/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/sorting_bubblesort_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:30:35,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:30:35,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:30:35,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:30:35,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:30:35,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:30:35,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:30:35,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:30:35,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:30:35,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:30:35,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:30:35,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:30:35,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:30:35,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:30:35,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:30:35,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:30:35,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:30:35,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:30:35,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:30:35,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:30:35,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:30:35,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:30:35,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:30:35,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:30:35,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:30:35,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:30:35,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:30:35,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:30:35,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:30:35,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:30:35,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:30:35,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:30:35,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:30:35,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:30:35,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:30:35,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:30:35,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:30:35,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:30:35,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:30:35,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:30:35,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:30:35,627 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 03:30:35,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:30:35,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:30:35,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:30:35,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:30:35,691 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:30:35,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:30:35,692 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:30:35,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:30:35,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:30:35,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:30:35,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:30:35,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:30:35,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:30:35,694 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:30:35,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:30:35,694 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:30:35,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:30:35,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:30:35,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:30:35,709 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:30:35,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:30:35,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:30:35,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:30:35,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:30:35,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:30:35,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:30:35,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:30:35,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:30:35,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:30:35,711 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:30:36,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:30:36,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:30:36,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:30:36,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:30:36,195 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:30:36,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sorting_bubblesort_ground-2.i [2020-10-29 03:30:36,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3fad73c4/7d16ee25d0ab440fb7d4b7acda4685f8/FLAG1b2d8a5c4 [2020-10-29 03:30:36,989 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:30:36,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/sorting_bubblesort_ground-2.i [2020-10-29 03:30:36,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3fad73c4/7d16ee25d0ab440fb7d4b7acda4685f8/FLAG1b2d8a5c4 [2020-10-29 03:30:37,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3fad73c4/7d16ee25d0ab440fb7d4b7acda4685f8 [2020-10-29 03:30:37,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:30:37,363 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:30:37,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:30:37,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:30:37,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:30:37,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:30:37" (1/1) ... [2020-10-29 03:30:37,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@450e6c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:37, skipping insertion in model container [2020-10-29 03:30:37,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:30:37" (1/1) ... [2020-10-29 03:30:37,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:30:37,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:30:37,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:30:37,624 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:30:37,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:30:37,672 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:30:37,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:37 WrapperNode [2020-10-29 03:30:37,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:30:37,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:30:37,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:30:37,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:30:37,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:37" (1/1) ... [2020-10-29 03:30:37,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:37" (1/1) ... [2020-10-29 03:30:37,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:37" (1/1) ... [2020-10-29 03:30:37,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:37" (1/1) ... [2020-10-29 03:30:37,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:37" (1/1) ... [2020-10-29 03:30:37,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:37" (1/1) ... [2020-10-29 03:30:37,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:37" (1/1) ... [2020-10-29 03:30:37,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:30:37,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:30:37,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:30:37,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:30:37,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:37" (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 03:30:37,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:30:37,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:30:37,865 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:30:37,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:30:37,865 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:30:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:30:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:30:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:30:37,867 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:30:37,867 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:30:37,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:30:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:30:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:30:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:30:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:30:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:30:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:30:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:30:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:30:37,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:30:38,275 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:30:38,276 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-29 03:30:38,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:30:38 BoogieIcfgContainer [2020-10-29 03:30:38,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:30:38,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:30:38,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:30:38,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:30:38,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:30:37" (1/3) ... [2020-10-29 03:30:38,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1929e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:30:38, skipping insertion in model container [2020-10-29 03:30:38,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:37" (2/3) ... [2020-10-29 03:30:38,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1929e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:30:38, skipping insertion in model container [2020-10-29 03:30:38,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:30:38" (3/3) ... [2020-10-29 03:30:38,287 INFO L111 eAbstractionObserver]: Analyzing ICFG sorting_bubblesort_ground-2.i [2020-10-29 03:30:38,317 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:30:38,323 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:30:38,338 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:30:38,380 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:30:38,380 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:30:38,380 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:30:38,380 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:30:38,381 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:30:38,381 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:30:38,381 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:30:38,381 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:30:38,404 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-29 03:30:38,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 03:30:38,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:38,415 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 03:30:38,416 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:38,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:38,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1497277457, now seen corresponding path program 1 times [2020-10-29 03:30:38,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:38,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998586561] [2020-10-29 03:30:38,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:38,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:38,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:38,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:38,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:30:38,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:38,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 03:30:38,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:38,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:38,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:38,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:30:38,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:38,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:30:38,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:38,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:38,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:38,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:38,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:38,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:30:38,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:38,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:38,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:38,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:38,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:39,009 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 03:30:39,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998586561] [2020-10-29 03:30:39,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:30:39,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 03:30:39,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138304204] [2020-10-29 03:30:39,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 03:30:39,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:39,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 03:30:39,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:30:39,036 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-29 03:30:39,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:39,155 INFO L93 Difference]: Finished difference Result 61 states and 85 transitions. [2020-10-29 03:30:39,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 03:30:39,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-29 03:30:39,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:39,165 INFO L225 Difference]: With dead ends: 61 [2020-10-29 03:30:39,165 INFO L226 Difference]: Without dead ends: 28 [2020-10-29 03:30:39,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:30:39,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-29 03:30:39,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-29 03:30:39,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-29 03:30:39,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-29 03:30:39,215 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2020-10-29 03:30:39,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:39,215 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-29 03:30:39,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 03:30:39,216 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-29 03:30:39,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 03:30:39,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:39,217 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 03:30:39,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:30:39,218 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:39,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:39,219 INFO L82 PathProgramCache]: Analyzing trace with hash 947624462, now seen corresponding path program 1 times [2020-10-29 03:30:39,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:39,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087311404] [2020-10-29 03:30:39,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:39,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:39,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:39,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:39,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:30:39,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:39,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 03:30:39,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:39,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:30:39,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:39,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:30:39,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:39,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:39,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:39,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:39,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:39,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:39,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:30:39,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:39,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:39,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:39,511 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 03:30:39,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087311404] [2020-10-29 03:30:39,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:30:39,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:30:39,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866380717] [2020-10-29 03:30:39,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:30:39,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:39,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:30:39,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:30:39,523 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2020-10-29 03:30:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:39,648 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-10-29 03:30:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:30:39,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-29 03:30:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:39,650 INFO L225 Difference]: With dead ends: 50 [2020-10-29 03:30:39,651 INFO L226 Difference]: Without dead ends: 30 [2020-10-29 03:30:39,652 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 03:30:39,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-29 03:30:39,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-29 03:30:39,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 03:30:39,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-29 03:30:39,661 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 18 [2020-10-29 03:30:39,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:39,662 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-29 03:30:39,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:30:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-29 03:30:39,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 03:30:39,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:39,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:39,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:30:39,664 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:39,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:39,665 INFO L82 PathProgramCache]: Analyzing trace with hash -196258576, now seen corresponding path program 1 times [2020-10-29 03:30:39,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:39,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116778029] [2020-10-29 03:30:39,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:39,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:39,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:40,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:40,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:30:40,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:40,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-10-29 03:30:40,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:40,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:30:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:30:40,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:40,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:40,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:40,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:40,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:40,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:40,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:30:40,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:40,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:40,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:40,161 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 03:30:40,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116778029] [2020-10-29 03:30:40,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:40,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:30:40,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594522181] [2020-10-29 03:30:40,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:30:40,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:40,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:30:40,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:30:40,164 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 5 states. [2020-10-29 03:30:40,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:40,261 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-29 03:30:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:30:40,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-29 03:30:40,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:40,263 INFO L225 Difference]: With dead ends: 52 [2020-10-29 03:30:40,263 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 03:30:40,264 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 03:30:40,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 03:30:40,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-29 03:30:40,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 03:30:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-29 03:30:40,272 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 20 [2020-10-29 03:30:40,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:40,273 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-29 03:30:40,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:30:40,273 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-29 03:30:40,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:30:40,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:40,274 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:40,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:30:40,275 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:40,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:40,275 INFO L82 PathProgramCache]: Analyzing trace with hash 43769682, now seen corresponding path program 2 times [2020-10-29 03:30:40,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:40,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575719185] [2020-10-29 03:30:40,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:40,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:40,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:40,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:30:40,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:40,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-29 03:30:40,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:40,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:30:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:30:40,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:40,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:40,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:40,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:40,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:40,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:40,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:30:40,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:40,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:40,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:40,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575719185] [2020-10-29 03:30:40,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:40,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:30:40,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259429024] [2020-10-29 03:30:40,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:30:40,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:40,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:30:40,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:30:40,725 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 6 states. [2020-10-29 03:30:40,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:40,850 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-29 03:30:40,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:30:40,851 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-29 03:30:40,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:40,852 INFO L225 Difference]: With dead ends: 54 [2020-10-29 03:30:40,852 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 03:30:40,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 03:30:40,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 03:30:40,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-29 03:30:40,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:30:40,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-29 03:30:40,861 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 22 [2020-10-29 03:30:40,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:40,861 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-29 03:30:40,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:30:40,861 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-29 03:30:40,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 03:30:40,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:40,862 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:40,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:30:40,863 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:40,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:40,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1217308364, now seen corresponding path program 3 times [2020-10-29 03:30:40,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:40,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104540548] [2020-10-29 03:30:40,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:40,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:40,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:41,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:41,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:30:41,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:41,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-29 03:30:41,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:41,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:30:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:30:41,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:41,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:41,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:41,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:41,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:41,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:41,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:30:41,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:41,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:41,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:41,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:41,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104540548] [2020-10-29 03:30:41,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:41,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:30:41,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703104690] [2020-10-29 