/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_init3_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:38:30,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:38:30,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:38:30,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:38:30,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:38:30,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:38:30,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:38:30,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:38:30,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:38:30,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:38:30,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:38:30,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:38:30,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:38:30,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:38:30,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:38:30,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:38:30,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:38:30,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:38:30,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:38:30,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:38:30,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:38:30,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:38:30,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:38:30,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:38:30,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:38:30,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:38:30,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:38:30,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:38:30,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:38:30,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:38:30,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:38:30,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:38:30,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:38:30,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:38:30,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:38:30,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:38:30,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:38:30,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:38:30,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:38:30,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:38:30,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:38:30,794 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 03:38:30,855 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:38:30,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:38:30,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:38:30,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:38:30,860 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:38:30,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:38:30,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:38:30,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:38:30,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:38:30,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:38:30,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:38:30,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:38:30,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:38:30,865 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:38:30,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:38:30,866 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:38:30,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:38:30,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:38:30,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:38:30,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:38:30,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:38:30,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:38:30,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:38:30,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:38:30,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:38:30,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:38:30,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:38:30,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:38:30,869 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:38:30,869 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:38:31,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:38:31,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:38:31,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:38:31,312 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:38:31,313 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:38:31,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init3_ground-1.i [2020-10-29 03:38:31,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70a23c1d0/d6c503e2a844436fa4f4520b914b44ab/FLAGc098631c4 [2020-10-29 03:38:31,992 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:38:31,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_init3_ground-1.i [2020-10-29 03:38:31,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70a23c1d0/d6c503e2a844436fa4f4520b914b44ab/FLAGc098631c4 [2020-10-29 03:38:32,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70a23c1d0/d6c503e2a844436fa4f4520b914b44ab [2020-10-29 03:38:32,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:38:32,374 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:38:32,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:38:32,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:38:32,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:38:32,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:38:32" (1/1) ... [2020-10-29 03:38:32,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a47a54e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:32, skipping insertion in model container [2020-10-29 03:38:32,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:38:32" (1/1) ... [2020-10-29 03:38:32,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:38:32,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:38:32,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:38:32,602 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:38:32,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:38:32,656 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:38:32,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:32 WrapperNode [2020-10-29 03:38:32,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:38:32,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:38:32,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:38:32,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:38:32,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:32" (1/1) ... [2020-10-29 03:38:32,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:32" (1/1) ... [2020-10-29 03:38:32,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:32" (1/1) ... [2020-10-29 03:38:32,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:32" (1/1) ... [2020-10-29 03:38:32,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:32" (1/1) ... [2020-10-29 03:38:32,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:32" (1/1) ... [2020-10-29 03:38:32,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:32" (1/1) ... [2020-10-29 03:38:32,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:38:32,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:38:32,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:38:32,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:38:32,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:32" (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 03:38:32,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:38:32,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:38:32,825 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:38:32,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:38:32,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:38:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:38:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:38:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:38:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:38:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:38:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:38:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:38:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:38:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:38:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:38:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:38:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:38:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:38:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:38:33,150 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:38:33,150 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-29 03:38:33,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:38:33 BoogieIcfgContainer [2020-10-29 03:38:33,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:38:33,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:38:33,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:38:33,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:38:33,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:38:32" (1/3) ... [2020-10-29 03:38:33,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e77266b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:38:33, skipping insertion in model container [2020-10-29 03:38:33,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:32" (2/3) ... [2020-10-29 03:38:33,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e77266b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:38:33, skipping insertion in model container [2020-10-29 03:38:33,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:38:33" (3/3) ... [2020-10-29 03:38:33,162 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init3_ground-1.i [2020-10-29 03:38:33,184 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:38:33,192 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:38:33,222 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:38:33,266 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:38:33,266 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:38:33,267 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:38:33,267 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:38:33,267 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:38:33,267 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:38:33,267 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:38:33,268 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:38:33,294 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-29 03:38:33,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 03:38:33,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:33,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:33,305 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:33,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:33,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1280200698, now seen corresponding path program 1 times [2020-10-29 03:38:33,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:33,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56433173] [2020-10-29 03:38:33,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:33,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:33,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:33,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:33,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 03:38:33,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:38:33,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-29 03:38:34,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:34,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:34,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:38:34,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:34,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:38:34,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:38:34,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:34,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:34,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:34,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:34,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:34,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:38:34,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:34,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:34,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:34,123 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 03:38:34,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56433173] [2020-10-29 03:38:34,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:38:34,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:38:34,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356929505] [2020-10-29 03:38:34,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:38:34,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:34,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:38:34,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:38:34,149 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2020-10-29 03:38:34,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:34,274 INFO L93 Difference]: Finished difference Result 57 states and 81 transitions. [2020-10-29 03:38:34,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:38:34,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-29 03:38:34,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:34,284 INFO L225 Difference]: With dead ends: 57 [2020-10-29 03:38:34,285 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 03:38:34,288 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 03:38:34,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 03:38:34,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-29 03:38:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-29 03:38:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-29 03:38:34,330 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2020-10-29 03:38:34,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:34,330 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-29 03:38:34,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:38:34,331 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-29 03:38:34,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:38:34,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:34,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:34,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:38:34,332 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:34,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:34,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1629215179, now seen corresponding path program 1 times [2020-10-29 03:38:34,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:34,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896657759] [2020-10-29 03:38:34,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:34,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:34,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:34,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:34,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:35,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:35,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:38:35,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:38:35,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1113 [2020-10-29 03:38:35,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:35,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:35,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:38:35,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:38:35,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:38:35,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:35,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:35,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:35,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:35,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:35,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:35,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:38:35,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:35,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:35,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:38:35,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896657759] [2020-10-29 03:38:35,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:35,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:38:35,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380190906] [2020-10-29 03:38:35,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:38:35,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:35,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:38:35,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:38:35,616 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 10 states. [2020-10-29 03:38:35,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:35,933 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-10-29 03:38:35,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:38:35,934 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-10-29 03:38:35,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:35,937 INFO L225 Difference]: With dead ends: 48 [2020-10-29 03:38:35,937 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 03:38:35,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:38:35,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 03:38:35,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2020-10-29 03:38:35,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 03:38:35,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-29 03:38:35,953 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 22 [2020-10-29 03:38:35,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:35,953 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-29 03:38:35,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:38:35,953 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-29 03:38:35,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 03:38:35,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:35,955 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:35,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:38:35,955 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:35,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:35,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1518198123, now seen corresponding path program 2 times [2020-10-29 03:38:35,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:35,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563598164] [2020-10-29 03:38:35,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:35,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:35,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:36,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:36,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:36,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 03:38:36,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:38:36,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-10-29 03:38:36,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:36,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:38:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:38:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:38:36,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:36,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:36,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:36,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:37,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:37,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:37,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:38:37,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:37,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:37,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:37,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:38:37,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563598164] [2020-10-29 03:38:37,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:37,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:38:37,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795941126] [2020-10-29 03:38:37,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:38:37,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:37,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:38:37,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:38:37,025 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 11 states. [2020-10-29 03:38:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:37,393 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-10-29 03:38:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:38:37,393 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2020-10-29 03:38:37,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:37,397 INFO L225 Difference]: With dead ends: 57 [2020-10-29 03:38:37,397 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 03:38:37,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:38:37,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 03:38:37,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 36. [2020-10-29 03:38:37,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 03:38:37,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-29 03:38:37,424 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 23 [2020-10-29 03:38:37,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:37,424 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-29 03:38:37,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:38:37,424 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-29 03:38:37,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 03:38:37,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:37,426 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:37,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:38:37,426 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:37,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:37,427 INFO L82 PathProgramCache]: Analyzing trace with hash -303762677, now seen corresponding path program 3 times [2020-10-29 03:38:37,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:37,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439879415] [2020-10-29 03:38:37,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:37,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:37,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:37,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:37,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:38,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:38,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:38:38,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:38:38,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1129 [2020-10-29 03:38:38,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:38,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:38:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:38:38,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 03:38:38,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:38:38,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:38,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:38,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:38,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:38,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:38,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:38,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:38,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:38,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:38:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:38:38,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439879415] [2020-10-29 03:38:38,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:38,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:38:38,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981882355] [2020-10-29 03:38:38,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:38:38,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:38,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:38:38,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:38:38,807 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 12 states. [2020-10-29 03:38:39,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:39,148 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-10-29 03:38:39,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:38:39,149 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2020-10-29 03:38:39,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:39,150 INFO L225 Difference]: With dead ends: 59 [2020-10-29 03:38:39,150 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 03:38:39,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:38:39,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 03:38:39,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 