,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:46,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 03:50:46,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:46,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3989 [2020-10-29 03:50:46,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:46,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:50:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:50:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 03:50:46,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:47,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:47,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:47,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:47,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:47,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:47,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:47,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:47,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:47,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:47,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:50:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:47,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:47,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:47,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:47,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:47,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:47,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:47,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:47,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:47,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:47,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:47,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:47,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:50:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:47,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:47,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:47,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:47,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:47,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:47,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:47,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:47,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:47,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:50:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:47,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:47,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:47,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:47,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:47,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:47,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:47,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:47,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:47,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:47,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:47,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:47,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:50:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:47,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:47,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:47,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:47,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:47,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:47,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:47,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:47,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:47,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:50:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:47,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:47,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:47,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:47,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:47,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:47,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:47,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:47,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:47,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:47,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:47,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:47,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 03:50:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:47,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:47,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:47,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:47,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:47,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:47,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:47,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:47,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:47,312 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 12 proven. 85 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 03:50:47,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474701590] [2020-10-29 03:50:47,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:47,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:50:47,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131596596] [2020-10-29 03:50:47,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:50:47,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:47,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:50:47,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:50:47,314 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 22 states. [2020-10-29 03:50:48,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:48,532 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-10-29 03:50:48,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:50:48,533 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 73 [2020-10-29 03:50:48,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:48,534 INFO L225 Difference]: With dead ends: 110 [2020-10-29 03:50:48,534 INFO L226 Difference]: Without dead ends: 106 [2020-10-29 03:50:48,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=965, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:50:48,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-29 03:50:48,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2020-10-29 03:50:48,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-29 03:50:48,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2020-10-29 03:50:48,557 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 73 [2020-10-29 03:50:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:48,557 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2020-10-29 03:50:48,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:50:48,557 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2020-10-29 03:50:48,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 03:50:48,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:48,558 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:48,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:50:48,559 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:48,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:48,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1659664172, now seen corresponding path program 27 times [2020-10-29 03:50:48,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:48,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136143745] [2020-10-29 03:50:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:48,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:48,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:49,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:52,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:52,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 03:50:52,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:52,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4174 [2020-10-29 03:50:52,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:52,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:50:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:50:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 03:50:52,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:53,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:53,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:53,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:53,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:53,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:53,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:53,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:53,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:53,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:53,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 03:50:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:53,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:53,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:53,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:53,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:53,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:53,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:53,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:53,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:53,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:53,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:53,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:53,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:50:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:53,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:53,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:53,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:53,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:53,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:53,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:53,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:53,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:53,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:53,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:53,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:53,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:50:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:53,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:53,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:53,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:53,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:53,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:53,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:53,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:53,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:53,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:53,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:53,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:53,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:50:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:53,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:53,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:53,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:53,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:53,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:53,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:53,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:53,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:53,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:50:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:53,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:53,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:53,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:53,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:53,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:53,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:53,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:53,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:53,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:53,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 03:50:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:53,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:53,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:53,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:53,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:53,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:53,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:53,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:53,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 12 proven. 93 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 03:50:53,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136143745] [2020-10-29 03:50:53,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:53,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:50:53,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128658692] [2020-10-29 03:50:53,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:50:53,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:53,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:50:53,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:50:53,508 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand 23 states. [2020-10-29 03:50:54,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:54,880 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2020-10-29 03:50:54,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:50:54,881 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 74 [2020-10-29 03:50:54,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:54,883 INFO L225 Difference]: With dead ends: 136 [2020-10-29 03:50:54,883 INFO L226 Difference]: Without dead ends: 132 [2020-10-29 03:50:54,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:50:54,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-29 03:50:54,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 103. [2020-10-29 03:50:54,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 03:50:54,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2020-10-29 03:50:54,908 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 74 [2020-10-29 03:50:54,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:54,908 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2020-10-29 03:50:54,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:50:54,909 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2020-10-29 03:50:54,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 03:50:54,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:54,910 INFO L422 BasicCegarLoop]: trace histogram [9, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:54,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:50:54,910 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:54,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:54,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1380951935, now seen corresponding path program 28 times [2020-10-29 03:50:54,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:54,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288115354] [2020-10-29 03:50:54,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:54,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:54,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:56,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:59,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:59,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 03:50:59,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:59,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4679 [2020-10-29 03:50:59,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:59,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:50:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:50:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 03:50:59,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:00,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:00,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:00,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:00,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:00,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:00,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:00,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:00,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:00,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:00,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:51:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:00,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:00,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:00,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:00,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:00,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:00,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:00,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:00,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:00,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:00,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 03:51:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:00,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:00,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:00,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:00,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:00,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:00,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:00,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:00,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:00,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:51:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:00,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:00,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:00,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:00,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:00,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:00,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:00,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:00,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:00,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:51:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:00,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:00,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:00,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:00,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:00,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:00,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:00,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:00,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:00,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:00,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:00,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:00,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:51:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:00,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:00,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:00,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:00,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:00,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:00,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:00,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:00,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:00,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:51:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:00,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:00,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:00,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:00,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:00,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:00,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:00,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:00,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:00,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:00,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:00,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 12 proven. 102 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 03:51:00,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288115354] [2020-10-29 03:51:00,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:00,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:51:00,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315753603] [2020-10-29 03:51:00,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:51:00,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:00,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:51:00,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:51:00,334 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand 24 states. [2020-10-29 03:51:01,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:01,701 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2020-10-29 03:51:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:51:01,701 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 75 [2020-10-29 03:51:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:01,703 INFO L225 Difference]: With dead ends: 115 [2020-10-29 03:51:01,703 INFO L226 Difference]: Without dead ends: 111 [2020-10-29 03:51:01,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:51:01,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-29 03:51:01,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 83. [2020-10-29 03:51:01,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:51:01,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-10-29 03:51:01,727 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 75 [2020-10-29 03:51:01,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:01,728 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-10-29 03:51:01,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:51:01,728 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-10-29 03:51:01,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 03:51:01,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:01,731 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:01,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:51:01,732 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:01,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:01,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1165877933, now seen corresponding path program 29 times [2020-10-29 03:51:01,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:01,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391246100] [2020-10-29 03:51:01,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:01,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:01,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:04,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:04,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 03:51:04,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:51:04,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2271 [2020-10-29 03:51:04,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:04,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:51:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:51:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 