03:30:41,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:30:41,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:41,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:30:41,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:30:41,218 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 7 states. [2020-10-29 03:30:41,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:41,317 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-29 03:30:41,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:30:41,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-29 03:30:41,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:41,319 INFO L225 Difference]: With dead ends: 56 [2020-10-29 03:30:41,319 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 03:30:41,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 03:30:41,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 03:30:41,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-29 03:30:41,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 03:30:41,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-29 03:30:41,327 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 24 [2020-10-29 03:30:41,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:41,327 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-29 03:30:41,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:30:41,328 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-29 03:30:41,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 03:30:41,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:41,329 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:41,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:30:41,329 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:41,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:41,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1932533098, now seen corresponding path program 4 times [2020-10-29 03:30:41,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:41,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302626380] [2020-10-29 03:30:41,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:41,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:41,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:41,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:41,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:30:41,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:41,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-29 03:30:41,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:41,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:30:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:30:41,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:41,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:41,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:41,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:41,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:41,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:41,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:30:41,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:41,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:41,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:41,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:41,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:41,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302626380] [2020-10-29 03:30:41,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:41,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:30:41,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914089070] [2020-10-29 03:30:41,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:30:41,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:41,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:30:41,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:30:41,712 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 8 states. [2020-10-29 03:30:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:41,819 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2020-10-29 03:30:41,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:30:41,820 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-29 03:30:41,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:41,821 INFO L225 Difference]: With dead ends: 58 [2020-10-29 03:30:41,821 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 03:30:41,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 03:30:41,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 03:30:41,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-29 03:30:41,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 03:30:41,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-29 03:30:41,829 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 26 [2020-10-29 03:30:41,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:41,829 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-29 03:30:41,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:30:41,829 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-29 03:30:41,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:30:41,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:41,830 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:41,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:30:41,831 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:41,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:41,831 INFO L82 PathProgramCache]: Analyzing trace with hash -2068735112, now seen corresponding path program 5 times [2020-10-29 03:30:41,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:41,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969957450] [2020-10-29 03:30:41,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:41,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:41,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:42,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:42,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:30:42,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:42,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-10-29 03:30:42,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:42,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:42,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:30:42,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:42,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:30:42,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:42,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:42,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:42,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:42,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:42,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:42,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:42,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:42,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:42,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:42,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:42,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:42,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:42,399 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:42,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969957450] [2020-10-29 03:30:42,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:42,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:30:42,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900662608] [2020-10-29 03:30:42,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:30:42,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:42,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:30:42,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:30:42,404 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 9 states. [2020-10-29 03:30:42,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:42,534 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-29 03:30:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:30:42,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-29 03:30:42,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:42,535 INFO L225 Difference]: With dead ends: 60 [2020-10-29 03:30:42,536 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 03:30:42,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 03:30:42,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 03:30:42,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-29 03:30:42,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:30:42,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-29 03:30:42,546 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 28 [2020-10-29 03:30:42,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:42,547 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-29 03:30:42,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:30:42,547 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-29 03:30:42,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 03:30:42,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:42,550 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:42,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:30:42,551 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:42,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:42,551 INFO L82 PathProgramCache]: Analyzing trace with hash 185115610, now seen corresponding path program 6 times [2020-10-29 03:30:42,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:42,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281374487] [2020-10-29 03:30:42,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:42,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:42,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:42,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:42,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:30:42,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-29 03:30:42,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:42,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:30:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:30:42,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:43,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:43,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:43,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:43,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:43,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:43,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:43,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:43,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:43,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:43,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:43,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:43,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:43,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281374487] [2020-10-29 03:30:43,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:43,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:30:43,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035206858] [2020-10-29 03:30:43,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:30:43,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:43,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:30:43,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:30:43,060 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 10 states. [2020-10-29 03:30:43,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:43,173 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-10-29 03:30:43,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:30:43,174 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-29 03:30:43,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:43,175 INFO L225 Difference]: With dead ends: 62 [2020-10-29 03:30:43,175 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 03:30:43,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 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 03:30:43,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 03:30:43,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-29 03:30:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 03:30:43,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-29 03:30:43,182 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 30 [2020-10-29 03:30:43,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:43,182 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-29 03:30:43,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:30:43,182 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-29 03:30:43,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:30:43,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:43,183 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:43,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:30:43,184 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:43,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:43,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1472142268, now seen corresponding path program 7 times [2020-10-29 03:30:43,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:43,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975045376] [2020-10-29 03:30:43,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:43,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:43,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:43,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:43,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:30:43,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:43,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-29 03:30:43,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:43,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:43,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:30:43,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:43,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:30:43,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:30:43,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:43,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:43,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:43,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:43,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:43,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:43,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:43,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:43,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:43,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:43,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:43,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:43,889 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:43,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975045376] [2020-10-29 03:30:43,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:43,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:30:43,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952184277] [2020-10-29 03:30:43,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:30:43,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:43,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:30:43,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:30:43,894 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 11 states. [2020-10-29 03:30:44,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:44,085 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-29 03:30:44,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:30:44,086 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-29 03:30:44,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:44,088 INFO L225 Difference]: With dead ends: 64 [2020-10-29 03:30:44,088 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 03:30:44,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:30:44,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 03:30:44,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-29 03:30:44,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 03:30:44,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-10-29 03:30:44,095 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 32 [2020-10-29 03:30:44,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:44,096 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-10-29 03:30:44,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:30:44,096 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-10-29 03:30:44,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:30:44,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:44,097 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:44,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:30:44,097 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:44,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:44,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1354179358, now seen corresponding path program 8 times [2020-10-29 03:30:44,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:44,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073549995] [2020-10-29 03:30:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:44,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:44,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:44,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:44,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:30:44,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:44,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-10-29 03:30:44,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:44,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:44,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:30:44,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:44,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:30:44,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:45,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:45,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:45,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:45,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:45,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:45,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:45,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:45,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:45,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:45,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073549995] [2020-10-29 03:30:45,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:45,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:30:45,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96633111] [2020-10-29 03:30:45,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:30:45,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:45,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:30:45,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:30:45,031 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 12 states. [2020-10-29 03:30:45,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:45,176 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-10-29 03:30:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:30:45,176 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-29 03:30:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:45,177 INFO L225 Difference]: With dead ends: 66 [2020-10-29 03:30:45,178 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 03:30:45,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 03:30:45,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 03:30:45,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-29 03:30:45,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:30:45,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-10-29 03:30:45,184 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 34 [2020-10-29 03:30:45,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:45,185 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-10-29 03:30:45,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:30:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-10-29 03:30:45,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:30:45,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:45,186 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:45,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:30:45,186 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:45,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:45,187 INFO L82 PathProgramCache]: Analyzing trace with hash -339027456, now seen corresponding path program 9 times [2020-10-29 03:30:45,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:45,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304364104] [2020-10-29 03:30:45,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:45,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:45,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:46,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:46,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:30:46,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:46,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 881 [2020-10-29 03:30:46,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:46,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:30:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:30:46,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:46,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:46,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:46,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:46,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:46,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:46,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:46,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:46,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:46,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:46,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304364104] [2020-10-29 03:30:46,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:46,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:30:46,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237867388] [2020-10-29 03:30:46,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:30:46,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:46,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:30:46,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:30:46,341 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 13 states. [2020-10-29 03:30:46,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:46,586 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-29 03:30:46,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:30:46,587 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-29 03:30:46,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:46,588 INFO L225 Difference]: With dead ends: 68 [2020-10-29 03:30:46,588 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:30:46,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 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 03:30:46,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:30:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-29 03:30:46,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 03:30:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-10-29 03:30:46,608 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 36 [2020-10-29 03:30:46,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:46,609 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-10-29 03:30:46,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:30:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2020-10-29 03:30:46,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:30:46,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:46,613 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:46,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:30:46,614 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:46,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:46,615 INFO L82 PathProgramCache]: Analyzing trace with hash 281829474, now seen corresponding path program 10 times [2020-10-29 03:30:46,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:46,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322574035] [2020-10-29 03:30:46,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:46,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:47,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:30:47,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:47,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-10-29 03:30:47,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:47,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:47,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:30:47,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:47,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:30:47,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:47,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:47,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:47,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:47,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:47,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:47,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:47,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:47,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:47,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:47,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:47,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:47,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322574035] [2020-10-29 03:30:47,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:47,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:30:47,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266880392] [2020-10-29 03:30:47,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:30:47,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:47,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:30:47,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:30:47,768 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 14 states. [2020-10-29 03:30:47,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:47,921 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-10-29 03:30:47,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:30:47,922 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-29 03:30:47,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:47,923 INFO L225 Difference]: With dead ends: 70 [2020-10-29 03:30:47,923 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 03:30:47,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 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 03:30:47,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 03:30:47,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-29 03:30:47,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 03:30:47,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-10-29 03:30:47,936 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 38 [2020-10-29 03:30:47,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:47,937 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-10-29 03:30:47,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:30:47,939 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-10-29 