37. [2020-10-29 03:38:39,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 03:38:39,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2020-10-29 03:38:39,170 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 24 [2020-10-29 03:38:39,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:39,170 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2020-10-29 03:38:39,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:38:39,171 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2020-10-29 03:38:39,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 03:38:39,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:39,172 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:39,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:38:39,173 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:39,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:39,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1310969515, now seen corresponding path program 4 times [2020-10-29 03:38:39,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:39,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736006331] [2020-10-29 03:38:39,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:39,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:39,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:39,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:39,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:40,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:40,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 03:38:40,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:38:40,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1067 [2020-10-29 03:38:40,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:40,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:38:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:38:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:38:40,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:40,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:40,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:40,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:40,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:40,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:40,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:38:40,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:40,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:40,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:40,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:40,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:40,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:38:40,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736006331] [2020-10-29 03:38:40,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:40,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:38:40,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913864113] [2020-10-29 03:38:40,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:38:40,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:40,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:38:40,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:38:40,535 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 13 states. [2020-10-29 03:38:40,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:40,931 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-10-29 03:38:40,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:38:40,933 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-10-29 03:38:40,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:40,935 INFO L225 Difference]: With dead ends: 61 [2020-10-29 03:38:40,935 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 03:38:40,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:38:40,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 03:38:40,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 38. [2020-10-29 03:38:40,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 03:38:40,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-10-29 03:38:40,945 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 25 [2020-10-29 03:38:40,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:40,946 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-10-29 03:38:40,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:38:40,946 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-10-29 03:38:40,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 03:38:40,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:40,947 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:40,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:38:40,947 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:40,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:40,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1825356875, now seen corresponding path program 5 times [2020-10-29 03:38:40,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:40,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838338229] [2020-10-29 03:38:40,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:40,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:40,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:40,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:41,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:42,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:42,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:38:42,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:38:42,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1408 [2020-10-29 03:38:42,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:42,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:42,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:38:42,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:38:42,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:38:42,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:38:42,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:42,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:42,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:42,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:42,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:42,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:38:42,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:42,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:42,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:42,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:42,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:42,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:38:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:38:42,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838338229] [2020-10-29 03:38:42,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:42,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:38:42,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45583676] [2020-10-29 03:38:42,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:38:42,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:42,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:38:42,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:38:42,645 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 14 states. [2020-10-29 03:38:43,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:43,044 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2020-10-29 03:38:43,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:38:43,045 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2020-10-29 03:38:43,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:43,046 INFO L225 Difference]: With dead ends: 63 [2020-10-29 03:38:43,046 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 03:38:43,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:38:43,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 03:38:43,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 39. [2020-10-29 03:38:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:38:43,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-10-29 03:38:43,055 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 26 [2020-10-29 03:38:43,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:43,055 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-29 03:38:43,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:38:43,055 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-10-29 03:38:43,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 03:38:43,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:43,056 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:43,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:38:43,057 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:43,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:43,057 INFO L82 PathProgramCache]: Analyzing trace with hash 267227157, now seen corresponding path program 6 times [2020-10-29 03:38:43,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:43,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647842664] [2020-10-29 03:38:43,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:43,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:43,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:43,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:43,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:44,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:44,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 03:38:44,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:38:44,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1795 [2020-10-29 03:38:44,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:44,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:38:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:38:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:38:44,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:45,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:45,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:45,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:45,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:45,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:45,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:38:45,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:45,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:45,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:45,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:45,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:45,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:38:45,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647842664] [2020-10-29 03:38:45,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:45,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:38:45,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250863776] [2020-10-29 03:38:45,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:38:45,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:45,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:38:45,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:38:45,216 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 15 states. [2020-10-29 03:38:45,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:45,613 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2020-10-29 03:38:45,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:38:45,613 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2020-10-29 03:38:45,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:45,618 INFO L225 Difference]: With dead ends: 65 [2020-10-29 03:38:45,618 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 03:38:45,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:38:45,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 03:38:45,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 40. [2020-10-29 03:38:45,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 03:38:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2020-10-29 03:38:45,636 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 27 [2020-10-29 03:38:45,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:45,636 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-10-29 03:38:45,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:38:45,637 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2020-10-29 03:38:45,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:38:45,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:45,638 INFO L422 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:45,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:38:45,639 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:45,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:45,639 INFO L82 PathProgramCache]: Analyzing trace with hash -790153845, now seen corresponding path program 7 times [2020-10-29 03:38:45,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:45,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300570697] [2020-10-29 03:38:45,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:45,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:45,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:45,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:46,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:46,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:46,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:38:46,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:38:46,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1302 [2020-10-29 03:38:46,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:46,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:46,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:38:46,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:38:46,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:38:46,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:47,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:47,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:47,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:47,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:47,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:47,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:38:47,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:47,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:47,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:47,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:47,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:38:47,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300570697] [2020-10-29 03:38:47,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:47,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:38:47,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476157799] [2020-10-29 03:38:47,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:38:47,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:47,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:38:47,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:38:47,319 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 16 states. [2020-10-29 03:38:47,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:47,795 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2020-10-29 03:38:47,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:38:47,796 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 28 [2020-10-29 03:38:47,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:47,797 INFO L225 Difference]: With dead ends: 67 [2020-10-29 03:38:47,797 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 03:38:47,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:38:47,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 03:38:47,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 41. [2020-10-29 03:38:47,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 03:38:47,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2020-10-29 03:38:47,821 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 28 [2020-10-29 03:38:47,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:47,821 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2020-10-29 03:38:47,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:38:47,821 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2020-10-29 03:38:47,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 03:38:47,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:47,826 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:47,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:38:47,827 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:47,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:47,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1319070373, now seen corresponding path program 1 times [2020-10-29 03:38:47,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:47,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632384860] [2020-10-29 03:38:47,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:47,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:47,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:47,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:47,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:48,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:49,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:49,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:38:49,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:38:49,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1187 [2020-10-29 03:38:49,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:49,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:49,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:38:49,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:49,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:38:49,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:49,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:49,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:49,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:49,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:49,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:49,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:49,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:49,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:49,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:49,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:49,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:49,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:49,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 03:38:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:49,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:49,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:49,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:38:49,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:49,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:38:49,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:49,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:49,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:38:49,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:38:49,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:38:49,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:49,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632384860] [2020-10-29 03:38:49,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:49,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:38:49,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762070453] [2020-10-29 03:38:49,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:38:49,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:49,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:38:49,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:38:49,287 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 11 states. [2020-10-29 03:38:49,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:49,754 INFO L93 Difference]: Finished difference Result 73 states and 95 transitions. [2020-10-29 03:38:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:38:49,755 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-29 03:38:49,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:49,756 INFO L225 Difference]: With dead ends: 73 [2020-10-29 03:38:49,756 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 03:38:49,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:38:49,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 03:38:49,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-29 03:38:49,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:38:49,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2020-10-29 03:38:49,767 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 30 [2020-10-29 03:38:49,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:49,767 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2020-10-29 03:38:49,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:38:49,767 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2020-10-29 03:38:49,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 03:38:49,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:49,768 INFO L422 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:49,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:38:49,769 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:49,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:49,769 INFO L82 PathProgramCache]: Analyzing trace with hash 790773461, now seen corresponding path program 8 times [2020-10-29 03:38:49,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:49,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588777860] [2020-10-29 03:38:49,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:49,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:49,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:49,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:50,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:51,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:51,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 03:38:51,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:38:51,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1737 [2020-10-29 03:38:51,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:51,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:51,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:38:51,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:38:51,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:38:51,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:51,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:51,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:51,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:51,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:51,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:51,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:51,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:51,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:51,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:51,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:51,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:51,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:38:51,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588777860] [2020-10-29 03:38:51,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:51,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:38:51,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944390441] [2020-10-29 03:38:51,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:38:51,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:51,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:38:51,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:38:51,950 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand 17 states. [2020-10-29 03:38:52,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:52,337 INFO L93 Difference]: Finished difference Result 87 states and 110 transitions. [2020-10-29 03:38:52,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:38:52,338 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 29 [2020-10-29 03:38:52,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:52,339 INFO L225 Difference]: With dead ends: 87 [2020-10-29 03:38:52,339 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 03:38:52,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:38:52,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 03:38:52,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 57. [2020-10-29 03:38:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:38:52,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2020-10-29 03:38:52,359 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 29 [2020-10-29 03:38:52,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:52,360 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2020-10-29 03:38:52,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:38:52,360 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2020-10-29 03:38:52,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 03:38:52,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:52,364 