03:51:04,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:04,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:04,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:04,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:04,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:04,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:04,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:04,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:04,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:04,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:04,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:04,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:04,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:04,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:51:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:04,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:04,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:04,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:04,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:04,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:51:04,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:04,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:04,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:04,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:51:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:04,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:04,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:04,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:04,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:04,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:04,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:04,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:04,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:04,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:04,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:04,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:04,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:51:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:04,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:04,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:04,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:04,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:04,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:51:04,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:04,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:04,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:04,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:04,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:04,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:04,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:51:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:04,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:04,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:04,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:04,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:04,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:51:04,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:04,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:04,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:04,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:04,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:04,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:04,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:51:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:04,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:04,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:04,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:04,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:04,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:04,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:04,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:04,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:04,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:04,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:04,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:04,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 03:51:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:04,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:04,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:04,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:04,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:04,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:04,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:04,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:04,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:51:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:04,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:04,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:04,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:04,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:04,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:04,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:04,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:04,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:04,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:04,163 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-29 03:51:04,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391246100] [2020-10-29 03:51:04,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:04,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:51:04,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448572581] [2020-10-29 03:51:04,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:51:04,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:04,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:51:04,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:51:04,165 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 11 states. [2020-10-29 03:51:04,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:04,424 INFO L93 Difference]: Finished difference Result 158 states and 164 transitions. [2020-10-29 03:51:04,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:51:04,425 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-10-29 03:51:04,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:04,426 INFO L225 Difference]: With dead ends: 158 [2020-10-29 03:51:04,427 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 03:51:04,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:51:04,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 03:51:04,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2020-10-29 03:51:04,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 03:51:04,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2020-10-29 03:51:04,444 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 80 [2020-10-29 03:51:04,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:04,445 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2020-10-29 03:51:04,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:51:04,445 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2020-10-29 03:51:04,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 03:51:04,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:04,446 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:04,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:51:04,446 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:04,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:04,446 INFO L82 PathProgramCache]: Analyzing trace with hash -600361486, now seen corresponding path program 30 times [2020-10-29 03:51:04,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:04,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260291395] [2020-10-29 03:51:04,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:04,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:04,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:09,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:09,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 03:51:09,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:51:09,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:51:09,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:09,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:09,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:51:09,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:51:09,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 03:51:09,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:10,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:10,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:10,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:10,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:10,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:10,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:10,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:10,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:10,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:10,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:10,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:10,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:10,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:51:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:10,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:10,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:10,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:10,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:10,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:10,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:10,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:10,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 03:51:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:10,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:10,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:10,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:10,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:10,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:10,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:10,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:10,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:10,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:51:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:10,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:10,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:10,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:10,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:10,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:10,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:10,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:10,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:10,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:10,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:10,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:10,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:51:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:10,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:10,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:10,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:10,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:10,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:10,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:10,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:10,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:10,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:51:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:10,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:10,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:10,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:10,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:10,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:10,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:10,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:10,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:10,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:10,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:10,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:10,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:51:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:10,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:10,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:10,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:10,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:10,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:10,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:10,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:10,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:10,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:10,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:10,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:10,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 03:51:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:10,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:10,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:10,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:10,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:10,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:10,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:10,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:10,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:10,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:10,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:10,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 14 proven. 113 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-29 03:51:10,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260291395] [2020-10-29 03:51:10,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:10,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:51:10,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130921049] [2020-10-29 03:51:10,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:51:10,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:10,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:51:10,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:51:10,162 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 24 states. [2020-10-29 03:51:11,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:11,575 INFO L93 Difference]: Finished difference Result 122 states and 133 transitions. [2020-10-29 03:51:11,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:51:11,576 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 82 [2020-10-29 03:51:11,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:11,577 INFO L225 Difference]: With dead ends: 122 [2020-10-29 03:51:11,577 INFO L226 Difference]: Without dead ends: 118 [2020-10-29 03:51:11,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=96, Invalid=1094, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:51:11,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-29 03:51:11,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2020-10-29 03:51:11,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-29 03:51:11,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2020-10-29 03:51:11,607 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 82 [2020-10-29 03:51:11,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:11,607 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2020-10-29 03:51:11,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:51:11,607 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2020-10-29 03:51:11,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 03:51:11,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:11,609 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:11,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:51:11,609 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:11,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:11,609 INFO L82 PathProgramCache]: Analyzing trace with hash -460606847, now seen corresponding path program 31 times [2020-10-29 03:51:11,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:11,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607382865] [2020-10-29 03:51:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:11,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:11,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:13,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:16,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:16,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 03:51:16,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:51:16,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:51:16,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:16,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:51:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:51:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 03:51:16,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:17,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:17,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:17,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:17,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:17,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:17,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:17,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:17,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:17,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:17,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:51:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:17,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:17,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:17,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:17,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:17,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:17,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:17,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:17,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:17,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:17,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:17,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:51:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:17,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:17,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:17,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:17,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:17,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:17,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:17,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:17,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:17,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:17,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:17,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:51:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:17,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:17,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:17,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:17,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:17,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:17,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:17,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:17,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:17,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:17,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:17,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:17,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:51:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:17,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:17,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:17,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:17,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:17,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:17,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:17,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:51:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:17,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:17,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:17,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:17,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:17,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:17,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:17,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:17,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:17,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:17,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:17,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:17,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:51:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:17,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:17,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:17,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:17,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:17,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:17,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:17,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:17,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:17,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:17,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:17,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:17,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 03:51:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:17,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:17,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:17,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:17,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:17,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:17,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:17,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:17,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 14 proven. 