03:30:47,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:30:47,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:47,941 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:47,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:30:47,941 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:47,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:47,942 INFO L82 PathProgramCache]: Analyzing trace with hash -75114940, now seen corresponding path program 11 times [2020-10-29 03:30:47,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:47,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703517078] [2020-10-29 03:30:47,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:47,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:47,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:49,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:49,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:30:49,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1121 [2020-10-29 03:30:49,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:49,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:30:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:30:49,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:49,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:49,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:49,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:49,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:49,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:30:49,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:49,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:49,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:49,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703517078] [2020-10-29 03:30:49,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:49,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:30:49,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854012659] [2020-10-29 03:30:49,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:30:49,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:49,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:30:49,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:30:49,332 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 15 states. [2020-10-29 03:30:49,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:49,499 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-29 03:30:49,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:30:49,500 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-10-29 03:30:49,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:49,501 INFO L225 Difference]: With dead ends: 72 [2020-10-29 03:30:49,501 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 03:30:49,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 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 03:30:49,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 03:30:49,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-29 03:30:49,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 03:30:49,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2020-10-29 03:30:49,514 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 40 [2020-10-29 03:30:49,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:49,514 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2020-10-29 03:30:49,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:30:49,514 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-10-29 03:30:49,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 03:30:49,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:49,515 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:49,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:30:49,515 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:49,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:49,516 INFO L82 PathProgramCache]: Analyzing trace with hash 498686886, now seen corresponding path program 12 times [2020-10-29 03:30:49,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:49,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594487880] [2020-10-29 03:30:49,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:49,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:49,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:50,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:50,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:30:50,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:50,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1220 [2020-10-29 03:30:50,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:50,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:30:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:30:50,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:50,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:50,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:50,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:50,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:50,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:50,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:30:50,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:50,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:50,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:50,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:50,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:50,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:50,988 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:50,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594487880] [2020-10-29 03:30:50,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:50,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:30:50,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166484815] [2020-10-29 03:30:50,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:30:50,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:50,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:30:50,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:30:50,991 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 16 states. [2020-10-29 03:30:51,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:51,172 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2020-10-29 03:30:51,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:30:51,173 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2020-10-29 03:30:51,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:51,174 INFO L225 Difference]: With dead ends: 74 [2020-10-29 03:30:51,174 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 03:30:51,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:30:51,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 03:30:51,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-29 03:30:51,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 03:30:51,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-10-29 03:30:51,180 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 42 [2020-10-29 03:30:51,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:51,180 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-10-29 03:30:51,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:30:51,180 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-10-29 03:30:51,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:30:51,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:51,181 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:51,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:30:51,181 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:51,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:51,182 INFO L82 PathProgramCache]: Analyzing trace with hash -2128539512, now seen corresponding path program 13 times [2020-10-29 03:30:51,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:51,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922132314] [2020-10-29 03:30:51,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:51,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:51,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:52,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:52,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:30:52,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:52,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1291 [2020-10-29 03:30:52,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:52,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:30:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:30:52,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:52,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:52,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:52,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:52,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:52,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:52,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:52,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:52,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:52,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:52,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:30:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:52,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922132314] [2020-10-29 03:30:52,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:52,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:30:52,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463774074] [2020-10-29 03:30:52,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:30:52,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:52,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:30:52,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:30:52,747 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 17 states. [2020-10-29 03:30:52,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:52,965 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-29 03:30:52,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:30:52,966 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2020-10-29 03:30:52,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:52,966 INFO L225 Difference]: With dead ends: 76 [2020-10-29 03:30:52,966 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 03:30:52,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 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 03:30:52,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 03:30:52,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-29 03:30:52,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:30:52,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-10-29 03:30:52,972 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 44 [2020-10-29 03:30:52,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:52,972 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-10-29 03:30:52,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:30:52,973 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-10-29 03:30:52,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:30:52,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:52,976 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:52,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:30:52,976 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:52,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:52,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1452337942, now seen corresponding path program 14 times [2020-10-29 03:30:52,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:52,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602582231] [2020-10-29 03:30:52,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:53,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:53,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:54,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:54,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:30:54,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:54,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1430 [2020-10-29 03:30:54,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:54,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:54,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:30:54,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:54,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:30:54,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:54,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:54,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:54,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:54,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:54,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:54,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:54,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:54,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:54,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:54,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:54,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602582231] [2020-10-29 03:30:54,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:54,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:30:54,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693846984] [2020-10-29 03:30:54,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:30:54,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:54,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:30:54,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:30:54,689 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 18 states. [2020-10-29 03:30:54,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:54,823 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-10-29 03:30:54,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:30:54,823 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2020-10-29 03:30:54,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:54,824 INFO L225 Difference]: With dead ends: 78 [2020-10-29 03:30:54,824 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:30:54,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:30:54,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:30:54,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-29 03:30:54,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:30:54,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-10-29 03:30:54,836 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 46 [2020-10-29 03:30:54,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:54,837 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-10-29 03:30:54,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:30:54,837 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-10-29 03:30:54,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 03:30:54,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:54,838 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:54,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:30:54,839 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:54,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:54,839 INFO L82 PathProgramCache]: Analyzing trace with hash -162690868, now seen corresponding path program 15 times [2020-10-29 03:30:54,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:54,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170056612] [2020-10-29 03:30:54,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:54,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:54,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:56,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:56,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:30:56,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:56,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1621 [2020-10-29 03:30:56,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:56,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:30:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:30:56,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:56,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:56,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:56,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:56,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:56,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:56,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:30:56,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:56,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:56,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170056612] [2020-10-29 03:30:56,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:56,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:30:56,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002863710] [2020-10-29 03:30:56,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:30:56,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:56,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:30:56,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:30:56,759 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 19 states. [2020-10-29 03:30:56,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:56,915 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-29 03:30:56,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:30:56,915 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2020-10-29 03:30:56,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:56,916 INFO L225 Difference]: With dead ends: 80 [2020-10-29 03:30:56,916 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 03:30:56,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:30:56,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 03:30:56,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-29 03:30:56,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 03:30:56,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2020-10-29 03:30:56,922 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 48 [2020-10-29 03:30:56,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:56,922 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2020-10-29 03:30:56,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:30:56,923 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2020-10-29 03:30:56,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 03:30:56,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:56,923 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:56,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:30:56,924 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:56,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:56,925 INFO L82 PathProgramCache]: Analyzing trace with hash -2057401298, now seen corresponding path program 16 times [2020-10-29 03:30:56,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:56,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159234298] [2020-10-29 03:30:56,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:56,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:56,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:58,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:58,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:30:58,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:30:58,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1718 [2020-10-29 03:30:58,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:58,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:30:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:30:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:30:58,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:58,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:58,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:58,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:58,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:58,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:58,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:30:58,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:58,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:58,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:58,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:58,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:58,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:58,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159234298] [2020-10-29 03:30:58,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:58,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:30:58,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991324103] [2020-10-29 03:30:58,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:30:58,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:58,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:30:58,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:30:58,989 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand 20 states. [2020-10-29 03:30:59,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:30:59,189 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2020-10-29 03:30:59,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:30:59,189 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2020-10-29 03:30:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:30:59,190 INFO L225 Difference]: With dead ends: 82 [2020-10-29 03:30:59,190 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:30:59,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:30:59,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:30:59,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-29 03:30:59,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 03:30:59,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-10-29 03:30:59,199 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 50 [2020-10-29 03:30:59,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:30:59,199 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-10-29 03:30:59,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:30:59,200 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-10-29 03:30:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:30:59,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:30:59,200 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:30:59,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:30:59,201 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:30:59,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:30:59,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1807991024, now seen corresponding path program 17 times [2020-10-29 03:30:59,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:30:59,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021695654] [2020-10-29 03:30:59,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:30:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:59,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:59,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:00,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:00,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:31:00,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:00,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1738 [2020-10-29 03:31:00,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:00,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:31:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:31:00,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:01,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:01,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:01,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:01,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:01,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:01,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:31:01,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:01,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:01,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:01,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:01,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:31:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:01,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021695654] [2020-10-29 03:31:01,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:01,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:31:01,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055147329] [2020-10-29 03:31:01,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:31:01,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:01,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:31:01,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:31:01,304 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 21 states. [2020-10-29 03:31:01,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:01,546 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-29 03:31:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:31:01,547 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2020-10-29 03:31:01,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:01,548 INFO L225 Difference]: With dead ends: 84 [2020-10-29 03:31:01,548 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 03:31:01,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:31:01,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 03:31:01,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-29 03:31:01,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 03:31:01,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2020-10-29 03:31:01,554 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 52 [2020-10-29 03:31:01,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:01,555 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2020-10-29 03:31:01,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:31:01,555 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2020-10-29 03:31:01,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:31:01,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:01,556 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:01,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:31:01,556 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:01,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:01,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1652081010, now seen corresponding path program 18 times [2020-10-29 03:31:01,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:01,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493138068] [2020-10-29 03:31:01,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:01,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:01,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:03,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:03,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:31:03,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:03,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1828 [2020-10-29 03:31:03,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:03,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:03,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:31:03,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:03,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:31:03,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:03,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:03,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:03,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:03,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:03,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:03,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:03,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:03,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:03,759 