INFO L422 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:52,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:38:52,367 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:52,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:52,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1740087605, now seen corresponding path program 9 times [2020-10-29 03:38:52,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:52,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641227100] [2020-10-29 03:38:52,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:52,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:52,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:52,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:52,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:54,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:54,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:38:54,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:38:54,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1630 [2020-10-29 03:38:54,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:54,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:38:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:38:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 03:38:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:54,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:54,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:54,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:54,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:54,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:54,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:54,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:54,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:54,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:54,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:54,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:38:54,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641227100] [2020-10-29 03:38:54,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:54,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:38:54,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981477161] [2020-10-29 03:38:54,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:38:54,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:54,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:38:54,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:38:54,514 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand 18 states. [2020-10-29 03:38:54,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:54,941 INFO L93 Difference]: Finished difference Result 90 states and 115 transitions. [2020-10-29 03:38:54,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:38:54,942 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 30 [2020-10-29 03:38:54,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:54,943 INFO L225 Difference]: With dead ends: 90 [2020-10-29 03:38:54,943 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 03:38:54,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:38:54,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 03:38:54,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 59. [2020-10-29 03:38:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 03:38:54,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2020-10-29 03:38:54,955 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 30 [2020-10-29 03:38:54,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:54,955 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2020-10-29 03:38:54,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:38:54,956 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2020-10-29 03:38:54,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 03:38:54,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:54,957 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:54,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:38:54,957 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:54,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:54,958 INFO L82 PathProgramCache]: Analyzing trace with hash 2057748078, now seen corresponding path program 2 times [2020-10-29 03:38:54,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:54,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693014485] [2020-10-29 03:38:54,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:54,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:54,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:54,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:55,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:55,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:55,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:55,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:57,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:57,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:38:57,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:38:57,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2370 [2020-10-29 03:38:57,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:57,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:38:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:38:57,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:57,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:57,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:57,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:57,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:57,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:57,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:57,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:57,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:57,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:57,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:57,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:57,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:57,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 03:38:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:57,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:57,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:57,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:38:57,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:57,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:38:57,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:57,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:57,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:38:57,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:38:57,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:38:57,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:57,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:57,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693014485] [2020-10-29 03:38:57,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:57,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:38:57,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955157858] [2020-10-29 03:38:57,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:38:57,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:57,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:38:57,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:38:57,558 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand 12 states. [2020-10-29 03:38:57,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:57,935 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2020-10-29 03:38:57,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:38:57,936 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-10-29 03:38:57,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:57,937 INFO L225 Difference]: With dead ends: 75 [2020-10-29 03:38:57,937 INFO L226 Difference]: Without dead ends: 51 [2020-10-29 03:38:57,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:38:57,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-29 03:38:57,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32. [2020-10-29 03:38:57,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 03:38:57,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-10-29 03:38:57,944 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 31 [2020-10-29 03:38:57,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:57,944 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-10-29 03:38:57,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:38:57,944 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-10-29 03:38:57,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 03:38:57,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:57,945 INFO L422 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:57,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:38:57,945 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:57,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:57,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1407597973, now seen corresponding path program 10 times [2020-10-29 03:38:57,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:57,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079469957] [2020-10-29 03:38:57,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:57,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:57,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:57,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:58,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:59,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:59,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 03:38:59,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:38:59,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1707 [2020-10-29 03:38:59,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:59,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:38:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:38:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:38:59,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:00,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:00,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:00,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:00,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:00,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:00,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:39:00,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:00,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:00,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:39:00,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079469957] [2020-10-29 03:39:00,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:00,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:39:00,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148218558] [2020-10-29 03:39:00,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:39:00,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:00,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:39:00,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:39:00,229 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 19 states. [2020-10-29 03:39:00,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:00,632 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2020-10-29 03:39:00,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:39:00,633 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 31 [2020-10-29 03:39:00,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:00,634 INFO L225 Difference]: With dead ends: 54 [2020-10-29 03:39:00,634 INFO L226 Difference]: Without dead ends: 45 [2020-10-29 03:39:00,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:39:00,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-29 03:39:00,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 33. [2020-10-29 03:39:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:39:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-29 03:39:00,642 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 31 [2020-10-29 03:39:00,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:00,643 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-29 03:39:00,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:39:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-29 03:39:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:39:00,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:00,644 INFO L422 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:00,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:39:00,644 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:00,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:00,644 INFO L82 PathProgramCache]: Analyzing trace with hash 201603083, now seen corresponding path program 11 times [2020-10-29 03:39:00,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:00,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019416738] [2020-10-29 03:39:00,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:00,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:00,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:00,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:01,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:02,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:02,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:39:02,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:39:02,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1472 [2020-10-29 03:39:02,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:02,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:39:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:39:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 03:39:02,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:02,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:02,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:02,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:02,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:02,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:02,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:02,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:02,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:02,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:02,743 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:39:02,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019416738] [2020-10-29 03:39:02,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:02,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:39:02,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084867417] [2020-10-29 03:39:02,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:39:02,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:02,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:39:02,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:39:02,745 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 20 states. [2020-10-29 03:39:03,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:03,163 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2020-10-29 03:39:03,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:39:03,164 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 32 [2020-10-29 03:39:03,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:03,165 INFO L225 Difference]: With dead ends: 56 [2020-10-29 03:39:03,165 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 03:39:03,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:39:03,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 03:39:03,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34. [2020-10-29 03:39:03,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-29 03:39:03,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-29 03:39:03,175 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 32 [2020-10-29 03:39:03,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:03,176 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-29 03:39:03,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:39:03,176 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-29 03:39:03,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 03:39:03,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:03,178 INFO L422 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:03,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:39:03,178 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:03,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:03,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1470467157, now seen corresponding path program 12 times [2020-10-29 03:39:03,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:03,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129553924] [2020-10-29 03:39:03,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:03,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:03,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:03,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:03,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:05,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:05,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:39:05,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:39:05,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1900 [2020-10-29 03:39:05,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:05,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:39:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:39:05,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:39:05,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:05,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:05,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:05,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:05,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:05,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:05,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:05,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:05,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:05,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:05,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:05,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:05,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:05,793 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:39:05,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129553924] [2020-10-29 03:39:05,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:05,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:39:05,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099775240] [2020-10-29 03:39:05,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:39:05,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:05,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:39:05,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:39:05,796 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 21 states. [2020-10-29 03:39:06,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:06,200 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2020-10-29 03:39:06,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:39:06,201 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 33 [2020-10-29 03:39:06,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:06,201 INFO L225 Difference]: With dead ends: 58 [2020-10-29 03:39:06,202 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 03:39:06,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:39:06,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 03:39:06,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2020-10-29 03:39:06,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 03:39:06,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-10-29 03:39:06,215 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 33 [2020-10-29 03:39:06,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:06,216 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-10-29 03:39:06,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:39:06,216 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-10-29 03:39:06,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:39:06,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:06,216 INFO L422 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:06,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:39:06,217 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:06,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:06,217 INFO L82 PathProgramCache]: Analyzing trace with hash -2144419509, now seen corresponding path program 13 times [2020-10-29 03:39:06,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:06,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527049599] [2020-10-29 03:39:06,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:06,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:06,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:06,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:06,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:07,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:07,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:39:07,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:39:07,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1584 [2020-10-29 03:39:07,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:07,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:07,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:39:07,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:39:07,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:39:07,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:08,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:08,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:08,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:08,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:08,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:08,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:08,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:08,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:08,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:08,648 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:39:08,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527049599] [2020-10-29 03:39:08,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:08,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:39:08,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124316526] [2020-10-29 03:39:08,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:39:08,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:08,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:39:08,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:39:08,650 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 22 states. [2020-10-29 03:39:09,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:09,127 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions. [2020-10-29 03:39:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:39:09,129 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 34 [2020-10-29 03:39:09,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:09,129 INFO L225 Difference]: With dead ends: 60 [2020-10-29 03:39:09,130 INFO L226 Difference]: Without dead ends: 51 [2020-10-29 03:39:09,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=208, Invalid=494, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:39:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-29 03:39:09,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 36. [2020-10-29 03:39:09,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 03:39:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-10-29 03:39:09,138 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 34 [2020-10-29 03:39:09,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:09,138 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-10-29 03:39:09,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:39:09,138 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-10-29 03:39:09,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 03:39:09,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:09,139 INFO L422 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:09,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:39:09,139 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:09,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:09,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1758210837, now seen corresponding path program 14 times [2020-10-29 03:39:09,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:09,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071039530] [2020-10-29 03:39:09,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:09,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:09,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:09,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:09,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:10,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:10,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 