122 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-29 03:51:17,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607382865] [2020-10-29 03:51:17,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:17,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:51:17,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432057308] [2020-10-29 03:51:17,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:51:17,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:17,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:51:17,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:51:17,475 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand 25 states. [2020-10-29 03:51:19,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:19,224 INFO L93 Difference]: Finished difference Result 154 states and 174 transitions. [2020-10-29 03:51:19,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:51:19,225 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 83 [2020-10-29 03:51:19,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:19,226 INFO L225 Difference]: With dead ends: 154 [2020-10-29 03:51:19,227 INFO L226 Difference]: Without dead ends: 150 [2020-10-29 03:51:19,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=122, Invalid=1210, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:51:19,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-29 03:51:19,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 115. [2020-10-29 03:51:19,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-29 03:51:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2020-10-29 03:51:19,252 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 83 [2020-10-29 03:51:19,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:19,252 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2020-10-29 03:51:19,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:51:19,252 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2020-10-29 03:51:19,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 03:51:19,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:19,254 INFO L422 BasicCegarLoop]: trace histogram [10, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:19,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:51:19,254 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:19,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:19,255 INFO L82 PathProgramCache]: Analyzing trace with hash -423180334, now seen corresponding path program 32 times [2020-10-29 03:51:19,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:19,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433897604] [2020-10-29 03:51:19,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:19,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:19,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:21,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:24,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:24,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 03:51:24,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:51:24,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:51:24,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:24,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:51:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:51:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 03:51:24,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:25,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:25,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:25,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:25,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:25,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:25,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:25,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:25,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:25,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:25,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:25,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:25,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:25,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 03:51:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:25,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:25,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:25,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:25,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:25,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:51:25,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:25,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:25,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:25,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:25,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:25,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:25,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:51:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:25,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:25,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:25,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:25,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:25,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:25,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:25,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:25,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:25,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:25,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:25,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:25,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:51:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:25,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:25,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:25,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:25,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:25,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:25,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:25,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:25,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:25,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:51:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:25,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:25,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:25,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:25,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:25,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:25,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:25,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:25,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:25,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:25,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:25,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:25,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 03:51:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:25,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:25,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:25,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:25,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:25,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:25,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:25,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:25,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:25,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:25,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:25,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:25,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:51:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:25,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:25,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:25,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:25,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:25,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:25,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:25,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:25,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:25,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:25,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:25,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:25,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:51:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:25,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:25,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:25,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:25,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:25,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:25,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:25,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:25,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:25,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:25,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:25,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 14 proven. 132 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-29 03:51:25,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433897604] [2020-10-29 03:51:25,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:25,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:51:25,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678825715] [2020-10-29 03:51:25,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:51:25,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:25,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:51:25,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:51:25,151 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand 26 states. [2020-10-29 03:51:27,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:27,088 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-10-29 03:51:27,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:51:27,088 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 84 [2020-10-29 03:51:27,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:27,089 INFO L225 Difference]: With dead ends: 127 [2020-10-29 03:51:27,089 INFO L226 Difference]: Without dead ends: 123 [2020-10-29 03:51:27,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=123, Invalid=1283, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:51:27,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-29 03:51:27,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 92. [2020-10-29 03:51:27,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-29 03:51:27,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2020-10-29 03:51:27,107 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 84 [2020-10-29 03:51:27,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:27,107 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2020-10-29 03:51:27,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:51:27,107 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2020-10-29 03:51:27,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 03:51:27,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:27,108 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:27,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 03:51:27,108 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:27,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:27,108 INFO L82 PathProgramCache]: Analyzing trace with hash 718318690, now seen corresponding path program 33 times [2020-10-29 03:51:27,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:27,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483818737] [2020-10-29 03:51:27,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:27,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:27,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:30,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:30,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 03:51:30,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:51:30,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3094 [2020-10-29 03:51:30,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:30,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:51:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:51:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:51:30,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:30,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:30,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:30,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:30,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:30,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:30,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:30,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:30,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:30,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:30,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:51:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:30,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:30,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:30,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:30,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:30,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:51:30,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:30,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:30,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:30,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:30,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 03:51:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:30,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:30,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:30,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:30,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:30,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:51:30,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:30,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:30,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:30,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:51:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:30,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:30,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:30,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:30,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:30,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:30,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:30,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:30,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:30,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:30,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:30,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:30,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:51:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:30,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:30,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:30,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:30,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:30,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:30,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:30,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:30,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:30,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:30,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:30,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:30,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:51:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:30,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:30,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:30,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:30,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:30,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:30,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:30,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:30,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:30,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:51:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:30,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:30,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:30,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:30,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:30,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:51:30,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:30,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:30,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:30,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:30,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:30,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:30,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 03:51:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:30,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:30,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:30,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:30,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:30,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:30,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:30,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:30,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:30,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:30,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:30,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:30,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 03:51:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:30,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:30,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:30,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:30,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:30,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:30,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:30,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:30,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2020-10-29 03:51:30,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483818737] [2020-10-29 03:51:30,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:30,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:51:30,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952870455] [2020-10-29 03:51:30,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:51:30,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:30,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:51:30,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:51:30,381 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 12 states. [2020-10-29 03:51:30,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:30,570 INFO L93 Difference]: Finished difference Result 170 states and 174 transitions. [2020-10-29 03:51:30,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:51:30,571 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-10-29 03:51:30,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:30,572 INFO L225 Difference]: With dead ends: 170 [2020-10-29 03:51:30,572 INFO L226 Difference]: Without dead ends: 93 [2020-10-29 03:51:30,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:51:30,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-29 03:51:30,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-29 03:51:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-29 03:51:30,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2020-10-29 03:51:30,588 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 89 [2020-10-29 03:51:30,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:30,588 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2020-10-29 03:51:30,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:51:30,588 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2020-10-29 03:51:30,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 03:51:30,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:30,589 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:30,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 03:51:30,589 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:30,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:30,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1419860244, now seen corresponding path program 34 times [2020-10-29 03:51:30,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:30,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072989450] [2020-10-29 03:51:30,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:30,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:30,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:34,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:34,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 03:51:34,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:51:34,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3565 [2020-10-29 03:51:34,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:34,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:51:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 03:51:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:51:34,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:34,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:34,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:34,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:34,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:34,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:34,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:34,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:34,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:34,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:34,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:51:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:34,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:34,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:34,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:34,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:34,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:34,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:34,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:34,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:34,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:34,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:34,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:34,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:51:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:34,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:34,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:34,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:34,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:34,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:51:34,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:34,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:34,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:34,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:34,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:34,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:34,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:51:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:34,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:34,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:34,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:34,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:34,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:51:34,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:34,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:34,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:34,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:34,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:34,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:34,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:51:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:34,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:34,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:34,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:34,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:34,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:34,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:34,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:34,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:34,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:34,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:34,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:34,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:51:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:34,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:34,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:34,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:34,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:34,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:51:34,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:34,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:34,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:51:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:34,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:34,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:34,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:34,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:34,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:51:34,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:34,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:34,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:34,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:34,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:34,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:34,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 03:51:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:34,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:34,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:34,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:34,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:34,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:51:34,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:34,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:34,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:34,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:34,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:34,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 03:51:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:34,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:34,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:34,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:34,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:51:34,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:34,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:34,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:34,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:51:34,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:34,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2020-10-29 03:51:34,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072989450] [2020-10-29 