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:03,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493138068] [2020-10-29 03:31:03,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:03,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:31:03,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117726650] [2020-10-29 03:31:03,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:31:03,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:03,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:31:03,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:31:03,762 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 22 states. [2020-10-29 03:31:03,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:03,932 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2020-10-29 03:31:03,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:31:03,933 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2020-10-29 03:31:03,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:03,933 INFO L225 Difference]: With dead ends: 86 [2020-10-29 03:31:03,934 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:31:03,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:31:03,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:31:03,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-29 03:31:03,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:31:03,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2020-10-29 03:31:03,946 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 54 [2020-10-29 03:31:03,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:03,947 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2020-10-29 03:31:03,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:31:03,947 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2020-10-29 03:31:03,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:31:03,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:03,948 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:03,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:31:03,948 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:03,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:03,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1818348716, now seen corresponding path program 19 times [2020-10-29 03:31:03,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:03,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314946890] [2020-10-29 03:31:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:03,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:04,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:05,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:05,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:31:05,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:05,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1968 [2020-10-29 03:31:05,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:05,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:05,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:31:05,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:05,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:31:05,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:31:06,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:06,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:06,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:06,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:06,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:06,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:06,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:06,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:06,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:06,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314946890] [2020-10-29 03:31:06,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:06,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:31:06,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104311170] [2020-10-29 03:31:06,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:31:06,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:06,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:31:06,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:31:06,372 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 23 states. [2020-10-29 03:31:06,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:06,627 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-29 03:31:06,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:31:06,627 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 56 [2020-10-29 03:31:06,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:06,628 INFO L225 Difference]: With dead ends: 88 [2020-10-29 03:31:06,628 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 03:31:06,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:31:06,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 03:31:06,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-29 03:31:06,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 03:31:06,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-10-29 03:31:06,638 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 56 [2020-10-29 03:31:06,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:06,638 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-10-29 03:31:06,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:31:06,638 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-10-29 03:31:06,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:31:06,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:06,642 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:06,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:31:06,642 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:06,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:06,643 INFO L82 PathProgramCache]: Analyzing trace with hash 288273590, now seen corresponding path program 20 times [2020-10-29 03:31:06,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:06,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538898927] [2020-10-29 03:31:06,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:06,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:06,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:08,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:08,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:31:08,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:08,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1959 [2020-10-29 03:31:08,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:08,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:08,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:31:08,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:08,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:31:08,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:09,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:09,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:09,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:09,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:09,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:09,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:09,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:09,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:09,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:09,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:09,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:09,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:09,018 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:09,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538898927] [2020-10-29 03:31:09,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:09,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:31:09,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206745663] [2020-10-29 03:31:09,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:31:09,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:09,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:31:09,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:31:09,021 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 24 states. [2020-10-29 03:31:09,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:09,285 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2020-10-29 03:31:09,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:31:09,289 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 58 [2020-10-29 03:31:09,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:09,290 INFO L225 Difference]: With dead ends: 90 [2020-10-29 03:31:09,290 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 03:31:09,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:31:09,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 03:31:09,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-29 03:31:09,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 03:31:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2020-10-29 03:31:09,305 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 58 [2020-10-29 03:31:09,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:09,306 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2020-10-29 03:31:09,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:31:09,306 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2020-10-29 03:31:09,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 03:31:09,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:09,308 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:09,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:31:09,310 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:09,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:09,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1822713240, now seen corresponding path program 21 times [2020-10-29 03:31:09,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:09,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606956944] [2020-10-29 03:31:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:09,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:09,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:11,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:11,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:31:11,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:11,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2219 [2020-10-29 03:31:11,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:11,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:11,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:31:11,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:11,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:31:11,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:12,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:12,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:12,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:12,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:12,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:12,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:31:12,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:12,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:12,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:31:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:12,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606956944] [2020-10-29 03:31:12,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:12,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:31:12,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359009569] [2020-10-29 03:31:12,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:31:12,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:12,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:31:12,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:31:12,149 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand 25 states. [2020-10-29 03:31:12,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:12,362 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-29 03:31:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:31:12,362 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2020-10-29 03:31:12,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:12,363 INFO L225 Difference]: With dead ends: 92 [2020-10-29 03:31:12,363 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 03:31:12,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:31:12,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 03:31:12,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-29 03:31:12,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 03:31:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2020-10-29 03:31:12,370 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 60 [2020-10-29 03:31:12,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:12,370 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2020-10-29 03:31:12,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:31:12,371 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2020-10-29 03:31:12,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 03:31:12,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:12,372 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:12,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:31:12,372 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:12,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:12,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1049532934, now seen corresponding path program 22 times [2020-10-29 03:31:12,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:12,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527751993] [2020-10-29 03:31:12,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:12,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:12,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:14,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:14,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:31:14,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:14,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2230 [2020-10-29 03:31:14,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:14,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:14,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:31:14,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:14,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:31:14,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:15,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:15,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:15,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:15,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:15,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:15,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:15,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:15,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:15,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:15,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:15,115 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:15,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527751993] [2020-10-29 03:31:15,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:15,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:31:15,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168153809] [2020-10-29 03:31:15,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:31:15,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:15,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:31:15,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:31:15,118 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand 26 states. [2020-10-29 03:31:15,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:15,366 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2020-10-29 03:31:15,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:31:15,366 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2020-10-29 03:31:15,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:15,367 INFO L225 Difference]: With dead ends: 94 [2020-10-29 03:31:15,368 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:31:15,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:31:15,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:31:15,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-29 03:31:15,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 03:31:15,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-10-29 03:31:15,376 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 62 [2020-10-29 03:31:15,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:15,376 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-10-29 03:31:15,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:31:15,376 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-10-29 03:31:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:31:15,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:15,377 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:15,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:31:15,379 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:15,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:15,380 INFO L82 PathProgramCache]: Analyzing trace with hash 385865180, now seen corresponding path program 23 times [2020-10-29 03:31:15,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:15,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160009456] [2020-10-29 03:31:15,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:15,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:15,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:17,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:17,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 03:31:17,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:17,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2322 [2020-10-29 03:31:17,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:17,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:31:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:31:17,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:18,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:18,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:18,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:18,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:18,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:18,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:31:18,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:18,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:18,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:18,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:18,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:18,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:18,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160009456] [2020-10-29 03:31:18,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:18,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:31:18,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201384517] [2020-10-29 03:31:18,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:31:18,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:18,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:31:18,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:31:18,246 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 27 states. [2020-10-29 03:31:18,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:18,537 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-29 03:31:18,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:31:18,537 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 64 [2020-10-29 03:31:18,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:18,538 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:31:18,538 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 03:31:18,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:31:18,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 03:31:18,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-29 03:31:18,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:31:18,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-10-29 03:31:18,544 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 64 [2020-10-29 03:31:18,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:18,544 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-10-29 03:31:18,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:31:18,544 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-10-29 03:31:18,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 03:31:18,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:18,545 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:18,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:31:18,545 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:18,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:18,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1118950718, now seen corresponding path program 24 times [2020-10-29 03:31:18,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:18,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382563875] [2020-10-29 03:31:18,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:18,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:20,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:20,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 03:31:20,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:20,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2309 [2020-10-29 03:31:20,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:20,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:31:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:31:20,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:21,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:21,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:21,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:21,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:21,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:21,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:21,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:21,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:21,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:21,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:21,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:21,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:21,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382563875] [2020-10-29 03:31:21,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:21,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:31:21,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523028186] [2020-10-29 03:31:21,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:31:21,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:21,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:31:21,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:31:21,456 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 28 states. [2020-10-29 03:31:21,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:21,633 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2020-10-29 03:31:21,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:31:21,633 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 66 [2020-10-29 03:31:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:21,634 INFO L225 Difference]: With dead ends: 98 [2020-10-29 03:31:21,634 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 03:31:21,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:31:21,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 03:31:21,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-29 03:31:21,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:31:21,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-10-29 03:31:21,642 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 66 [2020-10-29 03:31:21,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:21,643 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-10-29 03:31:21,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:31:21,643 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-10-29 03:31:21,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 03:31:21,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:21,644 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:21,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:31:21,644 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:21,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:21,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1239516192, now seen corresponding path program 25 times [2020-10-29 03:31:21,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:21,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460540004] [2020-10-29 03:31:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:21,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:21,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:24,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:24,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:31:24,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:24,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2354 [2020-10-29 03:31:24,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:24,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:24,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:31:24,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:24,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:31:24,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:24,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:24,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:24,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:24,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:24,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:24,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:24,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:24,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:24,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:24,646 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:24,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460540004] [2020-10-29 03:31:24,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:24,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:31:24,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067097732] [2020-10-29 03:31:24,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:31:24,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:24,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:31:24,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:31:24,649 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 29 states. [2020-10-29 03:31:24,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:24,987 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-29 03:31:24,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:31:24,987 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 68 [2020-10-29 03:31:24,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:24,988 INFO L225 Difference]: With dead ends: 100 [2020-10-29 03:31:24,988 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 