03:39:10,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:39:10,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1694 [2020-10-29 03:39:10,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:10,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:10,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:39:10,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:39:10,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:39:10,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:11,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:11,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:11,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:11,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:11,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:11,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:11,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:11,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:11,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:11,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:11,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:11,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:39:11,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071039530] [2020-10-29 03:39:11,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:11,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:39:11,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623432383] [2020-10-29 03:39:11,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:39:11,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:11,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:39:11,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:39:11,724 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 23 states. [2020-10-29 03:39:12,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:12,210 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-10-29 03:39:12,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:39:12,210 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-29 03:39:12,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:12,211 INFO L225 Difference]: With dead ends: 62 [2020-10-29 03:39:12,211 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 03:39:12,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=228, Invalid=528, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:39:12,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 03:39:12,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 37. [2020-10-29 03:39:12,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 03:39:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-10-29 03:39:12,219 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 35 [2020-10-29 03:39:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:12,219 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-10-29 03:39:12,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:39:12,219 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-10-29 03:39:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:39:12,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:12,220 INFO L422 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:12,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:39:12,221 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:12,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:12,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1814300021, now seen corresponding path program 15 times [2020-10-29 03:39:12,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:12,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891573588] [2020-10-29 03:39:12,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:12,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:12,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:12,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:12,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:14,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:14,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:39:14,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:39:14,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2000 [2020-10-29 03:39:14,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:14,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:39:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:39:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:39:14,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:15,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:15,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:15,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:15,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:15,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:15,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:15,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:15,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:15,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:15,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:15,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:39:15,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891573588] [2020-10-29 03:39:15,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:15,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:39:15,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487145525] [2020-10-29 03:39:15,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:39:15,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:15,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:39:15,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:39:15,183 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 24 states. [2020-10-29 03:39:15,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:15,603 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2020-10-29 03:39:15,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:39:15,604 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 36 [2020-10-29 03:39:15,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:15,605 INFO L225 Difference]: With dead ends: 64 [2020-10-29 03:39:15,605 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 03:39:15,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=249, Invalid=563, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:39:15,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 03:39:15,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 38. [2020-10-29 03:39:15,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 03:39:15,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-29 03:39:15,613 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 36 [2020-10-29 03:39:15,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:15,613 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-29 03:39:15,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:39:15,613 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-29 03:39:15,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 03:39:15,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:15,614 INFO L422 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:15,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:39:15,614 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:15,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:15,615 INFO L82 PathProgramCache]: Analyzing trace with hash -892986923, now seen corresponding path program 16 times [2020-10-29 03:39:15,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:15,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703267181] [2020-10-29 03:39:15,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:15,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:15,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:15,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:16,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:17,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:17,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 03:39:17,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:39:17,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1729 [2020-10-29 03:39:17,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:17,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:39:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:39:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:39:17,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:18,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:18,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:18,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:18,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:18,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:18,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:18,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:18,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:18,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 137 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:39:18,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703267181] [2020-10-29 03:39:18,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:18,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:39:18,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719100162] [2020-10-29 03:39:18,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:39:18,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:18,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:39:18,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:39:18,421 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 25 states. [2020-10-29 03:39:18,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:18,833 INFO L93 Difference]: Finished difference Result 66 states and 84 transitions. [2020-10-29 03:39:18,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:39:18,834 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 37 [2020-10-29 03:39:18,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:18,835 INFO L225 Difference]: With dead ends: 66 [2020-10-29 03:39:18,835 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 03:39:18,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=271, Invalid=599, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:39:18,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 03:39:18,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2020-10-29 03:39:18,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:39:18,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-29 03:39:18,848 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 37 [2020-10-29 03:39:18,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:18,848 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-29 03:39:18,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:39:18,848 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-29 03:39:18,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:39:18,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:18,849 INFO L422 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:18,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:39:18,850 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:18,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:18,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1897915339, now seen corresponding path program 17 times [2020-10-29 03:39:18,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:18,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913844969] [2020-10-29 03:39:18,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:18,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:18,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:18,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:19,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:20,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:20,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:39:20,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:39:20,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2129 [2020-10-29 03:39:20,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:20,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:20,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:39:20,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:39:20,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:39:20,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:22,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:22,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:22,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:22,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:22,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:22,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:39:22,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:22,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:22,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:22,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:22,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:22,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:39:22,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913844969] [2020-10-29 03:39:22,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:22,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:39:22,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690893704] [2020-10-29 03:39:22,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:39:22,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:22,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:39:22,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=431, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:39:22,275 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 26 states. [2020-10-29 03:39:22,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:22,759 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2020-10-29 03:39:22,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:39:22,760 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 38 [2020-10-29 03:39:22,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:22,761 INFO L225 Difference]: With dead ends: 68 [2020-10-29 03:39:22,761 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 03:39:22,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=294, Invalid=636, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:39:22,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 03:39:22,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 40. [2020-10-29 03:39:22,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 03:39:22,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-10-29 03:39:22,776 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 38 [2020-10-29 03:39:22,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:22,776 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-10-29 03:39:22,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:39:22,776 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-10-29 03:39:22,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 03:39:22,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:22,777 INFO L422 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:22,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:39:22,778 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:22,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:22,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1778427755, now seen corresponding path program 18 times [2020-10-29 03:39:22,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:22,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238039257] [2020-10-29 03:39:22,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:22,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:22,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:22,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:23,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:24,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:24,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 03:39:24,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:39:24,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1924 [2020-10-29 03:39:24,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:24,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:24,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:39:24,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:39:24,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:39:24,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:25,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:25,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:25,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:25,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:25,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:25,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:39:25,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:25,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:25,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:25,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:25,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:25,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:39:25,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238039257] [2020-10-29 03:39:25,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:25,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:39:25,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661935811] [2020-10-29 03:39:25,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:39:25,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:25,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:39:25,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:39:25,453 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 27 states. [2020-10-29 03:39:26,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:26,009 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2020-10-29 03:39:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:39:26,010 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 39 [2020-10-29 03:39:26,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:26,011 INFO L225 Difference]: With dead ends: 70 [2020-10-29 03:39:26,011 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 03:39:26,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=318, Invalid=674, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:39:26,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 03:39:26,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 41. [2020-10-29 03:39:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 03:39:26,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-29 03:39:26,020 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 39 [2020-10-29 03:39:26,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:26,020 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-29 03:39:26,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:39:26,020 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-29 03:39:26,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:39:26,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:26,021 INFO L422 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:26,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:39:26,021 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:26,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:26,021 INFO L82 PathProgramCache]: Analyzing trace with hash 219053323, now seen corresponding path program 19 times [2020-10-29 03:39:26,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:26,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590396531] [2020-10-29 03:39:26,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:26,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:26,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:26,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:26,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:28,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:28,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:39:28,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:39:28,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2275 [2020-10-29 03:39:28,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:28,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:28,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:39:28,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:39:28,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:39:28,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:29,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:29,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:29,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:29,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:29,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:29,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:29,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:29,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:29,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 191 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:39:29,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590396531] [2020-10-29 03:39:29,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:29,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:39:29,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272890598] [2020-10-29 03:39:29,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:39:29,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:29,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:39:29,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=494, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:39:29,866 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 28 states. [2020-10-29 03:39:30,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:30,464 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2020-10-29 03:39:30,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:39:30,467 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 40 [2020-10-29 03:39:30,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:30,468 INFO L225 Difference]: With dead ends: 72 [2020-10-29 03:39:30,468 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 03:39:30,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=343, Invalid=713, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:39:30,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 03:39:30,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 42. [2020-10-29 03:39:30,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 03:39:30,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-10-29 03:39:30,476 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 40 [2020-10-29 03:39:30,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:30,476 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-10-29 03:39:30,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:39:30,476 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-10-29 03:39:30,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 03:39:30,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:30,477 INFO L422 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:30,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:39:30,477 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:30,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:30,477 INFO L82 PathProgramCache]: Analyzing trace with hash 2011424597, now seen corresponding path program 20 times [2020-10-29 03:39:30,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:30,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144693318] [2020-10-29 03:39:30,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:30,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:30,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:30,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:31,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:33,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:33,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 03:39:33,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:39:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2660 [2020-10-29 03:39:33,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:33,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:39:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:39:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:39:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:34,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:34,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:34,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:34,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:34,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:34,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:39:34,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:34,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:34,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:34,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:34,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:34,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:39:34,770 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:39:34,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144693318] [2020-10-29 