03:51:34,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:34,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:51:34,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956490634] [2020-10-29 03:51:34,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:51:34,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:34,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:51:34,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:51:34,329 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 12 states. [2020-10-29 03:51:34,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:34,586 INFO L93 Difference]: Finished difference Result 165 states and 169 transitions. [2020-10-29 03:51:34,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:51:34,587 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 90 [2020-10-29 03:51:34,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:34,588 INFO L225 Difference]: With dead ends: 165 [2020-10-29 03:51:34,589 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 03:51:34,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:51:34,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 03:51:34,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2020-10-29 03:51:34,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-29 03:51:34,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2020-10-29 03:51:34,605 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 90 [2020-10-29 03:51:34,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:34,606 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2020-10-29 03:51:34,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:51:34,606 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2020-10-29 03:51:34,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 03:51:34,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:34,607 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:34,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 03:51:34,607 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:34,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:34,607 INFO L82 PathProgramCache]: Analyzing trace with hash 80063105, now seen corresponding path program 35 times [2020-10-29 03:51:34,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:34,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919316100] [2020-10-29 03:51:34,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:34,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:34,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:36,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:39,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:39,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 03:51:39,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:51:39,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:51:39,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:39,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:39,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:51:39,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:51:39,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 03:51:39,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:40,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:40,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:40,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:40,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:40,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:40,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:40,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:40,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:40,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:40,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 03:51:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:40,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:40,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:40,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:40,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:40,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:40,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:40,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:40,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:40,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:40,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:40,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:40,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:51:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:40,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:40,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:40,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:40,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:40,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:40,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:40,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:40,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:40,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:40,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:40,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:40,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:51:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:40,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:40,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:40,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:40,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:40,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:40,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:40,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:40,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:40,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:40,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:40,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:40,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:51:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:40,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:40,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:40,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:40,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:40,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:40,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:40,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:40,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:40,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 03:51:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:40,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:40,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:40,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:40,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:40,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:40,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:40,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:40,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:40,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:40,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:40,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:40,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:51:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:40,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:40,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:40,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:40,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:40,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:40,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:40,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:40,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:40,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:40,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:40,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:40,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:51:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:40,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:40,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:40,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:40,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:40,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:40,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:40,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:40,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:40,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 03:51:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:40,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:40,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:40,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:40,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:40,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:40,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:40,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:40,500 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 16 proven. 145 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-29 03:51:40,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919316100] [2020-10-29 03:51:40,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:40,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:51:40,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175550779] [2020-10-29 03:51:40,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:51:40,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:40,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:51:40,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:51:40,502 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand 26 states. [2020-10-29 03:51:42,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:42,182 INFO L93 Difference]: Finished difference Result 134 states and 146 transitions. [2020-10-29 03:51:42,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:51:42,183 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 91 [2020-10-29 03:51:42,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:42,187 INFO L225 Difference]: With dead ends: 134 [2020-10-29 03:51:42,187 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 03:51:42,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=104, Invalid=1302, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:51:42,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 03:51:42,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2020-10-29 03:51:42,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-29 03:51:42,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 137 transitions. [2020-10-29 03:51:42,222 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 137 transitions. Word has length 91 [2020-10-29 03:51:42,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:42,223 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 137 transitions. [2020-10-29 03:51:42,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:51:42,223 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 137 transitions. [2020-10-29 03:51:42,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 03:51:42,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:42,224 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:42,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 03:51:42,224 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:42,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:42,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1496024756, now seen corresponding path program 36 times [2020-10-29 03:51:42,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:42,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135453749] [2020-10-29 03:51:42,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:42,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:42,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:45,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:47,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:47,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 03:51:47,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:51:47,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:51:47,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:47,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:47,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:51:47,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:51:47,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 03:51:47,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:48,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:48,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:48,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:48,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:48,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:48,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:48,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:48,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:48,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:48,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:48,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:48,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:48,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:51:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:48,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:48,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:48,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:48,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:48,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:48,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:48,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:48,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:48,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 03:51:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:48,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:48,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:48,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:48,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:48,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:48,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:48,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:48,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:48,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:48,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:48,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:48,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:51:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:48,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:48,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:48,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:48,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:48,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:48,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:48,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:48,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:48,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:51:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:48,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:48,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:48,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:48,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:48,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:48,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:48,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:48,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:48,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:48,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:48,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:48,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:51:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:48,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:48,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:48,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:48,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:48,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:48,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:48,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:48,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:48,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 03:51:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:48,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:48,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:48,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:48,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:48,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:48,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:48,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:48,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:48,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:48,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:48,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:48,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 03:51:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:48,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:48,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:48,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:48,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:48,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:48,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:48,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:48,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:48,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:51:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:48,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:48,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:48,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:48,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:48,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:48,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:48,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:48,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:48,244 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 16 proven. 155 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-29 03:51:48,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135453749] [2020-10-29 03:51:48,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:48,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:51:48,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82667518] [2020-10-29 03:51:48,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:51:48,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:48,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:51:48,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:51:48,246 INFO L87 Difference]: Start difference. First operand 126 states and 137 transitions. Second operand 27 states. [2020-10-29 03:51:50,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:50,380 INFO L93 Difference]: Finished difference Result 169 states and 191 transitions. [2020-10-29 03:51:50,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:51:50,381 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 92 [2020-10-29 03:51:50,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:50,383 INFO L225 Difference]: With dead ends: 169 [2020-10-29 03:51:50,383 INFO L226 Difference]: Without dead ends: 165 [2020-10-29 03:51:50,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=129, Invalid=1431, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:51:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-29 03:51:50,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 127. [2020-10-29 03:51:50,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-29 03:51:50,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 139 transitions. [2020-10-29 03:51:50,413 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 139 transitions. Word has length 92 [2020-10-29 03:51:50,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:50,413 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 139 transitions. [2020-10-29 03:51:50,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:51:50,414 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 139 transitions. [2020-10-29 03:51:50,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 03:51:50,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:50,415 INFO L422 BasicCegarLoop]: trace histogram [11, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:50,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 03:51:50,415 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:50,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:50,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1853804319, now seen corresponding path program 37 times [2020-10-29 03:51:50,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:50,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734259257] [2020-10-29 03:51:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:50,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:50,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:53,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:55,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:55,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 03:51:55,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:51:55,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:51:55,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:55,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:55,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:51:55,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:51:55,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 03:51:55,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:56,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:56,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:56,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:56,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:56,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:56,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:56,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:56,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:56,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:51:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:56,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:56,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:56,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:56,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:56,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:56,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:56,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:56,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:56,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:56,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:56,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:51:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:56,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:56,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:56,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:56,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:56,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:56,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:56,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:56,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:56,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:56,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:56,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:56,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 03:51:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:56,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:56,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:56,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:56,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:56,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:56,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:56,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:56,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:56,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:51:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:56,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:56,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:56,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:56,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:56,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:56,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:56,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:56,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:56,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:56,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:56,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 03:51:56,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:51:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:56,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:56,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:56,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:56,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:56,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:56,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:56,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:56,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:56,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 03:51:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:56,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:56,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:56,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:56,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:56,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:56,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:56,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:56,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:56,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:56,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:56,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:56,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 03:51:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:56,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:56,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:56,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:56,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:56,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:56,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:56,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:56,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:56,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:56,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 03:51:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:56,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:56,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:56,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:56,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:56,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:56,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:56,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:56,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:56,590 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 16 proven. 