03:31:24,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:31:24,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 03:31:24,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-29 03:31:24,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 03:31:24,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-10-29 03:31:24,996 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 68 [2020-10-29 03:31:24,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:24,996 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-10-29 03:31:24,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:31:24,997 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-10-29 03:31:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:31:24,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:24,998 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:24,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:31:24,998 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:24,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:24,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1138819714, now seen corresponding path program 26 times [2020-10-29 03:31:24,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:24,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670152457] [2020-10-29 03:31:24,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:25,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:27,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:27,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 03:31:27,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:27,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2405 [2020-10-29 03:31:27,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:27,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:31:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:31:27,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:28,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:28,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:28,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:28,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:28,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:28,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:31:28,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:28,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:28,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:28,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:28,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:28,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:28,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670152457] [2020-10-29 03:31:28,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:28,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:31:28,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367510937] [2020-10-29 03:31:28,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:31:28,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:28,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:31:28,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:31:28,079 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 30 states. [2020-10-29 03:31:28,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:28,342 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2020-10-29 03:31:28,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:31:28,343 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2020-10-29 03:31:28,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:28,344 INFO L225 Difference]: With dead ends: 102 [2020-10-29 03:31:28,344 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 03:31:28,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:31:28,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 03:31:28,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-29 03:31:28,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 03:31:28,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2020-10-29 03:31:28,350 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 70 [2020-10-29 03:31:28,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:28,350 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2020-10-29 03:31:28,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:31:28,351 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2020-10-29 03:31:28,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 03:31:28,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:28,351 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:28,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:31:28,352 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:28,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:28,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1141215132, now seen corresponding path program 27 times [2020-10-29 03:31:28,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:28,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752390106] [2020-10-29 03:31:28,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:28,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:28,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:30,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:30,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 03:31:30,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:30,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2549 [2020-10-29 03:31:30,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:30,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:31:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:31:30,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:31,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:31,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:31,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:31,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:31,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:31,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:31:31,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:31,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:31,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:31,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752390106] [2020-10-29 03:31:31,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:31,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:31:31,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962998724] [2020-10-29 03:31:31,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:31:31,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:31,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:31:31,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:31:31,607 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand 31 states. [2020-10-29 03:31:31,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:31,932 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-29 03:31:31,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:31:31,933 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 72 [2020-10-29 03:31:31,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:31,934 INFO L225 Difference]: With dead ends: 104 [2020-10-29 03:31:31,935 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:31:31,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:31:31,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:31:31,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-29 03:31:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:31:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2020-10-29 03:31:31,944 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 72 [2020-10-29 03:31:31,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:31,944 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2020-10-29 03:31:31,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:31:31,944 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2020-10-29 03:31:31,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 03:31:31,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:31,945 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:31,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:31:31,946 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:31,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:31,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1821381178, now seen corresponding path program 28 times [2020-10-29 03:31:31,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:31,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034464242] [2020-10-29 03:31:31,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:31,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:32,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:34,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:34,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 03:31:34,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:34,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2927 [2020-10-29 03:31:34,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:34,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:31:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:34,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:31:34,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:35,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:35,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:35,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:35,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:35,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:35,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:35,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:35,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:35,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:35,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034464242] [2020-10-29 03:31:35,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:35,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:31:35,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5393148] [2020-10-29 03:31:35,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:31:35,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:35,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:31:35,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:31:35,616 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 32 states. [2020-10-29 03:31:35,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:35,966 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2020-10-29 03:31:35,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:31:35,966 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 74 [2020-10-29 03:31:35,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:35,968 INFO L225 Difference]: With dead ends: 106 [2020-10-29 03:31:35,968 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:31:35,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:31:35,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:31:35,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-29 03:31:35,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 03:31:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2020-10-29 03:31:35,974 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 74 [2020-10-29 03:31:35,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:35,975 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2020-10-29 03:31:35,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:31:35,975 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2020-10-29 03:31:35,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:31:35,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:35,976 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:35,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:31:35,976 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:35,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1669044904, now seen corresponding path program 29 times [2020-10-29 03:31:35,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:35,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435787053] [2020-10-29 03:31:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:36,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:36,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:38,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:38,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:31:38,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:38,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2959 [2020-10-29 03:31:38,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:38,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:31:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:31:38,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:39,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:39,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:39,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:39,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:39,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:39,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:39,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:39,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:39,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:39,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435787053] [2020-10-29 03:31:39,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:39,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:31:39,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373680969] [2020-10-29 03:31:39,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:31:39,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:39,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:31:39,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:31:39,744 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 33 states. [2020-10-29 03:31:40,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:40,100 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-29 03:31:40,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:31:40,100 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 76 [2020-10-29 03:31:40,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:40,101 INFO L225 Difference]: With dead ends: 108 [2020-10-29 03:31:40,102 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 03:31:40,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:31:40,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 03:31:40,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-29 03:31:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 03:31:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 92 transitions. [2020-10-29 03:31:40,108 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 92 transitions. Word has length 76 [2020-10-29 03:31:40,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:40,108 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 92 transitions. [2020-10-29 03:31:40,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:31:40,108 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 92 transitions. [2020-10-29 03:31:40,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 03:31:40,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:40,109 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:40,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:31:40,109 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:40,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:40,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1599051530, now seen corresponding path program 30 times [2020-10-29 03:31:40,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:40,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360599461] [2020-10-29 03:31:40,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:40,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:40,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:43,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:43,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 03:31:43,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:43,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3343 [2020-10-29 03:31:43,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:43,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:43,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:31:43,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:43,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:31:43,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:44,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:44,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:44,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:44,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:44,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:44,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:44,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:44,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:44,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:44,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:44,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:44,333 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:44,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360599461] [2020-10-29 03:31:44,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:44,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:31:44,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724781601] [2020-10-29 03:31:44,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:31:44,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:44,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:31:44,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:31:44,335 INFO L87 Difference]: Start difference. First operand 87 states and 92 transitions. Second operand 34 states. [2020-10-29 03:31:44,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:44,718 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-10-29 03:31:44,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:31:44,719 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 78 [2020-10-29 03:31:44,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:44,721 INFO L225 Difference]: With dead ends: 110 [2020-10-29 03:31:44,721 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:31:44,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:31:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:31:44,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-29 03:31:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 03:31:44,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2020-10-29 03:31:44,727 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 78 [2020-10-29 03:31:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:44,727 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2020-10-29 03:31:44,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:31:44,728 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2020-10-29 03:31:44,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 03:31:44,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:44,729 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:44,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:31:44,729 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:44,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:44,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1240071444, now seen corresponding path program 31 times [2020-10-29 03:31:44,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:44,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095222129] [2020-10-29 03:31:44,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:44,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:44,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:48,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:48,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:31:48,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:48,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3375 [2020-10-29 03:31:48,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:48,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:31:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:31:48,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:48,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:48,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:48,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:48,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:48,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:48,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:31:48,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:48,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:48,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:48,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:48,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:48,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:48,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095222129] [2020-10-29 03:31:48,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:48,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:31:48,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907274431] [2020-10-29 03:31:48,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:31:48,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:48,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:31:48,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:31:48,956 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand 35 states. [2020-10-29 03:31:49,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:49,187 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-29 03:31:49,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:31:49,187 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 80 [2020-10-29 03:31:49,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:49,189 INFO L225 Difference]: With dead ends: 112 [2020-10-29 03:31:49,189 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:31:49,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:31:49,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:31:49,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-29 03:31:49,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 03:31:49,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2020-10-29 03:31:49,195 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 80 [2020-10-29 03:31:49,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:49,195 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2020-10-29 03:31:49,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:31:49,195 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2020-10-29 03:31:49,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 03:31:49,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:49,196 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:49,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:31:49,196 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:49,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:49,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1961950798, now seen corresponding path program 32 times [2020-10-29 03:31:49,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:49,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108544749] [2020-10-29 03:31:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:49,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:49,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:52,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:52,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 03:31:52,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:52,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3632 [2020-10-29 03:31:52,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:52,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:31:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:31:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:53,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:53,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:53,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:53,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:53,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:53,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:53,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:53,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:53,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:53,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:53,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:53,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:53,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:53,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108544749] [2020-10-29 03:31:53,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:53,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:31:53,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168212781] [2020-10-29 03:31:53,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:31:53,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:53,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:31:53,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:31:53,776 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand 36 states. [2020-10-29 03:31:54,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:54,133 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2020-10-29 03:31:54,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:31:54,134 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 82 [2020-10-29 03:31:54,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:54,137 INFO L225 Difference]: With dead ends: 114 [2020-10-29 03:31:54,137 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 03:31:54,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:31:54,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 03:31:54,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-29 03:31:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-29 03:31:54,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2020-10-29 03:31:54,148 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 82 [2020-10-29 03:31:54,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:54,149 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2020-10-29 03:31:54,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:31:54,154 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2020-10-29 03:31:54,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 03:31:54,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:54,155 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:54,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:31:54,156 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:54,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:54,156 INFO L82 PathProgramCache]: Analyzing trace with hash -386225872, now seen corresponding path program 33 times [2020-10-29 03:31:54,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:54,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438366998] [2020-10-29 03:31:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:54,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:58,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:58,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 03:31:58,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:31:58,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4180 [2020-10-29 