03:39:34,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:34,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:39:34,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967985361] [2020-10-29 03:39:34,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:39:34,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:34,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:39:34,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=527, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:39:34,772 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 29 states. [2020-10-29 03:39:35,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:35,381 INFO L93 Difference]: Finished difference Result 74 states and 96 transitions. [2020-10-29 03:39:35,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:39:35,382 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 41 [2020-10-29 03:39:35,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:35,383 INFO L225 Difference]: With dead ends: 74 [2020-10-29 03:39:35,383 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 03:39:35,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=369, Invalid=753, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:39:35,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 03:39:35,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 43. [2020-10-29 03:39:35,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 03:39:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-10-29 03:39:35,392 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 41 [2020-10-29 03:39:35,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:35,392 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-10-29 03:39:35,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:39:35,392 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-10-29 03:39:35,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 03:39:35,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:35,393 INFO L422 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:35,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:39:35,393 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:35,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:35,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1740359243, now seen corresponding path program 21 times [2020-10-29 03:39:35,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:35,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826119291] [2020-10-29 03:39:35,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:35,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:35,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:35,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:36,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:37,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:37,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:39:37,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:39:37,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2564 [2020-10-29 03:39:37,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:37,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:37,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:39:37,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 03:39:37,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:39:37,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:39,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:39,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:39,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:39,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:39,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:39,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:39,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:39,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:39,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:39:39,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826119291] [2020-10-29 03:39:39,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:39,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:39:39,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845963425] [2020-10-29 03:39:39,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:39:39,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:39,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:39:39,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=561, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:39:39,619 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 30 states. [2020-10-29 03:39:40,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:40,292 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2020-10-29 03:39:40,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:39:40,293 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 42 [2020-10-29 03:39:40,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:40,294 INFO L225 Difference]: With dead ends: 76 [2020-10-29 03:39:40,294 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 03:39:40,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=396, Invalid=794, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:39:40,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 03:39:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 44. [2020-10-29 03:39:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 03:39:40,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-10-29 03:39:40,305 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 42 [2020-10-29 03:39:40,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:40,305 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-10-29 03:39:40,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:39:40,306 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-10-29 03:39:40,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 03:39:40,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:40,306 INFO L422 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:40,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:39:40,306 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:40,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:40,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1927267861, now seen corresponding path program 22 times [2020-10-29 03:39:40,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:40,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681175507] [2020-10-29 03:39:40,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:40,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:40,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:40,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:40,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:42,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:42,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 03:39:42,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:39:42,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2651 [2020-10-29 03:39:42,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:42,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:42,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:39:42,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 03:39:42,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:39:42,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:43,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:43,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:43,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:43,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:43,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:39:43,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:43,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:43,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:39:43,577 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:39:43,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681175507] [2020-10-29 03:39:43,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:43,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:39:43,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102039025] [2020-10-29 03:39:43,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:39:43,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:43,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:39:43,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:39:43,581 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 26 states. [2020-10-29 03:39:43,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:43,966 INFO L93 Difference]: Finished difference Result 125 states and 173 transitions. [2020-10-29 03:39:43,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:39:43,966 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 43 [2020-10-29 03:39:43,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:43,967 INFO L225 Difference]: With dead ends: 125 [2020-10-29 03:39:43,967 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 03:39:43,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:39:43,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 03:39:44,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-10-29 03:39:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 03:39:44,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2020-10-29 03:39:44,043 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 43 [2020-10-29 03:39:44,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:44,043 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2020-10-29 03:39:44,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:39:44,043 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2020-10-29 03:39:44,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 03:39:44,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:44,050 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:44,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:39:44,050 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:44,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:44,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1632168533, now seen corresponding path program 23 times [2020-10-29 03:39:44,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:44,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690113067] [2020-10-29 03:39:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:44,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:44,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:44,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:49,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:49,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 03:39:49,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:39:49,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:39:49,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:49,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:49,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:39:49,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 03:39:49,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:39:49,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:49,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:49,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:49,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:49,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:49,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:49,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:39:49,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:49,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:49,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:49,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:49,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:39:49,774 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2020-10-29 03:39:49,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690113067] [2020-10-29 03:39:49,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:49,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:39:49,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98835343] [2020-10-29 03:39:49,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:39:49,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:49,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:39:49,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:39:49,780 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 27 states. [2020-10-29 03:39:50,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:50,203 INFO L93 Difference]: Finished difference Result 151 states and 157 transitions. [2020-10-29 03:39:50,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:39:50,204 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 88 [2020-10-29 03:39:50,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:50,204 INFO L225 Difference]: With dead ends: 151 [2020-10-29 03:39:50,205 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:39:50,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:39:50,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:39:50,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-29 03:39:50,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-29 03:39:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2020-10-29 03:39:50,284 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 88 [2020-10-29 03:39:50,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:50,285 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2020-10-29 03:39:50,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:39:50,285 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2020-10-29 03:39:50,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 03:39:50,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:50,286 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:50,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:39:50,286 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:50,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:50,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1565293706, now seen corresponding path program 24 times [2020-10-29 03:39:50,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:50,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681853868] [2020-10-29 03:39:50,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:50,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:50,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:50,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:55,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:55,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 03:39:55,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:39:55,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:39:55,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:55,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:55,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:39:55,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-29 03:39:55,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:39:55,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:55,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:55,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:55,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:55,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:55,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:55,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:55,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:55,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:55,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:55,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:55,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:55,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:55,864 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2020-10-29 03:39:55,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681853868] [2020-10-29 03:39:55,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:55,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:39:55,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790926603] [2020-10-29 03:39:55,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:39:55,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:55,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:39:55,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:39:55,867 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 28 states. [2020-10-29 03:39:56,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:56,182 INFO L93 Difference]: Finished difference Result 156 states and 162 transitions. [2020-10-29 03:39:56,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:39:56,183 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 91 [2020-10-29 03:39:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:56,184 INFO L225 Difference]: With dead ends: 156 [2020-10-29 03:39:56,184 INFO L226 Difference]: Without dead ends: 95 [2020-10-29 03:39:56,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:39:56,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-29 03:39:56,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-29 03:39:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 03:39:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2020-10-29 03:39:56,272 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 91 [2020-10-29 03:39:56,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:56,273 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2020-10-29 03:39:56,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:39:56,273 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2020-10-29 03:39:56,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 03:39:56,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:56,274 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:56,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:39:56,274 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:56,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:56,275 INFO L82 PathProgramCache]: Analyzing trace with hash -638876341, now seen corresponding path program 25 times [2020-10-29 03:39:56,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:56,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088110115] [2020-10-29 03:39:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:56,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:56,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:57,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:01,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:01,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 03:40:01,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:40:01,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:40:01,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:01,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:01,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:40:01,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:40:01,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:40:01,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:01,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:01,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:01,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:01,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:01,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:01,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:40:01,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:01,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:01,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:01,892 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2020-10-29 03:40:01,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088110115] [2020-10-29 03:40:01,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:01,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:40:01,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469887437] [2020-10-29 03:40:01,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:40:01,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:01,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:40:01,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:40:01,894 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 29 states. [2020-10-29 03:40:02,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:02,212 INFO L93 Difference]: Finished difference Result 161 states and 167 transitions. [2020-10-29 03:40:02,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:40:02,212 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 94 [2020-10-29 03:40:02,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:02,213 INFO L225 Difference]: With dead ends: 161 [2020-10-29 03:40:02,213 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 03:40:02,214 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 03:40:02,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 03:40:02,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-29 03:40:02,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-29 03:40:02,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2020-10-29 03:40:02,297 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 94 [2020-10-29 03:40:02,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:02,297 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2020-10-29 03:40:02,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:40:02,298 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2020-10-29 03:40:02,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 03:40:02,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:02,299 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:02,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:40:02,299 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:02,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:02,299 INFO L82 PathProgramCache]: Analyzing trace with hash 12914518, now seen corresponding path program 26 times [2020-10-29 03:40:02,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:02,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393061414] [2020-10-29 03:40:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:02,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:02,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:03,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:07,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:07,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 03:40:07,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:40:07,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:40:07,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:07,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:40:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 03:40:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:40:07,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:07,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:07,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:07,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:07,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:07,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:07,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:40:07,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:07,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:07,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:07,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:07,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:07,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:40:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2020-10-29 03:40:07,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393061414] [2020-10-29 03:40:07,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:07,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:40:07,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723477071] [2020-10-29 03:40:07,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:40:07,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:07,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:40:07,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:40:07,954 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand 30 states. [2020-10-29 03:40:08,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:08,366 INFO L93 Difference]: Finished difference Result 166 states and 172 transitions. [2020-10-29 03:40:08,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:40:08,366 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 97 [2020-10-29 03:40:08,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:08,367 INFO L225 Difference]: With dead ends: 166 [2020-10-29 03:40:08,368 INFO L226 Difference]: Without dead ends: 101 [2020-10-29 03:40:08,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:40:08,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-29 03:40:08,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-10-29 03:40:08,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 03:40:08,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2020-10-29 03:40:08,440 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 97 [2020-10-29 03:40:08,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:08,440 