166 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-29 03:51:56,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734259257] [2020-10-29 03:51:56,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:56,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:51:56,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135142990] [2020-10-29 03:51:56,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:51:56,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:56,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:51:56,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=699, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:51:56,593 INFO L87 Difference]: Start difference. First operand 127 states and 139 transitions. Second operand 28 states. [2020-10-29 03:51:58,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:58,828 INFO L93 Difference]: Finished difference Result 139 states and 151 transitions. [2020-10-29 03:51:58,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:51:58,829 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 93 [2020-10-29 03:51:58,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:58,834 INFO L225 Difference]: With dead ends: 139 [2020-10-29 03:51:58,834 INFO L226 Difference]: Without dead ends: 135 [2020-10-29 03:51:58,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=133, Invalid=1507, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:51:58,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-29 03:51:58,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 101. [2020-10-29 03:51:58,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 03:51:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2020-10-29 03:51:58,859 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 93 [2020-10-29 03:51:58,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:58,860 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2020-10-29 03:51:58,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:51:58,860 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2020-10-29 03:51:58,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 03:51:58,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:58,861 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:58,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 03:51:58,861 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:58,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:58,861 INFO L82 PathProgramCache]: Analyzing trace with hash -174077709, now seen corresponding path program 38 times [2020-10-29 03:51:58,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:58,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962178148] [2020-10-29 03:51:58,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:58,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:58,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:03,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:03,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 03:52:03,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:52:03,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4349 [2020-10-29 03:52:03,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:03,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:52:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 03:52:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 03:52:03,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:03,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:03,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:03,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:03,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:03,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:03,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:03,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:03,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:03,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:03,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:03,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:03,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:03,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 03:52:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:03,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:03,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:03,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:03,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:03,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:03,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:03,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:03,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:03,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:03,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:03,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:03,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:52:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:03,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:03,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:03,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:03,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:03,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:03,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:03,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:03,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:03,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:03,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:03,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:03,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:52:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:03,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:03,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:03,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:03,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:03,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:03,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:03,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:03,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:03,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:52:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:03,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:03,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:03,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:03,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:03,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:03,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:03,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:03,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:03,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 03:52:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:03,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:03,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:03,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:03,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:03,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:03,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:03,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:03,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:03,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:52:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:03,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:03,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:03,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:03,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:03,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:03,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:03,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:03,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:03,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:03,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:03,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:03,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:52:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:03,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:03,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:03,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:03,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:03,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:03,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:03,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:03,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:03,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:03,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:03,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:03,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 03:52:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:03,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:03,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:03,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:03,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:03,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:03,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:03,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:03,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:03,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:03,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:03,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:03,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 03:52:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:03,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:03,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:03,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:03,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:03,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:03,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:03,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:03,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:03,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:03,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:03,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 18 proven. 45 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-29 03:52:03,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962178148] [2020-10-29 03:52:03,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:03,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:52:03,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139072593] [2020-10-29 03:52:03,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:52:03,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:03,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:52:03,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:52:03,433 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 13 states. [2020-10-29 03:52:03,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:03,753 INFO L93 Difference]: Finished difference Result 192 states and 198 transitions. [2020-10-29 03:52:03,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:52:03,754 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 98 [2020-10-29 03:52:03,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:03,755 INFO L225 Difference]: With dead ends: 192 [2020-10-29 03:52:03,756 INFO L226 Difference]: Without dead ends: 107 [2020-10-29 03:52:03,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:52:03,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-29 03:52:03,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2020-10-29 03:52:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 03:52:03,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2020-10-29 03:52:03,785 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 98 [2020-10-29 03:52:03,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:03,786 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2020-10-29 03:52:03,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:52:03,786 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2020-10-29 03:52:03,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 03:52:03,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:03,787 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:03,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 03:52:03,787 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:03,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:03,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1593070482, now seen corresponding path program 39 times [2020-10-29 03:52:03,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:03,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249616430] [2020-10-29 03:52:03,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:03,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:03,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:07,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:08,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:08,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 03:52:08,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:52:08,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:52:08,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:08,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:52:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:52:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 03:52:08,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:09,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:09,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:09,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:09,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:09,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:09,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:52:09,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:09,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:09,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:09,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:09,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:09,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:52:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:09,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:09,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:09,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:09,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:09,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:09,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:09,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:09,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:09,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:52:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:09,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:09,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:09,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:09,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:09,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:09,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:09,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:09,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:09,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:09,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:09,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:09,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 03:52:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:09,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:09,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:09,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:09,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:09,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:09,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:09,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:09,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:09,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:09,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:09,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:09,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:52:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:09,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:09,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:09,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:09,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:09,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:09,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:09,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:09,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:09,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:52:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:09,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:09,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:09,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:09,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:09,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:09,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:09,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:09,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:09,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 03:52:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:09,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:09,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:09,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:09,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:09,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:09,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:09,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:09,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:09,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 03:52:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:09,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:09,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:09,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:09,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:09,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:09,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:09,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 03:52:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:09,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:09,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:09,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:09,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:09,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:52:09,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:09,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:09,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:09,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:09,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:09,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:09,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:52:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:09,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:09,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:09,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:09,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:09,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:52:09,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:09,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:09,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:09,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:09,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:09,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:09,925 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 18 proven. 