03:31:58,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:58,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:58,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:31:58,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:31:58,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 03:31:58,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:59,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:31:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:59,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:59,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:31:59,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:31:59,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:31:59,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:31:59,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:31:59,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:31:59,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:31:59,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:31:59,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:31:59,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:31:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:31:59,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438366998] [2020-10-29 03:31:59,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:31:59,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:31:59,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461333118] [2020-10-29 03:31:59,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:31:59,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:31:59,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:31:59,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:31:59,298 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand 37 states. [2020-10-29 03:31:59,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:31:59,687 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-29 03:31:59,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:31:59,687 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 84 [2020-10-29 03:31:59,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:31:59,689 INFO L225 Difference]: With dead ends: 116 [2020-10-29 03:31:59,689 INFO L226 Difference]: Without dead ends: 96 [2020-10-29 03:31:59,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:31:59,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-29 03:31:59,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-29 03:31:59,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 03:31:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2020-10-29 03:31:59,696 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 84 [2020-10-29 03:31:59,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:31:59,696 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2020-10-29 03:31:59,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:31:59,696 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2020-10-29 03:31:59,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-29 03:31:59,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:31:59,697 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:31:59,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:31:59,697 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:31:59,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:31:59,698 INFO L82 PathProgramCache]: Analyzing trace with hash -2126175342, now seen corresponding path program 34 times [2020-10-29 03:31:59,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:31:59,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202714340] [2020-10-29 03:31:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:31:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:31:59,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:31:59,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:03,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:03,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 03:32:03,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:03,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4119 [2020-10-29 03:32:03,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:03,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:03,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:32:03,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:03,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 03:32:03,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:04,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:04,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:04,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:04,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:04,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:04,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:04,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:04,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:04,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:04,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:04,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:04,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:04,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202714340] [2020-10-29 03:32:04,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:04,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:32:04,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855225643] [2020-10-29 03:32:04,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:32:04,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:04,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:32:04,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:32:04,866 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand 38 states. [2020-10-29 03:32:05,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:05,235 INFO L93 Difference]: Finished difference Result 118 states and 128 transitions. [2020-10-29 03:32:05,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:32:05,235 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 86 [2020-10-29 03:32:05,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:05,237 INFO L225 Difference]: With dead ends: 118 [2020-10-29 03:32:05,237 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 03:32:05,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:32:05,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 03:32:05,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-29 03:32:05,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-29 03:32:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 102 transitions. [2020-10-29 03:32:05,244 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 102 transitions. Word has length 86 [2020-10-29 03:32:05,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:05,245 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 102 transitions. [2020-10-29 03:32:05,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:32:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 102 transitions. [2020-10-29 03:32:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 03:32:05,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:05,245 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:05,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:32:05,246 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:05,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:05,246 INFO L82 PathProgramCache]: Analyzing trace with hash 819629428, now seen corresponding path program 35 times [2020-10-29 03:32:05,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:05,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654965661] [2020-10-29 03:32:05,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:05,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:09,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:09,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 03:32:09,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:09,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4435 [2020-10-29 03:32:09,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:09,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:09,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 03:32:09,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 03:32:09,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:10,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:10,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:10,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:10,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:10,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:10,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:10,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:10,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:10,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:10,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654965661] [2020-10-29 03:32:10,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:10,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 03:32:10,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609213846] [2020-10-29 03:32:10,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 03:32:10,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:10,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 03:32:10,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:32:10,826 INFO L87 Difference]: Start difference. First operand 97 states and 102 transitions. Second operand 39 states. [2020-10-29 03:32:11,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:11,070 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-29 03:32:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:32:11,071 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 88 [2020-10-29 03:32:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:11,072 INFO L225 Difference]: With dead ends: 120 [2020-10-29 03:32:11,072 INFO L226 Difference]: Without dead ends: 100 [2020-10-29 03:32:11,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:32:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-29 03:32:11,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-29 03:32:11,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 03:32:11,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions. [2020-10-29 03:32:11,079 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 88 [2020-10-29 03:32:11,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:11,079 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions. [2020-10-29 03:32:11,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-29 03:32:11,080 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions. [2020-10-29 03:32:11,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 03:32:11,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:11,081 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:11,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:32:11,081 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:11,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:11,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1354565334, now seen corresponding path program 36 times [2020-10-29 03:32:11,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:11,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137746561] [2020-10-29 03:32:11,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:11,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:11,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:15,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:15,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 03:32:15,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:15,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4881 [2020-10-29 03:32:15,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:15,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:15,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 03:32:15,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:15,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 03:32:15,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:17,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:17,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:17,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:17,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:17,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:32:17,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:17,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:17,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:17,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:17,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:17,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:17,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137746561] [2020-10-29 03:32:17,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:17,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 03:32:17,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744093568] [2020-10-29 03:32:17,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 03:32:17,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:17,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 03:32:17,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:32:17,107 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand 40 states. [2020-10-29 03:32:17,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:17,537 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-10-29 03:32:17,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 03:32:17,537 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 90 [2020-10-29 03:32:17,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:17,539 INFO L225 Difference]: With dead ends: 122 [2020-10-29 03:32:17,539 INFO L226 Difference]: Without dead ends: 102 [2020-10-29 03:32:17,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:32:17,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-29 03:32:17,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-29 03:32:17,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 03:32:17,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions. [2020-10-29 03:32:17,545 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 90 [2020-10-29 03:32:17,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:17,545 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions. [2020-10-29 03:32:17,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 03:32:17,545 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions. [2020-10-29 03:32:17,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 03:32:17,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:17,546 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:17,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 03:32:17,547 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:17,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:17,547 INFO L82 PathProgramCache]: Analyzing trace with hash 31895480, now seen corresponding path program 37 times [2020-10-29 03:32:17,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:17,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257866439] [2020-10-29 03:32:17,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:17,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:22,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:22,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 03:32:22,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4994 [2020-10-29 03:32:22,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:22,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-29 03:32:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 03:32:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:23,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:23,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:23,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:23,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:23,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:23,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:32:23,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:23,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:23,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257866439] [2020-10-29 03:32:23,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:23,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-29 03:32:23,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243182707] [2020-10-29 03:32:23,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-29 03:32:23,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:23,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-29 03:32:23,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:32:23,699 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand 41 states. [2020-10-29 03:32:24,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:24,146 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-29 03:32:24,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 03:32:24,147 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 92 [2020-10-29 03:32:24,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:24,148 INFO L225 Difference]: With dead ends: 124 [2020-10-29 03:32:24,148 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 03:32:24,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:32:24,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 03:32:24,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-29 03:32:24,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 03:32:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-10-29 03:32:24,155 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 92 [2020-10-29 03:32:24,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:24,155 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-10-29 03:32:24,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-29 03:32:24,155 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-10-29 03:32:24,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 03:32:24,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:24,157 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:24,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 03:32:24,157 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:24,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:24,158 INFO L82 PathProgramCache]: Analyzing trace with hash 256485402, now seen corresponding path program 38 times [2020-10-29 03:32:24,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:24,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845196241] [2020-10-29 03:32:24,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:24,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:24,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:29,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:29,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 03:32:29,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:29,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:32:29,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:29,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:29,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-29 03:32:29,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:29,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 03:32:29,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:30,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:30,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:30,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:30,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:30,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:30,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:30,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:30,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:30,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:30,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:30,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:30,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:30,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845196241] [2020-10-29 03:32:30,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:30,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 03:32:30,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082650841] [2020-10-29 03:32:30,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 03:32:30,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:30,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 03:32:30,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:32:30,442 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 42 states. [2020-10-29 03:32:30,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:30,915 INFO L93 Difference]: Finished difference Result 126 states and 136 transitions. [2020-10-29 03:32:30,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 03:32:30,916 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 94 [2020-10-29 03:32:30,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:30,917 INFO L225 Difference]: With dead ends: 126 [2020-10-29 03:32:30,917 INFO L226 Difference]: Without dead ends: 106 [2020-10-29 03:32:30,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:32:30,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-29 03:32:30,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-29 03:32:30,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-29 03:32:30,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2020-10-29 03:32:30,923 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 94 [2020-10-29 03:32:30,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:30,924 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2020-10-29 03:32:30,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 03:32:30,924 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2020-10-29 03:32:30,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 03:32:30,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:30,925 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:30,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 03:32:30,925 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:30,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:30,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1339035644, now seen corresponding path program 39 times [2020-10-29 03:32:30,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:30,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138510472] [2020-10-29 03:32:30,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:30,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:30,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:35,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:35,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 03:32:35,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:35,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 03:32:35,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:35,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:35,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-29 03:32:35,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:35,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 03:32:35,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:37,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:37,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:37,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:37,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:37,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:37,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:32:37,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:37,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:37,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:37,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138510472] [2020-10-29 03:32:37,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:37,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-29 03:32:37,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078128581] [2020-10-29 03:32:37,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-29 03:32:37,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:37,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-29 03:32:37,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:32:37,275 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand 43 states. [2020-10-29 03:32:37,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:37,751 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-29 03:32:37,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-29 03:32:37,752 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 96 [2020-10-29 03:32:37,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:37,753 INFO L225 Difference]: With dead ends: 128 [2020-10-29 03:32:37,754 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 03:32:37,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:32:37,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 03:32:37,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-29 03:32:37,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 03:32:37,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2020-10-29 03:32:37,759 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 96 [2020-10-29 03:32:37,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:37,760 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 112 transitions. [2020-10-29 03:32:37,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-29 03:32:37,760 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 112 transitions. [2020-10-29 03:32:37,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 03:32:37,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:37,761 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:37,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 03:32:37,761 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:37,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:37,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2007234722, now seen corresponding path program 40 times [2020-10-29 03:32:37,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:37,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743976024] [2020-10-29 03:32:37,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:37,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:37,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:42,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:42,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 03:32:42,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:42,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 03:32:42,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:42,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:42,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-29 03:32:42,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:42,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 03:32:42,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:44,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:44,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:44,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:44,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:44,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:44,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:32:44,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:44,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:44,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:44,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:44,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743976024] [2020-10-29 