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2020-10-29 03:40:08,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:40:08,440 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2020-10-29 03:40:08,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 03:40:08,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:08,441 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:08,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:40:08,441 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:08,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:08,442 INFO L82 PathProgramCache]: Analyzing trace with hash 436976875, now seen corresponding path program 27 times [2020-10-29 03:40:08,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:08,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752301935] [2020-10-29 03:40:08,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:08,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:08,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:09,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:13,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:13,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 03:40:13,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:40:13,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:40:13,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:13,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:13,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:40:13,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:40:13,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:40:13,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:14,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:14,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:14,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:14,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:14,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:14,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:14,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:14,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:14,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:14,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2020-10-29 03:40:14,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752301935] [2020-10-29 03:40:14,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:14,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:40:14,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414488385] [2020-10-29 03:40:14,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:40:14,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:14,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:40:14,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:40:14,140 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 31 states. [2020-10-29 03:40:14,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:14,601 INFO L93 Difference]: Finished difference Result 171 states and 177 transitions. [2020-10-29 03:40:14,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:40:14,601 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 100 [2020-10-29 03:40:14,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:14,602 INFO L225 Difference]: With dead ends: 171 [2020-10-29 03:40:14,603 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 03:40:14,604 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 03:40:14,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 03:40:14,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-29 03:40:14,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-29 03:40:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2020-10-29 03:40:14,674 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 100 [2020-10-29 03:40:14,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:14,675 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2020-10-29 03:40:14,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:40:14,675 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2020-10-29 03:40:14,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 03:40:14,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:14,676 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:14,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:40:14,676 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:14,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:14,677 INFO L82 PathProgramCache]: Analyzing trace with hash -644345034, now seen corresponding path program 28 times [2020-10-29 03:40:14,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:14,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756605369] [2020-10-29 03:40:14,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:14,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:14,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:15,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:19,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:19,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 03:40:19,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:40:19,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:40:19,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:19,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:40:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 03:40:19,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:40:19,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:20,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:20,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:20,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:20,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:20,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:20,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:20,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:20,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:20,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:20,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:20,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:20,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:40:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2020-10-29 03:40:20,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756605369] [2020-10-29 03:40:20,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:20,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:40:20,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041533936] [2020-10-29 03:40:20,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:40:20,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:20,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:40:20,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:40:20,435 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand 32 states. [2020-10-29 03:40:20,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:20,856 INFO L93 Difference]: Finished difference Result 176 states and 182 transitions. [2020-10-29 03:40:20,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:40:20,857 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 103 [2020-10-29 03:40:20,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:20,858 INFO L225 Difference]: With dead ends: 176 [2020-10-29 03:40:20,858 INFO L226 Difference]: Without dead ends: 107 [2020-10-29 03:40:20,859 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 03:40:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-29 03:40:20,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-29 03:40:20,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 03:40:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2020-10-29 03:40:20,916 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 103 [2020-10-29 03:40:20,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:20,916 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2020-10-29 03:40:20,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:40:20,916 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2020-10-29 03:40:20,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 03:40:20,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:20,917 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:20,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:40:20,917 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:20,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:20,918 INFO L82 PathProgramCache]: Analyzing trace with hash 338017419, now seen corresponding path program 29 times [2020-10-29 03:40:20,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:20,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494151541] [2020-10-29 03:40:20,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:20,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:21,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:21,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:25,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:25,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 03:40:25,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:40:25,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:40:25,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:25,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:40:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:40:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:40:25,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:26,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:26,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:26,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:26,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:26,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:26,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:26,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:26,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:26,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:26,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:26,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:26,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:26,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2020-10-29 03:40:26,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494151541] [2020-10-29 03:40:26,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:26,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:40:26,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565839535] [2020-10-29 03:40:26,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:40:26,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:26,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:40:26,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:40:26,693 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 33 states. [2020-10-29 03:40:27,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:27,118 INFO L93 Difference]: Finished difference Result 181 states and 187 transitions. [2020-10-29 03:40:27,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:40:27,118 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 106 [2020-10-29 03:40:27,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:27,120 INFO L225 Difference]: With dead ends: 181 [2020-10-29 03:40:27,120 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 03:40:27,121 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 03:40:27,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 03:40:27,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-29 03:40:27,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-29 03:40:27,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2020-10-29 03:40:27,185 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 106 [2020-10-29 03:40:27,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:27,186 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2020-10-29 03:40:27,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:40:27,186 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2020-10-29 03:40:27,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 03:40:27,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:27,187 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:27,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:40:27,187 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:27,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:27,188 INFO L82 PathProgramCache]: Analyzing trace with hash -222392554, now seen corresponding path program 30 times [2020-10-29 03:40:27,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:27,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630160645] [2020-10-29 03:40:27,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:27,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:27,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:28,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:32,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:32,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 03:40:32,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:40:32,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 03:40:32,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:32,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:40:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 03:40:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:40:32,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:33,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:33,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:33,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:33,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:33,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:33,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:33,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:33,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:33,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:33,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:33,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2020-10-29 03:40:33,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630160645] [2020-10-29 03:40:33,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:33,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:40:33,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681754441] [2020-10-29 03:40:33,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:40:33,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:33,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:40:33,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:40:33,033 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 34 states. [2020-10-29 03:40:33,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:33,372 INFO L93 Difference]: Finished difference Result 186 states and 192 transitions. [2020-10-29 03:40:33,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:40:33,373 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 109 [2020-10-29 03:40:33,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:33,374 INFO L225 Difference]: With dead ends: 186 [2020-10-29 03:40:33,374 INFO L226 Difference]: Without dead ends: 113 [2020-10-29 03:40:33,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:40:33,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-29 03:40:33,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-29 03:40:33,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-29 03:40:33,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2020-10-29 03:40:33,447 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 109 [2020-10-29 03:40:33,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:33,447 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2020-10-29 03:40:33,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:40:33,448 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2020-10-29 03:40:33,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 03:40:33,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:33,448 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:33,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:40:33,449 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:33,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:33,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1741128747, now seen corresponding path program 31 times [2020-10-29 03:40:33,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:33,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965455758] [2020-10-29 03:40:33,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:33,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:33,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:34,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:38,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:38,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 03:40:38,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:40:38,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:40:38,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:38,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:40:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 03:40:38,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:40:38,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:39,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:39,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:39,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:39,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:39,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:39,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:39,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:39,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:39,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:39,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2020-10-29 03:40:39,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965455758] [2020-10-29 03:40:39,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:39,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:40:39,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556455823] [2020-10-29 03:40:39,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:40:39,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:39,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:40:39,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:40:39,327 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 35 states. [2020-10-29 03:40:39,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:39,773 INFO L93 Difference]: Finished difference Result 191 states and 197 transitions. [2020-10-29 03:40:39,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:40:39,773 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 112 [2020-10-29 03:40:39,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:39,775 INFO L225 Difference]: With dead ends: 191 [2020-10-29 03:40:39,775 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 03:40:39,776 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 03:40:39,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 03:40:39,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-29 03:40:39,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-29 03:40:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2020-10-29 03:40:39,838 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 112 [2020-10-29 03:40:39,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:39,838 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2020-10-29 03:40:39,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:40:39,838 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2020-10-29 03:40:39,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 03:40:39,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:39,839 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:39,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:40:39,839 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:39,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:39,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1196065526, now seen corresponding path program 32 times [2020-10-29 03:40:39,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:39,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78267339] [2020-10-29 03:40:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:39,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:40,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:40,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:44,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:44,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 03:40:44,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:40:44,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 03:40:44,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:44,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:44,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:40:44,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 03:40:44,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:40:44,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:45,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:45,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:45,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:45,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:45,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:45,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:45,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:45,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:45,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:45,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2020-10-29 03:40:45,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78267339] [2020-10-29 03:40:45,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:45,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:40:45,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307474768] [2020-10-29 03:40:45,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:40:45,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:45,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:40:45,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:40:45,794 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand 36 states. [2020-10-29 03:40:46,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:46,271 INFO L93 Difference]: Finished difference Result 196 states and 202 transitions. [2020-10-29 03:40:46,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:40:46,271 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 115 [2020-10-29 03:40:46,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:46,272 INFO L225 Difference]: With dead ends: 196 [2020-10-29 03:40:46,272 INFO L226 Difference]: Without dead ends: 119 [2020-10-29 03:40:46,273 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 03:40:46,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-29 03:40:46,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2020-10-29 03:40:46,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-29 03:40:46,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2020-10-29 03:40:46,387 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 115 [2020-10-29 03:40:46,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:46,387 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2020-10-29 03:40:46,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:40:46,388 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2020-10-29 03:40:46,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 03:40:46,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:46,389 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:46,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:40:46,389 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:46,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:46,389 INFO L82 PathProgramCache]: Analyzing trace with hash 2130645963, now seen corresponding path program 33 times [2020-10-29 03:40:46,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:46,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500093686] [2020-10-29 03:40:46,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:46,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:46,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:47,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:51,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:51,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 03:40:51,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:40:51,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:40:51,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:51,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:40:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 03:40:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:40:51,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:52,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:52,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:52,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:52,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:52,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:52,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:52,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:52,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:52,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:52,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2020-10-29 