181 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-29 03:52:09,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249616430] [2020-10-29 03:52:09,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:09,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:52:09,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658855960] [2020-10-29 03:52:09,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:52:09,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:09,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:52:09,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=700, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:52:09,927 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 28 states. [2020-10-29 03:52:12,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:12,295 INFO L93 Difference]: Finished difference Result 146 states and 159 transitions. [2020-10-29 03:52:12,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:52:12,295 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 100 [2020-10-29 03:52:12,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:12,297 INFO L225 Difference]: With dead ends: 146 [2020-10-29 03:52:12,297 INFO L226 Difference]: Without dead ends: 142 [2020-10-29 03:52:12,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:52:12,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-29 03:52:12,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2020-10-29 03:52:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-29 03:52:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 150 transitions. [2020-10-29 03:52:12,335 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 150 transitions. Word has length 100 [2020-10-29 03:52:12,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:12,335 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 150 transitions. [2020-10-29 03:52:12,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:52:12,335 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 150 transitions. [2020-10-29 03:52:12,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 03:52:12,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:12,337 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:12,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 03:52:12,337 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:12,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:12,337 INFO L82 PathProgramCache]: Analyzing trace with hash -884791647, now seen corresponding path program 40 times [2020-10-29 03:52:12,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:12,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703165280] [2020-10-29 03:52:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:12,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:12,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:15,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:17,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:17,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 03:52:17,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:52:17,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:52:17,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:17,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:17,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:52:17,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:52:17,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 03:52:17,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:18,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:18,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:18,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:18,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:18,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:18,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:18,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:18,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:18,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:18,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:52:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:18,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:18,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:18,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:18,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:18,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:18,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:18,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:52:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:18,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:18,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:18,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:18,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:52:18,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:18,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:18,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:18,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:52:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:18,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:18,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:18,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:18,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:18,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:52:18,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:18,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:18,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:18,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:52:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:18,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:18,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:18,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:18,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:18,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:18,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:18,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:18,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:18,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 03:52:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:18,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:18,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:18,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:18,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:18,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:18,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:18,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:18,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:52:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:18,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:18,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:18,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:18,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:18,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:18,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:18,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:18,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:18,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 03:52:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:18,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:18,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:18,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:18,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:18,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:52:18,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:18,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:18,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:18,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:18,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 03:52:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:18,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:18,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:18,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:18,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:18,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:52:18,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:18,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:18,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:18,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-29 03:52:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:18,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:18,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:18,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:18,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:18,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:18,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:18,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:18,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:18,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:18,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:18,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 18 proven. 192 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-29 03:52:18,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703165280] [2020-10-29 03:52:18,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:18,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:52:18,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885646940] [2020-10-29 03:52:18,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:52:18,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:18,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:52:18,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=755, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:52:18,469 INFO L87 Difference]: Start difference. First operand 138 states and 150 transitions. Second operand 29 states. [2020-10-29 03:52:21,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:21,031 INFO L93 Difference]: Finished difference Result 184 states and 208 transitions. [2020-10-29 03:52:21,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:52:21,032 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 101 [2020-10-29 03:52:21,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:21,033 INFO L225 Difference]: With dead ends: 184 [2020-10-29 03:52:21,033 INFO L226 Difference]: Without dead ends: 180 [2020-10-29 03:52:21,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=139, Invalid=1667, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:52:21,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-29 03:52:21,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 139. [2020-10-29 03:52:21,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-29 03:52:21,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2020-10-29 03:52:21,073 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 101 [2020-10-29 03:52:21,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:21,074 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2020-10-29 03:52:21,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:52:21,074 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2020-10-29 03:52:21,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 03:52:21,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:21,075 INFO L422 BasicCegarLoop]: trace histogram [12, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:21,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-29 03:52:21,075 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:21,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:21,076 INFO L82 PathProgramCache]: Analyzing trace with hash -389106318, now seen corresponding path program 41 times [2020-10-29 03:52:21,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:21,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411760322] [2020-10-29 03:52:21,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:21,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:21,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:25,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:26,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:26,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 03:52:26,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:52:26,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:52:26,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:26,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:26,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:52:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:52:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 03:52:26,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:27,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:27,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:27,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:27,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:27,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:27,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:27,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:27,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:27,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:27,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:52:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:27,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:27,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:27,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:27,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:27,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:27,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:27,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:27,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:27,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:27,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:27,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:27,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:52:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:27,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:27,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:27,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:27,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:27,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:27,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:27,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:27,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:27,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:27,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:52:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:27,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:27,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:27,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:27,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:27,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:27,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:27,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:27,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:27,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:27,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:27,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:27,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:52:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:27,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:27,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:27,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:27,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:27,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:27,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:27,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:27,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:27,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:27,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:27,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:27,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 03:52:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:27,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:27,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:27,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:27,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:27,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:27,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:27,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:27,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:27,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 03:52:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:27,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:27,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:27,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:27,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:27,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:27,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:27,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:27,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:27,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:27,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:27,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:27,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:52:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:27,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:27,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:27,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:27,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:27,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:27,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:27,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:27,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:27,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:27,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:27,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:27,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 03:52:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:27,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:27,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:27,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:27,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:27,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:27,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:27,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:27,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:27,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:27,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:27,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:27,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 03:52:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:27,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:27,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:27,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:27,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:27,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:27,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:27,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:52:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:52:27,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:27,275 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 18 proven. 204 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-29 03:52:27,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411760322] [2020-10-29 03:52:27,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:27,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:52:27,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922579900] [2020-10-29 03:52:27,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:52:27,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:27,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:52:27,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=806, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:52:27,276 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand 30 states. [2020-10-29 03:52:29,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:29,805 INFO L93 Difference]: Finished difference Result 151 states and 164 transitions. [2020-10-29 03:52:29,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:52:29,811 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 102 [2020-10-29 03:52:29,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:29,812 INFO L225 Difference]: With dead ends: 151 [2020-10-29 03:52:29,813 INFO L226 Difference]: Without dead ends: 147 [2020-10-29 03:52:29,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=146, Invalid=1746, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:52:29,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-29 03:52:29,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 110. [2020-10-29 03:52:29,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-29 03:52:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2020-10-29 03:52:29,841 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 102 [2020-10-29 03:52:29,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:29,842 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2020-10-29 03:52:29,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:52:29,842 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2020-10-29 03:52:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 03:52:29,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:29,843 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:29,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-29 03:52:29,843 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:29,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:29,843 INFO L82 PathProgramCache]: Analyzing trace with hash -129697086, now seen corresponding path program 42 times [2020-10-29 03:52:29,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:29,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186900704] [2020-10-29 03:52:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:29,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:29,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:34,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:34,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 03:52:34,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:52:34,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 03:52:34,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:34,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:52:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:52:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:52:34,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:35,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:35,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:35,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:35,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:35,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:35,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:52:35,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:35,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:35,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:35,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:35,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:35,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:35,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:52:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:35,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:35,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:35,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:35,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:35,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:35,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:35,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:35,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:35,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:35,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:35,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:35,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:52:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:35,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:35,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:35,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:35,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:35,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:35,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:35,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:35,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:35,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 03:52:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:35,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:35,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:35,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:35,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:35,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:35,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:35,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:35,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:52:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:35,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:35,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:35,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:35,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:35,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:35,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:35,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:35,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:35,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:52:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:35,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:35,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:35,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:35,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:35,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:52:35,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:35,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:35,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:35,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:35,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:35,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:52:35,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 