03:32:44,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:44,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-29 03:32:44,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791125448] [2020-10-29 03:32:44,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-29 03:32:44,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:44,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-29 03:32:44,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:32:44,186 INFO L87 Difference]: Start difference. First operand 107 states and 112 transitions. Second operand 44 states. [2020-10-29 03:32:44,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:44,643 INFO L93 Difference]: Finished difference Result 130 states and 140 transitions. [2020-10-29 03:32:44,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 03:32:44,644 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 98 [2020-10-29 03:32:44,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:44,645 INFO L225 Difference]: With dead ends: 130 [2020-10-29 03:32:44,645 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 03:32:44,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:32:44,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 03:32:44,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-29 03:32:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-29 03:32:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 114 transitions. [2020-10-29 03:32:44,650 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 114 transitions. Word has length 98 [2020-10-29 03:32:44,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:44,650 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 114 transitions. [2020-10-29 03:32:44,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-29 03:32:44,650 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 114 transitions. [2020-10-29 03:32:44,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 03:32:44,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:44,651 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:44,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 03:32:44,651 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:44,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:44,652 INFO L82 PathProgramCache]: Analyzing trace with hash -842551744, now seen corresponding path program 41 times [2020-10-29 03:32:44,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:44,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066052363] [2020-10-29 03:32:44,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:44,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:44,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:49,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:49,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 03:32:49,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:32:49,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:49,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-29 03:32:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 03:32:49,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:51,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:51,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:51,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:51,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:51,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:51,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:32:51,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:51,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:51,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:51,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:51,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:51,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:51,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:51,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066052363] [2020-10-29 03:32:51,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:51,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-29 03:32:51,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323800745] [2020-10-29 03:32:51,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-29 03:32:51,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:51,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-29 03:32:51,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:32:51,125 INFO L87 Difference]: Start difference. First operand 109 states and 114 transitions. Second operand 45 states. [2020-10-29 03:32:51,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:51,450 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-29 03:32:51,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-29 03:32:51,451 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 100 [2020-10-29 03:32:51,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:51,453 INFO L225 Difference]: With dead ends: 132 [2020-10-29 03:32:51,453 INFO L226 Difference]: Without dead ends: 112 [2020-10-29 03:32:51,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:32:51,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-29 03:32:51,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-29 03:32:51,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 03:32:51,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 116 transitions. [2020-10-29 03:32:51,459 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 116 transitions. Word has length 100 [2020-10-29 03:32:51,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:51,460 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 116 transitions. [2020-10-29 03:32:51,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-29 03:32:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 116 transitions. [2020-10-29 03:32:51,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 03:32:51,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:51,461 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:51,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 03:32:51,461 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:51,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:51,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1726293154, now seen corresponding path program 42 times [2020-10-29 03:32:51,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:51,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845638063] [2020-10-29 03:32:51,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:51,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:51,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:56,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:56,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 03:32:56,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:32:56,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:32:56,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:56,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:56,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-29 03:32:56,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:32:56,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 03:32:56,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:58,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:32:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:58,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:58,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:32:58,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:32:58,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:32:58,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:32:58,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:32:58,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:32:58,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:32:58,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:32:58,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:32:58,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:32:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:32:58,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845638063] [2020-10-29 03:32:58,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:32:58,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-29 03:32:58,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821116177] [2020-10-29 03:32:58,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-29 03:32:58,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:32:58,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-29 03:32:58,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:32:58,022 INFO L87 Difference]: Start difference. First operand 111 states and 116 transitions. Second operand 46 states. [2020-10-29 03:32:58,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:32:58,497 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2020-10-29 03:32:58,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 03:32:58,498 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 102 [2020-10-29 03:32:58,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:32:58,499 INFO L225 Difference]: With dead ends: 134 [2020-10-29 03:32:58,499 INFO L226 Difference]: Without dead ends: 114 [2020-10-29 03:32:58,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:32:58,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-29 03:32:58,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-29 03:32:58,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-29 03:32:58,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 118 transitions. [2020-10-29 03:32:58,505 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 118 transitions. Word has length 102 [2020-10-29 03:32:58,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:32:58,506 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 118 transitions. [2020-10-29 03:32:58,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-29 03:32:58,506 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 118 transitions. [2020-10-29 03:32:58,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 03:32:58,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:32:58,507 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:32:58,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 03:32:58,507 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:32:58,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:32:58,507 INFO L82 PathProgramCache]: Analyzing trace with hash 780044932, now seen corresponding path program 43 times [2020-10-29 03:32:58,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:32:58,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462166056] [2020-10-29 03:32:58,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:32:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:32:58,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:32:58,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:03,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:03,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 03:33:03,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:03,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 03:33:03,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:03,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:03,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-29 03:33:03,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:03,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 03:33:03,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:05,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:05,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:05,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:05,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:05,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:05,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:05,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:05,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:05,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:05,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:05,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:05,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:05,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:05,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462166056] [2020-10-29 03:33:05,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:05,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-29 03:33:05,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471473704] [2020-10-29 03:33:05,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-29 03:33:05,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:05,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-29 03:33:05,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:33:05,118 INFO L87 Difference]: Start difference. First operand 113 states and 118 transitions. Second operand 47 states. [2020-10-29 03:33:05,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:05,412 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-29 03:33:05,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-29 03:33:05,413 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 104 [2020-10-29 03:33:05,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:05,414 INFO L225 Difference]: With dead ends: 136 [2020-10-29 03:33:05,414 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 03:33:05,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:33:05,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 03:33:05,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-29 03:33:05,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-29 03:33:05,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2020-10-29 03:33:05,419 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 104 [2020-10-29 03:33:05,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:05,419 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2020-10-29 03:33:05,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-29 03:33:05,419 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2020-10-29 03:33:05,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 03:33:05,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:05,421 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:05,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 03:33:05,421 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:05,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:05,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1968570342, now seen corresponding path program 44 times [2020-10-29 03:33:05,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:05,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464688384] [2020-10-29 03:33:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:05,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:05,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:10,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:10,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 03:33:10,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:10,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:33:10,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:10,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:10,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-29 03:33:10,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:10,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 03:33:10,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:11,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:11,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:11,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:11,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:11,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:11,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:11,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:11,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:11,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:11,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:11,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:11,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:11,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:11,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464688384] [2020-10-29 03:33:11,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:11,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-29 03:33:11,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256922595] [2020-10-29 03:33:11,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-29 03:33:11,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:11,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-29 03:33:11,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:33:11,960 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand 48 states. [2020-10-29 03:33:12,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:12,459 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2020-10-29 03:33:12,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-29 03:33:12,460 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 106 [2020-10-29 03:33:12,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:12,462 INFO L225 Difference]: With dead ends: 138 [2020-10-29 03:33:12,462 INFO L226 Difference]: Without dead ends: 118 [2020-10-29 03:33:12,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:33:12,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-29 03:33:12,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-29 03:33:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 03:33:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2020-10-29 03:33:12,470 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 106 [2020-10-29 03:33:12,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:12,470 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2020-10-29 03:33:12,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-29 03:33:12,471 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2020-10-29 03:33:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 03:33:12,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:12,471 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:12,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-29 03:33:12,472 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:12,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:12,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1680188616, now seen corresponding path program 45 times [2020-10-29 03:33:12,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:12,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221879613] [2020-10-29 03:33:12,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:12,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:12,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:17,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:17,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 03:33:17,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:17,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:33:17,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:17,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:17,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-29 03:33:17,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:17,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 03:33:17,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:19,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:19,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:19,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:19,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:19,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:19,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:19,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:19,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:19,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:19,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:19,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221879613] [2020-10-29 03:33:19,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:19,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-29 03:33:19,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218639129] [2020-10-29 03:33:19,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-29 03:33:19,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:19,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-29 03:33:19,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:33:19,242 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand 49 states. [2020-10-29 03:33:19,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:19,695 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-29 03:33:19,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-29 03:33:19,696 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 108 [2020-10-29 03:33:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:19,698 INFO L225 Difference]: With dead ends: 140 [2020-10-29 03:33:19,698 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 03:33:19,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:33:19,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 03:33:19,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-10-29 03:33:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-29 03:33:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2020-10-29 03:33:19,704 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 108 [2020-10-29 03:33:19,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:19,704 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2020-10-29 03:33:19,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-29 03:33:19,705 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2020-10-29 03:33:19,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 03:33:19,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:19,705 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:19,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-29 03:33:19,706 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:19,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:19,706 INFO L82 PathProgramCache]: Analyzing trace with hash -576743126, now seen corresponding path program 46 times [2020-10-29 03:33:19,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:19,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770161432] [2020-10-29 03:33:19,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:19,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:19,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:24,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:24,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 03:33:24,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:24,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 03:33:24,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:24,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-29 03:33:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 03:33:24,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:26,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:26,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:26,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:26,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:26,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:26,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:26,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:26,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:26,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:26,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:26,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:26,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:26,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:26,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770161432] [2020-10-29 03:33:26,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:26,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-29 03:33:26,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270250826] [2020-10-29 03:33:26,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-29 03:33:26,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:26,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-29 03:33:26,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:33:26,562 INFO L87 Difference]: Start difference. First operand 119 states and 124 transitions. Second operand 50 states. [2020-10-29 03:33:26,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:26,945 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2020-10-29 03:33:26,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-29 03:33:26,946 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 110 [2020-10-29 03:33:26,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:26,948 INFO L225 Difference]: With dead ends: 142 [2020-10-29 03:33:26,948 INFO L226 Difference]: Without dead ends: 122 [2020-10-29 03:33:26,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:33:26,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-29 03:33:26,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-29 03:33:26,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-29 03:33:26,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2020-10-29 03:33:26,954 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 110 [2020-10-29 03:33:26,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:26,954 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2020-10-29 03:33:26,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-29 03:33:26,954 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2020-10-29 03:33:26,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 03:33:26,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:26,955 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:26,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-29 03:33:26,955 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:26,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:26,955 INFO L82 PathProgramCache]: Analyzing trace with hash -529662708, now seen corresponding path program 47 times [2020-10-29 03:33:26,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:26,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313302376] [2020-10-29 03:33:26,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:26,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:27,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:32,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:32,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 03:33:32,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:32,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 03:33:32,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:32,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:32,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-29 03:33:32,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:32,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 