03:40:52,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500093686] [2020-10-29 03:40:52,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:52,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:40:52,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404925254] [2020-10-29 03:40:52,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:40:52,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:52,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:40:52,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:40:52,371 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 37 states. [2020-10-29 03:40:52,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:52,852 INFO L93 Difference]: Finished difference Result 201 states and 207 transitions. [2020-10-29 03:40:52,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:40:52,853 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 118 [2020-10-29 03:40:52,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:52,854 INFO L225 Difference]: With dead ends: 201 [2020-10-29 03:40:52,854 INFO L226 Difference]: Without dead ends: 122 [2020-10-29 03:40:52,855 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 03:40:52,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-29 03:40:52,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-10-29 03:40:52,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-29 03:40:52,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2020-10-29 03:40:52,929 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 118 [2020-10-29 03:40:52,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:52,930 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2020-10-29 03:40:52,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:40:52,930 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2020-10-29 03:40:52,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 03:40:52,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:52,931 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:52,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:40:52,931 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:52,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:52,931 INFO L82 PathProgramCache]: Analyzing trace with hash 667807446, now seen corresponding path program 34 times [2020-10-29 03:40:52,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:52,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020671027] [2020-10-29 03:40:52,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:52,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:53,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:57,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:57,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 03:40:57,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:40:57,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:40:57,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:57,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:57,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:40:57,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 03:40:57,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:40:57,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:58,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:58,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:58,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:58,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:58,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:58,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:58,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:58,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:58,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:58,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:58,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:58,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-10-29 03:40:58,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020671027] [2020-10-29 03:40:58,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:58,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:40:58,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116632845] [2020-10-29 03:40:58,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:40:58,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:58,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:40:58,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:40:58,959 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand 38 states. [2020-10-29 03:40:59,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:59,348 INFO L93 Difference]: Finished difference Result 206 states and 212 transitions. [2020-10-29 03:40:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:40:59,349 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 121 [2020-10-29 03:40:59,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:59,350 INFO L225 Difference]: With dead ends: 206 [2020-10-29 03:40:59,350 INFO L226 Difference]: Without dead ends: 125 [2020-10-29 03:40:59,352 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 03:40:59,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-29 03:40:59,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-29 03:40:59,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-29 03:40:59,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2020-10-29 03:40:59,438 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 121 [2020-10-29 03:40:59,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:59,438 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2020-10-29 03:40:59,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:40:59,438 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2020-10-29 03:40:59,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 03:40:59,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:59,439 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:59,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:40:59,439 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:59,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:59,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1851419499, now seen corresponding path program 35 times [2020-10-29 03:40:59,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:59,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044716463] [2020-10-29 03:40:59,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:59,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:59,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:04,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:04,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 03:41:04,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:41:04,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:41:04,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:04,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 03:41:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:41:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 03:41:04,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:05,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:05,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:05,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:05,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:05,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:05,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:41:05,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:05,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:05,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:05,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:05,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:05,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2020-10-29 03:41:05,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044716463] [2020-10-29 03:41:05,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:05,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 03:41:05,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566349464] [2020-10-29 03:41:05,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 03:41:05,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:05,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 03:41:05,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:41:05,545 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 39 states. [2020-10-29 03:41:06,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:06,054 INFO L93 Difference]: Finished difference Result 211 states and 217 transitions. [2020-10-29 03:41:06,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:41:06,054 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 124 [2020-10-29 03:41:06,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:06,055 INFO L225 Difference]: With dead ends: 211 [2020-10-29 03:41:06,056 INFO L226 Difference]: Without dead ends: 128 [2020-10-29 03:41:06,057 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 03:41:06,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-29 03:41:06,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-10-29 03:41:06,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-29 03:41:06,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2020-10-29 03:41:06,127 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 124 [2020-10-29 03:41:06,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:06,128 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2020-10-29 03:41:06,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-29 03:41:06,128 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2020-10-29 03:41:06,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 03:41:06,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:06,128 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:06,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 03:41:06,129 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:06,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:06,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1515901622, now seen corresponding path program 36 times [2020-10-29 03:41:06,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:06,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822059296] [2020-10-29 03:41:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:06,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:06,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:11,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:11,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 03:41:11,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:41:11,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 03:41:11,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:11,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 03:41:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 03:41:11,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:41:11,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:12,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:12,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:12,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:12,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:12,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:12,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:41:12,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:12,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:12,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:12,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:12,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:12,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2020-10-29 03:41:12,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822059296] [2020-10-29 03:41:12,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:12,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 03:41:12,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394252789] [2020-10-29 03:41:12,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 03:41:12,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:12,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 03:41:12,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:41:12,320 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand 40 states. [2020-10-29 03:41:12,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:12,891 INFO L93 Difference]: Finished difference Result 216 states and 222 transitions. [2020-10-29 03:41:12,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 03:41:12,892 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 127 [2020-10-29 03:41:12,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:12,893 INFO L225 Difference]: With dead ends: 216 [2020-10-29 03:41:12,893 INFO L226 Difference]: Without dead ends: 131 [2020-10-29 03:41:12,895 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 03:41:12,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-29 03:41:13,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-10-29 03:41:13,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-29 03:41:13,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2020-10-29 03:41:13,012 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 127 [2020-10-29 03:41:13,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:13,012 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2020-10-29 03:41:13,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 03:41:13,013 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2020-10-29 03:41:13,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 03:41:13,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:13,013 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:13,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 03:41:13,014 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:13,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:13,014 INFO L82 PathProgramCache]: Analyzing trace with hash -723023093, now seen corresponding path program 37 times [2020-10-29 03:41:13,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:13,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155971319] [2020-10-29 03:41:13,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:13,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:13,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:18,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:18,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 03:41:18,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:41:18,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:41:18,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:18,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:18,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-29 03:41:18,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:41:18,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 03:41:18,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:19,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:19,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:19,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:19,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:19,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:19,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:41:19,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:19,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:19,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:19,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:19,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:19,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2109 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2020-10-29 03:41:19,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155971319] [2020-10-29 03:41:19,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:19,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-29 03:41:19,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750621540] [2020-10-29 03:41:19,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-29 03:41:19,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:19,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-29 03:41:19,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:41:19,225 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 41 states. [2020-10-29 03:41:19,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:19,762 INFO L93 Difference]: Finished difference Result 221 states and 227 transitions. [2020-10-29 03:41:19,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 03:41:19,762 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 130 [2020-10-29 03:41:19,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:19,763 INFO L225 Difference]: With dead ends: 221 [2020-10-29 03:41:19,764 INFO L226 Difference]: Without dead ends: 134 [2020-10-29 03:41:19,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:41:19,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-29 03:41:19,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-10-29 03:41:19,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-29 03:41:19,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 136 transitions. [2020-10-29 03:41:19,842 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 136 transitions. Word has length 130 [2020-10-29 03:41:19,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:19,842 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 136 transitions. [2020-10-29 03:41:19,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-29 03:41:19,843 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 136 transitions. [2020-10-29 03:41:19,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 03:41:19,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:19,844 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:19,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 03:41:19,844 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:19,844 INFO L82 PathProgramCache]: Analyzing trace with hash 981675670, now seen corresponding path program 38 times [2020-10-29 03:41:19,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:19,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025979869] [2020-10-29 03:41:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:19,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:20,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:24,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:24,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 03:41:24,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:41:24,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 03:41:24,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:24,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-29 03:41:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 03:41:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:41:24,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:26,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:26,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:26,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:26,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:26,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:26,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:41:26,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:26,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:26,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2020-10-29 03:41:26,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025979869] [2020-10-29 03:41:26,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:26,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 03:41:26,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843644438] [2020-10-29 03:41:26,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 03:41:26,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:26,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 03:41:26,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:41:26,121 INFO L87 Difference]: Start difference. First operand 134 states and 136 transitions. Second operand 42 states. [2020-10-29 03:41:26,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:26,584 INFO L93 Difference]: Finished difference Result 226 states and 232 transitions. [2020-10-29 03:41:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 03:41:26,585 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 133 [2020-10-29 03:41:26,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:26,586 INFO L225 Difference]: With dead ends: 226 [2020-10-29 03:41:26,586 INFO L226 Difference]: Without dead ends: 137 [2020-10-29 03:41:26,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:41:26,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-29 03:41:26,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-10-29 03:41:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-29 03:41:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2020-10-29 03:41:26,665 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 133 [2020-10-29 03:41:26,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:26,665 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2020-10-29 03:41:26,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 03:41:26,665 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2020-10-29 03:41:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 03:41:26,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:26,666 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:26,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 03:41:26,666 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:26,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:26,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1137413461, now seen corresponding path program 39 times [2020-10-29 03:41:26,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:26,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739413874] [2020-10-29 03:41:26,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:26,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:26,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:31,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:31,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 03:41:31,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:41:31,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:41:31,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:31,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:31,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-29 03:41:31,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-29 03:41:31,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 03:41:31,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:32,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:32,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:32,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:32,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:32,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:32,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:41:32,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:32,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:32,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:32,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:32,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:32,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2340 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2020-10-29 03:41:32,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739413874] [2020-10-29 03:41:32,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:32,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-29 03:41:32,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291933765] [2020-10-29 03:41:32,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-29 03:41:32,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:32,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-29 03:41:32,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:41:32,982 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 43 states. [2020-10-29 03:41:33,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:33,539 INFO L93 Difference]: Finished difference Result 231 states and 237 transitions. [2020-10-29 03:41:33,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-29 03:41:33,540 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 136 [2020-10-29 03:41:33,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:33,541 INFO L225 Difference]: With dead ends: 231 [2020-10-29 03:41:33,541 INFO L226 Difference]: Without dead ends: 140 [2020-10-29 03:41:33,541 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 03:41:33,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-29 03:41:33,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-29 03:41:33,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-29 03:41:33,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2020-10-29 03:41:33,618 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 136 [2020-10-29 03:41:33,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:33,618 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2020-10-29 03:41:33,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-29 03:41:33,618 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2020-10-29 03:41:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 03:41:33,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:33,619 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:33,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 03:41:33,619 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:33,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:33,619 INFO L82 PathProgramCache]: Analyzing trace with hash -648478090, now seen corresponding path program 40 times [2020-10-29 03:41:33,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:33,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846422633] [2020-10-29 03:41:33,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:33,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:33,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:38,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:38,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 03:41:38,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:41:38,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 03:41:38,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:38,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-29 03:41:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:41:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:41:38,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:39,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:39,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:39,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:39,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:39,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:39,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:41:39,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:39,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:39,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:39,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2460 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2020-10-29 03:41:39,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846422633] [2020-10-29 03:41:39,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:39,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-29 03:41:39,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026846542] [2020-10-29 03:41:39,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-29 03:41:39,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:39,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-29 03:41:39,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:41:39,992 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand 44 states. [2020-10-29 03:41:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:40,574 INFO L93 Difference]: Finished difference Result 236 states and 242 transitions. [2020-10-29 03:41:40,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 03:41:40,575 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 139 [2020-10-29 03:41:40,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:40,576 INFO L225 Difference]: With dead ends: 236 [2020-10-29 03:41:40,576 INFO L226 Difference]: Without dead ends: 143 [2020-10-29 03:41:40,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:41:40,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-29 03:41:40,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-10-29 03:41:40,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-29 03:41:40,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2020-10-29 03:41:40,709 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 139 [2020-10-29 03:41:40,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:40,711 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2020-10-29 03:41:40,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-29 03:41:40,712 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2020-10-29 03:41:40,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 03:41:40,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:40,713 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:40,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 03:41:40,713 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:40,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:40,713 INFO L82 PathProgramCache]: Analyzing trace with hash 2018452043, now seen corresponding path program 41 times [2020-10-29 03:41:40,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:40,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665749917] [2020-10-29 03:41:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:40,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:41,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:45,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:45,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 03:41:45,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:41:45,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:41:45,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:45,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:45,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-29 03:41:45,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:41:45,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 03:41:45,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:47,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:47,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:47,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:47,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:47,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:47,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:41:47,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:47,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:47,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:47,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:47,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:47,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2583 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2020-10-29 03:41:47,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665749917] [2020-10-29 03:41:47,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:47,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-29 03:41:47,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057933051] [2020-10-29 03:41:47,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-29 03:41:47,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:47,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-29 03:41:47,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:41:47,129 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 45 states. [2020-10-29 03:41:47,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:47,616 INFO L93 Difference]: Finished difference Result 241 states and 247 transitions. [2020-10-29 03:41:47,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-29 03:41:47,616 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 142 [2020-10-29 03:41:47,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:47,617 INFO L225 Difference]: With dead ends: 241 [2020-10-29 03:41:47,618 INFO L226 Difference]: Without dead ends: 146 [2020-10-29 03:41:47,619 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 03:41:47,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-29 03:41:47,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-29 03:41:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-29 03:41:47,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2020-10-29 03:41:47,747 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 142 [2020-10-29 03:41:47,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:47,747 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2020-10-29 03:41:47,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-29 03:41:47,747 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2020-10-29 03:41:47,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 03:41:47,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:47,748 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:47,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 03:41:47,749 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:47,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:47,749 INFO L82 PathProgramCache]: Analyzing trace with hash 493768278, now seen corresponding path program 42 times [2020-10-29 03:41:47,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:47,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911836362] [2020-10-29 03:41:47,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:47,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:48,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:52,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:52,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 03:41:52,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:41:52,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 03:41:52,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:52,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:52,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-29 03:41:52,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-29 03:41:52,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:41:52,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:54,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:54,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:54,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:54,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:54,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:54,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:41:54,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:54,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:54,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:54,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:54,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:54,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:54,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2709 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 1806 trivial. 0 not checked. [2020-10-29 03:41:54,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911836362] [2020-10-29 03:41:54,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:54,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-29 03:41:54,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334862279] [2020-10-29 03:41:54,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-29 03:41:54,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:54,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-29 03:41:54,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:41:54,278 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand 46 states. [2020-10-29 03:41:54,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:54,921 INFO L93 Difference]: Finished difference Result 246 states and 252 transitions. [2020-10-29 03:41:54,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 03:41:54,921 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 145 [2020-10-29 03:41:54,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:54,923 INFO L225 Difference]: With dead ends: 246 [2020-10-29 03:41:54,923 INFO L226 Difference]: Without dead ends: 149 [2020-10-29 03:41:54,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:41:54,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-29 03:41:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-10-29 03:41:55,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-29 03:41:55,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2020-10-29 03:41:55,027 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 145 [2020-10-29 03:41:55,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:55,027 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2020-10-29 03:41:55,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-29 03:41:55,027 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2020-10-29 03:41:55,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 03:41:55,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:55,028 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:55,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 03:41:55,028 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:55,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:55,029 INFO L82 PathProgramCache]: Analyzing trace with hash -2017093141, now seen corresponding path program 43 times [2020-10-29 03:41:55,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:55,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371405058] [2020-10-29 03:41:55,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:55,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:55,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:00,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:00,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 03:42:00,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:00,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 03:42:00,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:00,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:00,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-29 03:42:00,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:42:00,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 03:42:00,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:01,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:01,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:01,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:01,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:01,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:01,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:01,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 1892 trivial. 0 not checked. [2020-10-29 03:42:01,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371405058] [2020-10-29 03:42:01,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:01,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-29 03:42:01,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603267267] [2020-10-29 03:42:01,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-29 03:42:01,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:01,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-29 03:42:01,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:42:01,602 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 47 states. [2020-10-29 03:42:02,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:02,186 INFO L93 Difference]: Finished difference Result 251 states and 257 transitions. [2020-10-29 03:42:02,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-29 03:42:02,187 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 148 [2020-10-29 03:42:02,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:02,188 INFO L225 Difference]: With dead ends: 251 [2020-10-29 03:42:02,188 INFO L226 Difference]: Without dead ends: 152 [2020-10-29 03:42:02,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:42:02,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-29 03:42:02,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-10-29 03:42:02,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-29 03:42:02,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 154 transitions. [2020-10-29 03:42:02,274 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 154 transitions. Word has length 148 [2020-10-29 03:42:02,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:02,275 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 154 transitions. [2020-10-29 03:42:02,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-29 03:42:02,275 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 154 transitions. [2020-10-29 03:42:02,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 03:42:02,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:02,276 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:02,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-29 03:42:02,276 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:02,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:02,277 INFO L82 PathProgramCache]: Analyzing trace with hash -489352650, now seen corresponding path program 44 times [2020-10-29 03:42:02,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:02,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526538217] [2020-10-29 03:42:02,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:02,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:02,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:07,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:07,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 03:42:07,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:07,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:42:07,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:07,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:07,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-29 03:42:07,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:42:07,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:42:07,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:08,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:08,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:08,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:08,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:08,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:42:08,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:08,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:08,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:08,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:08,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:08,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2020-10-29 03:42:08,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526538217] [2020-10-29 03:42:08,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:08,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-29 03:42:08,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680056864] [2020-10-29 03:42:08,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-29 03:42:08,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:08,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-29 03:42:08,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:42:08,916 INFO L87 Difference]: Start difference. First operand 152 states and 154 transitions. Second operand 48 states. [2020-10-29 03:42:09,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:09,501 INFO L93 Difference]: Finished difference Result 256 states and 262 transitions. [2020-10-29 03:42:09,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-29 03:42:09,502 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 151 [2020-10-29 03:42:09,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:09,503 INFO L225 Difference]: With dead ends: 256 [2020-10-29 03:42:09,503 INFO L226 Difference]: Without dead ends: 155 [2020-10-29 03:42:09,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:42:09,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-29 03:42:09,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-10-29 03:42:09,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-29 03:42:09,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2020-10-29 03:42:09,590 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 151 [2020-10-29 03:42:09,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:09,591 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2020-10-29 03:42:09,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-29 03:42:09,591 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2020-10-29 03:42:09,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 03:42:09,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:09,592 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:09,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-29 03:42:09,592 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:09,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:09,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1940248971, now seen corresponding path program 45 times [2020-10-29 03:42:09,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:09,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499749170] [2020-10-29 03:42:09,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:09,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:09,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:14,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:14,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 03:42:14,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:14,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:42:14,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:14,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:14,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-29 03:42:14,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:42:14,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 03:42:14,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:16,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:16,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:16,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:16,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:16,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:16,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:16,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:16,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:16,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:16,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2020-10-29 03:42:16,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499749170] [2020-10-29 03:42:16,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:16,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-29 03:42:16,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588671936] [2020-10-29 03:42:16,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-29 03:42:16,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:16,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-29 03:42:16,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:42:16,278 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 49 states. [2020-10-29 03:42:16,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:16,937 INFO L93 Difference]: Finished difference Result 261 states and 267 transitions. [2020-10-29 03:42:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-29 03:42:16,938 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 154 [2020-10-29 03:42:16,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:16,939 INFO L225 Difference]: With dead ends: 261 [2020-10-29 03:42:16,939 INFO L226 Difference]: Without dead ends: 158 [2020-10-29 03:42:16,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:42:16,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-29 03:42:17,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-29 03:42:17,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-29 03:42:17,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 160 transitions. [2020-10-29 03:42:17,044 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 160 transitions. Word has length 154 [2020-10-29 03:42:17,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:17,045 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 160 transitions. [2020-10-29 03:42:17,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-29 03:42:17,045 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 160 transitions. [2020-10-29 03:42:17,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 03:42:17,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:17,046 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:17,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-29 03:42:17,046 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:17,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:17,046 INFO L82 PathProgramCache]: Analyzing trace with hash 455036438, now seen corresponding path program 46 times [2020-10-29 03:42:17,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:17,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223078566] [2020-10-29 03:42:17,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:17,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:17,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:22,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:22,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 03:42:22,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:42:22,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 03:42:22,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:22,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:22,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-29 03:42:22,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:42:22,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:42:22,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0