03:52:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:35,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:35,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:35,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:35,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:35,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:35,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:35,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:35,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:52:35,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 03:52:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:35,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:35,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:35,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:35,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:35,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:35,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:35,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:35,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:35,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:52:35,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 03:52:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:35,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:35,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:35,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:35,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:35,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:35,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:35,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:35,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:35,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:35,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:35,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:52:35,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:52:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:35,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:35,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:35,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:35,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:35,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:52:35,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:35,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:35,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:35,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:35,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:35,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:52:35,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 03:52:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:35,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:35,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:35,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:35,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:35,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:35,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:35,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:35,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 20 proven. 55 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-10-29 03:52:35,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186900704] [2020-10-29 03:52:35,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:35,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:52:35,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248723352] [2020-10-29 03:52:35,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:52:35,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:35,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:52:35,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:52:35,166 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 14 states. [2020-10-29 03:52:35,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:35,606 INFO L93 Difference]: Finished difference Result 209 states and 215 transitions. [2020-10-29 03:52:35,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:52:35,607 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 107 [2020-10-29 03:52:35,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:35,608 INFO L225 Difference]: With dead ends: 209 [2020-10-29 03:52:35,608 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 03:52:35,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:52:35,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 03:52:35,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2020-10-29 03:52:35,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-29 03:52:35,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2020-10-29 03:52:35,636 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 107 [2020-10-29 03:52:35,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:35,637 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2020-10-29 03:52:35,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:52:35,637 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2020-10-29 03:52:35,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 03:52:35,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:35,638 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:35,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-29 03:52:35,638 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:35,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:35,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1792849183, now seen corresponding path program 43 times [2020-10-29 03:52:35,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:35,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618177922] [2020-10-29 03:52:35,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:35,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:35,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:40,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:40,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 03:52:40,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:52:40,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 03:52:40,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:40,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:52:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:52:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:52:40,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:40,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:40,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:40,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:40,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:40,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:40,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:40,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:40,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:40,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:40,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:40,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:40,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:40,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:52:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:40,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:40,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:40,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:40,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:40,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:40,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:40,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:40,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:40,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:40,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:40,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:40,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:52:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:40,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:40,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:40,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:40,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:40,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:40,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:40,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:40,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:40,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:40,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:40,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:40,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:52:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:40,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:40,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:40,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:40,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:40,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:40,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:40,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:40,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:40,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:52:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:40,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:40,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:40,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:40,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:40,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:40,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:40,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:40,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:40,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:40,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:40,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:40,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 03:52:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:40,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:40,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:40,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:40,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:40,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:40,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:40,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:40,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:40,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:40,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:40,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:40,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 03:52:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:40,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:40,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:40,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:40,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:40,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:40,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:40,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:40,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:40,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:40,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:52:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:40,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:40,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:40,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:40,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:40,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:40,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:40,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:40,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:40,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 03:52:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:40,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:40,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:40,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:40,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:40,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:40,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:40,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:40,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 03:52:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:40,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:40,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:40,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:40,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:40,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:40,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:40,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:40,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:40,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:40,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:40,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:40,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-29 03:52:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:40,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:40,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:40,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:40,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:40,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:40,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:40,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:40,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:40,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:40,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:40,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2020-10-29 03:52:40,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618177922] [2020-10-29 03:52:40,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:40,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:52:40,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830757188] [2020-10-29 03:52:40,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:52:40,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:40,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:52:40,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:52:40,907 INFO L87 Difference]: Start difference. First operand 112 states and 114 transitions. Second operand 15 states. [2020-10-29 03:52:41,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:41,142 INFO L93 Difference]: Finished difference Result 207 states and 211 transitions. [2020-10-29 03:52:41,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:52:41,143 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 109 [2020-10-29 03:52:41,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:41,144 INFO L225 Difference]: With dead ends: 207 [2020-10-29 03:52:41,144 INFO L226 Difference]: Without dead ends: 113 [2020-10-29 03:52:41,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:52:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-29 03:52:41,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-29 03:52:41,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-29 03:52:41,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2020-10-29 03:52:41,170 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 109 [2020-10-29 03:52:41,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:41,170 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2020-10-29 03:52:41,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:52:41,170 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2020-10-29 03:52:41,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 03:52:41,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:41,171 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:41,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-29 03:52:41,171 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:41,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:41,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1044425363, now seen corresponding path program 44 times [2020-10-29 03:52:41,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:41,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597731948] [2020-10-29 03:52:41,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:41,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:41,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:46,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:46,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 03:52:46,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:52:46,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:52:46,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:46,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:52:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 03:52:46,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:52:46,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:46,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:46,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:46,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:46,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:46,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:46,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:46,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:46,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:46,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:46,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 03:52:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:46,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:46,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:46,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:46,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:46,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:46,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:46,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:46,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:46,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:46,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:46,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:46,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:52:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:46,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:46,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:46,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:46,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:46,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:46,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:46,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:46,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:46,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:46,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:46,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:52:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:46,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:46,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:46,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:46,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:46,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:46,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:46,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:46,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:46,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:46,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:46,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:46,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:52:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:46,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:46,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:46,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:46,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:46,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:46,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:46,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:46,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:46,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:46,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:46,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:46,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:52:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:46,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:46,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:46,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:46,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:46,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:46,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:46,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:46,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:46,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:46,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:46,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:46,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 03:52:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:46,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:46,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:46,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:46,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:46,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:46,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:46,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:46,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:46,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:46,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:46,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:46,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 03:52:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:46,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:46,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:46,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:46,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:46,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:46,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:46,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:46,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:46,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:46,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:46,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:46,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 03:52:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:46,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:46,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:46,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:46,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:46,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:46,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:46,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:46,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:46,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 03:52:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:46,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:46,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:46,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:46,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:46,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:46,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:46,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:46,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:46,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 