03:33:32,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:33,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:33,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:33,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:33,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:33,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:33,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:33,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:33,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:33,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:33,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:33,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:33,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:33,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313302376] [2020-10-29 03:33:33,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:33,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-29 03:33:33,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643882998] [2020-10-29 03:33:33,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-29 03:33:33,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:33,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-29 03:33:33,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:33:33,812 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand 51 states. [2020-10-29 03:33:34,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:34,331 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-29 03:33:34,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-29 03:33:34,332 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 112 [2020-10-29 03:33:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:34,334 INFO L225 Difference]: With dead ends: 144 [2020-10-29 03:33:34,334 INFO L226 Difference]: Without dead ends: 124 [2020-10-29 03:33:34,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:33:34,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-29 03:33:34,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2020-10-29 03:33:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-29 03:33:34,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 128 transitions. [2020-10-29 03:33:34,340 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 128 transitions. Word has length 112 [2020-10-29 03:33:34,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:34,340 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 128 transitions. [2020-10-29 03:33:34,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-29 03:33:34,340 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 128 transitions. [2020-10-29 03:33:34,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 03:33:34,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:34,341 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:34,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-29 03:33:34,341 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:34,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:34,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1764946030, now seen corresponding path program 48 times [2020-10-29 03:33:34,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:34,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094459055] [2020-10-29 03:33:34,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:34,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:34,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:39,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:39,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 03:33:39,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:39,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:33:39,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:39,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-29 03:33:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:39,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 03:33:39,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:41,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:41,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:41,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:41,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:41,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:41,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:41,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:41,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:41,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:41,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094459055] [2020-10-29 03:33:41,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:41,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-29 03:33:41,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205211521] [2020-10-29 03:33:41,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-29 03:33:41,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:41,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-29 03:33:41,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:33:41,334 INFO L87 Difference]: Start difference. First operand 123 states and 128 transitions. Second operand 52 states. [2020-10-29 03:33:41,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:41,712 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2020-10-29 03:33:41,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-29 03:33:41,713 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 114 [2020-10-29 03:33:41,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:41,714 INFO L225 Difference]: With dead ends: 146 [2020-10-29 03:33:41,714 INFO L226 Difference]: Without dead ends: 126 [2020-10-29 03:33:41,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:33:41,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-29 03:33:41,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-10-29 03:33:41,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-29 03:33:41,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2020-10-29 03:33:41,721 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 114 [2020-10-29 03:33:41,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:41,721 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2020-10-29 03:33:41,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-29 03:33:41,721 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2020-10-29 03:33:41,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 03:33:41,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:41,722 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:41,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-29 03:33:41,723 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:41,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:41,723 INFO L82 PathProgramCache]: Analyzing trace with hash -729246896, now seen corresponding path program 49 times [2020-10-29 03:33:41,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:41,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091881582] [2020-10-29 03:33:41,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:41,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:41,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:46,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:46,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 03:33:46,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:46,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:33:46,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:46,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-29 03:33:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 03:33:46,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:48,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:48,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:48,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:48,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:48,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:48,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:33:48,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:48,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:48,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:48,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:48,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091881582] [2020-10-29 03:33:48,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:48,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-29 03:33:48,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952610115] [2020-10-29 03:33:48,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-29 03:33:48,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:48,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-29 03:33:48,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:33:48,776 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand 53 states. [2020-10-29 03:33:49,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:49,351 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-29 03:33:49,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-29 03:33:49,352 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 116 [2020-10-29 03:33:49,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:49,354 INFO L225 Difference]: With dead ends: 148 [2020-10-29 03:33:49,354 INFO L226 Difference]: Without dead ends: 128 [2020-10-29 03:33:49,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:33:49,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-29 03:33:49,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2020-10-29 03:33:49,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-29 03:33:49,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 132 transitions. [2020-10-29 03:33:49,359 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 132 transitions. Word has length 116 [2020-10-29 03:33:49,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:49,359 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 132 transitions. [2020-10-29 03:33:49,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-29 03:33:49,360 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 132 transitions. [2020-10-29 03:33:49,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 03:33:49,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:49,360 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:49,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-29 03:33:49,361 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:49,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:49,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1056897614, now seen corresponding path program 50 times [2020-10-29 03:33:49,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:49,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166582780] [2020-10-29 03:33:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:49,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:49,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:54,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:54,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 03:33:54,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:33:54,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 03:33:54,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:54,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:54,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-29 03:33:54,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:33:54,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 03:33:54,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:56,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:33:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:56,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:56,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:33:56,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:33:56,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:33:56,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:33:56,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:33:56,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:33:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:33:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:33:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:33:56,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:33:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:33:56,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166582780] [2020-10-29 03:33:56,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:33:56,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-29 03:33:56,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348723099] [2020-10-29 03:33:56,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-29 03:33:56,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:33:56,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-29 03:33:56,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 03:33:56,481 INFO L87 Difference]: Start difference. First operand 127 states and 132 transitions. Second operand 54 states. [2020-10-29 03:33:57,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:33:57,064 INFO L93 Difference]: Finished difference Result 150 states and 160 transitions. [2020-10-29 03:33:57,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-29 03:33:57,065 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 118 [2020-10-29 03:33:57,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:33:57,066 INFO L225 Difference]: With dead ends: 150 [2020-10-29 03:33:57,066 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 03:33:57,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 03:33:57,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 03:33:57,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2020-10-29 03:33:57,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-29 03:33:57,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 134 transitions. [2020-10-29 03:33:57,073 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 134 transitions. Word has length 118 [2020-10-29 03:33:57,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:33:57,074 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 134 transitions. [2020-10-29 03:33:57,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-29 03:33:57,074 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 134 transitions. [2020-10-29 03:33:57,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 03:33:57,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:33:57,075 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:33:57,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-29 03:33:57,075 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:33:57,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:33:57,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1898342292, now seen corresponding path program 51 times [2020-10-29 03:33:57,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:33:57,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627175811] [2020-10-29 03:33:57,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:33:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:33:57,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:33:57,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:02,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:02,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 03:34:02,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:34:02,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 03:34:02,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:02,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:02,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-29 03:34:02,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:02,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 03:34:02,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:04,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:04,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:04,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:04,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:04,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:04,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:04,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:04,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:04,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:04,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:04,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:04,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:04,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627175811] [2020-10-29 03:34:04,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:04,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-29 03:34:04,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99330051] [2020-10-29 03:34:04,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-29 03:34:04,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:04,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-29 03:34:04,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:34:04,318 INFO L87 Difference]: Start difference. First operand 129 states and 134 transitions. Second operand 55 states. [2020-10-29 03:34:04,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:04,675 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-29 03:34:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-29 03:34:04,676 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 120 [2020-10-29 03:34:04,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:04,678 INFO L225 Difference]: With dead ends: 152 [2020-10-29 03:34:04,678 INFO L226 Difference]: Without dead ends: 132 [2020-10-29 03:34:04,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:34:04,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-29 03:34:04,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-10-29 03:34:04,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-29 03:34:04,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 136 transitions. [2020-10-29 03:34:04,685 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 136 transitions. Word has length 120 [2020-10-29 03:34:04,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:04,685 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 136 transitions. [2020-10-29 03:34:04,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-29 03:34:04,685 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 136 transitions. [2020-10-29 03:34:04,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 03:34:04,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:04,686 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:04,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-29 03:34:04,686 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:04,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:04,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1384457994, now seen corresponding path program 52 times [2020-10-29 03:34:04,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:04,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667695639] [2020-10-29 03:34:04,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:04,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:04,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:09,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:09,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 03:34:09,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:34:09,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 03:34:09,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:09,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:09,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-29 03:34:09,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:09,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 03:34:09,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:11,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:12,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:12,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:12,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:12,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:12,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:12,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:12,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:12,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:12,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:12,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667695639] [2020-10-29 03:34:12,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:12,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-29 03:34:12,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761281445] [2020-10-29 03:34:12,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-29 03:34:12,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:12,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-29 03:34:12,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:34:12,027 INFO L87 Difference]: Start difference. First operand 131 states and 136 transitions. Second operand 56 states. [2020-10-29 03:34:12,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:12,648 INFO L93 Difference]: Finished difference Result 154 states and 164 transitions. [2020-10-29 03:34:12,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-29 03:34:12,649 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 122 [2020-10-29 03:34:12,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:12,650 INFO L225 Difference]: With dead ends: 154 [2020-10-29 03:34:12,650 INFO L226 Difference]: Without dead ends: 134 [2020-10-29 03:34:12,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:34:12,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-29 03:34:12,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2020-10-29 03:34:12,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-29 03:34:12,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 138 transitions. [2020-10-29 03:34:12,657 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 138 transitions. Word has length 122 [2020-10-29 03:34:12,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:12,657 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 138 transitions. [2020-10-29 03:34:12,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-29 03:34:12,657 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 138 transitions. [2020-10-29 03:34:12,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 03:34:12,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:12,658 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:12,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-29 03:34:12,658 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:12,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:12,659 INFO L82 PathProgramCache]: Analyzing trace with hash 645429720, now seen corresponding path program 53 times [2020-10-29 03:34:12,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:12,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378333233] [2020-10-29 03:34:12,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:12,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:12,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:17,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:17,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 03:34:17,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:34:17,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 03:34:17,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:17,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:17,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-29 03:34:17,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:17,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 03:34:17,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:20,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:20,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:20,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:20,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:20,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:34:20,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:20,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:34:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 0 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:34:20,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378333233] [2020-10-29 03:34:20,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:34:20,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-29 03:34:20,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008995706] [2020-10-29 03:34:20,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-29 03:34:20,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:20,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-29 03:34:20,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:34:20,045 INFO L87 Difference]: Start difference. First operand 133 states and 138 transitions. Second operand 57 states. [2020-10-29 03:34:20,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:20,685 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-29 03:34:20,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-29 03:34:20,686 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 124 [2020-10-29 03:34:20,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:20,687 INFO L225 Difference]: With dead ends: 156 [2020-10-29 03:34:20,687 INFO L226 Difference]: Without dead ends: 136 [2020-10-29 03:34:20,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:34:20,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-29 03:34:20,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2020-10-29 03:34:20,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-29 03:34:20,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 140 transitions. [2020-10-29 03:34:20,692 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 140 transitions. Word has length 124 [2020-10-29 03:34:20,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:20,692 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 140 transitions. [2020-10-29 03:34:20,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-29 03:34:20,693 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 140 transitions. [2020-10-29 03:34:20,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 03:34:20,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:20,693 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:20,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-29 03:34:20,693 INFO L429 AbstractCegarLoop]: === Iteration 56 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:20,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:20,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1452370490, now seen corresponding path program 54 times [2020-10-29 03:34:20,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:20,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717378575] [2020-10-29 03:34:20,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:20,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:20,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:25,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:25,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 03:34:25,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:34:25,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:34:25,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:25,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:25,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-10-29 03:34:25,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:34:25,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 03:34:25,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0