03:52:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:46,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:46,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:46,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:46,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:46,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:46,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:46,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:46,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:46,441 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2020-10-29 03:52:46,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597731948] [2020-10-29 03:52:46,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:46,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:52:46,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944784500] [2020-10-29 03:52:46,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:52:46,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:46,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:52:46,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:52:46,442 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 15 states. [2020-10-29 03:52:46,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:46,852 INFO L93 Difference]: Finished difference Result 202 states and 207 transitions. [2020-10-29 03:52:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:52:46,853 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 110 [2020-10-29 03:52:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:46,855 INFO L225 Difference]: With dead ends: 202 [2020-10-29 03:52:46,855 INFO L226 Difference]: Without dead ends: 121 [2020-10-29 03:52:46,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:52:46,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-29 03:52:46,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 114. [2020-10-29 03:52:46,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-29 03:52:46,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2020-10-29 03:52:46,880 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 110 [2020-10-29 03:52:46,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:46,880 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2020-10-29 03:52:46,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:52:46,880 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2020-10-29 03:52:46,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 03:52:46,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:46,881 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:46,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-29 03:52:46,882 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:46,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:46,882 INFO L82 PathProgramCache]: Analyzing trace with hash -539053278, now seen corresponding path program 45 times [2020-10-29 03:52:46,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:46,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433079399] [2020-10-29 03:52:46,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:46,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:46,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:51,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:51,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 03:52:51,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:52:51,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:52:51,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:51,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:51,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:52:51,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 03:52:51,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:52:51,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:52,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:52,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:52,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:52,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:52,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:52,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:52,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:52,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:52,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:52,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:52,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:52,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:52,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:52:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:52,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:52,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:52,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:52,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:52,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:52,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:52,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:52,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:52,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:52,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:52,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:52,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:52:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:52,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:52,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:52,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:52,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:52,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:52,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:52,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:52,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:52,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:52,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:52:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:52,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:52,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:52,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:52,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:52,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:52,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:52,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:52,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:52,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:52,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:52,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:52,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:52:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:52,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:52,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:52,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:52,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:52,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:52,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:52,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:52,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:52,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:52,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:52,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:52,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:52:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:52,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:52,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:52,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:52,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:52,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:52,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:52,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:52,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:52,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 03:52:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:52,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:52,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:52,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:52,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:52,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:52,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:52,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:52,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:52,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:52,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:52,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:52,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 03:52:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:52,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:52,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:52,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:52,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:52,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:52,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:52,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:52,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:52,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:52,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:52,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:52,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 03:52:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:52,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:52,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:52,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:52,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:52,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:52,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:52,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:52,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:52,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 03:52:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:52,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:52,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:52,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:52,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:52,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:52,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:52,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:52,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:52,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:52,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:52,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:52,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 03:52:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:52,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:52,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:52,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:52,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:52,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:52,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:52,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:52,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2020-10-29 03:52:52,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433079399] [2020-10-29 03:52:52,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:52,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:52:52,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825037325] [2020-10-29 03:52:52,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:52:52,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:52,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:52:52,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:52:52,177 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand 16 states. [2020-10-29 03:52:52,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:52,614 INFO L93 Difference]: Finished difference Result 221 states and 229 transitions. [2020-10-29 03:52:52,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:52:52,615 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 111 [2020-10-29 03:52:52,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:52,617 INFO L225 Difference]: With dead ends: 221 [2020-10-29 03:52:52,617 INFO L226 Difference]: Without dead ends: 126 [2020-10-29 03:52:52,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:52:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-29 03:52:52,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 116. [2020-10-29 03:52:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-29 03:52:52,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2020-10-29 03:52:52,656 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 111 [2020-10-29 03:52:52,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:52,656 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2020-10-29 03:52:52,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:52:52,657 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2020-10-29 03:52:52,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 03:52:52,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:52,658 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:52,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-29 03:52:52,659 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:52,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:52,659 INFO L82 PathProgramCache]: Analyzing trace with hash -2092636287, now seen corresponding path program 46 times [2020-10-29 03:52:52,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:52,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707587542] [2020-10-29 03:52:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:52,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:52,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:57,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:57,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 03:52:57,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:52:57,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 03:52:57,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:57,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:52:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:52:57,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 03:52:57,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:57,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:57,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:57,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:57,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:57,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:57,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:57,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:57,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:57,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:57,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 03:52:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:57,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:57,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:57,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:57,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:57,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:57,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:57,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:57,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:57,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:57,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:52:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:57,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:57,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:57,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:57,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:57,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:57,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:57,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:57,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:57,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:52:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:57,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:57,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:57,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:57,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:57,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:57,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:57,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:57,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:57,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:57,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:57,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:57,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:52:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:57,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:57,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:57,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:57,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:57,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:57,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:57,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:57,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:57,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:57,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:57,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:57,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 03:52:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:57,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:57,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:57,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:57,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:57,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:57,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:57,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:57,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:57,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 03:52:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:57,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:57,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:57,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:57,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:57,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:57,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:57,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:57,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:57,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:57,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:52:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:57,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:57,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:57,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:57,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:57,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:57,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:57,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:57,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:57,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:57,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 03:52:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:57,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:57,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:57,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:57,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:57,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:57,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:57,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:57,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:57,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:57,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:57,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:57,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 03:52:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:57,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:57,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:57,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:57,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:57,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:57,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:57,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:57,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:57,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:57,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:57,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:57,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-29 03:52:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:57,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:57,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:57,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:57,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:57,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:57,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:57,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:57,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:57,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:52:57,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:57,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:57,975 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 20 proven. 91 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2020-10-29 03:52:57,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707587542] [2020-10-29 03:52:57,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:57,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:52:57,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334485595] [2020-10-29 03:52:57,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:52:57,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:57,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:52:57,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:52:57,977 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand 17 states. [2020-10-29 03:52:58,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:58,395 INFO L93 Difference]: Finished difference Result 227 states and 236 transitions. [2020-10-29 03:52:58,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:52:58,396 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 113 [2020-10-29 03:52:58,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:58,397 INFO L225 Difference]: With dead ends: 227 [2020-10-29 03:52:58,397 INFO L226 Difference]: Without dead ends: 131 [2020-10-29 03:52:58,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:52:58,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-29 03:52:58,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 118. [2020-10-29 03:52:58,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-29 03:52:58,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2020-10-29 03:52:58,448 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 113 [2020-10-29 03:52:58,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:58,448 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2020-10-29 03:52:58,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:52:58,448 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2020-10-29 03:52:58,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 03:52:58,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:58,450 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:58,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-29 03:52:58,450 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:58,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:58,450 INFO L82 PathProgramCache]: Analyzing trace with hash 143045506, now seen corresponding path program 47 times [2020-10-29 03:52:58,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:58,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308551620] [2020-10-29 03:52:58,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:58,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:58,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking...