/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_copyInitSum2_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:38:08,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:38:08,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:38:08,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:38:08,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:38:08,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:38:08,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:38:08,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:38:08,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:38:08,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:38:08,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:38:08,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:38:08,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:38:08,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:38:08,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:38:08,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:38:08,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:38:08,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:38:08,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:38:08,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:38:08,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:38:08,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:38:08,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:38:08,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:38:08,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:38:08,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:38:08,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:38:08,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:38:08,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:38:08,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:38:08,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:38:08,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:38:08,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:38:08,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:38:08,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:38:08,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:38:08,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:38:08,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:38:08,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:38:08,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:38:08,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:38:08,600 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 03:38:08,652 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:38:08,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:38:08,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:38:08,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:38:08,658 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:38:08,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:38:08,658 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:38:08,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:38:08,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:38:08,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:38:08,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:38:08,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:38:08,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:38:08,661 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:38:08,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:38:08,662 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:38:08,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:38:08,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:38:08,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:38:08,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:38:08,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:38:08,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:38:08,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:38:08,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:38:08,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:38:08,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:38:08,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:38:08,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:38:08,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:38:08,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:38:09,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:38:09,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:38:09,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:38:09,101 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:38:09,102 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:38:09,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copyInitSum2_ground-1.i [2020-10-29 03:38:09,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/315131cc7/c5582b38d0e24ea3826710093a0aef7d/FLAG13c6a1ae7 [2020-10-29 03:38:09,845 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:38:09,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copyInitSum2_ground-1.i [2020-10-29 03:38:09,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/315131cc7/c5582b38d0e24ea3826710093a0aef7d/FLAG13c6a1ae7 [2020-10-29 03:38:10,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/315131cc7/c5582b38d0e24ea3826710093a0aef7d [2020-10-29 03:38:10,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:38:10,215 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:38:10,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:38:10,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:38:10,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:38:10,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:38:10" (1/1) ... [2020-10-29 03:38:10,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5f536b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:10, skipping insertion in model container [2020-10-29 03:38:10,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:38:10" (1/1) ... [2020-10-29 03:38:10,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:38:10,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:38:10,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:38:10,517 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:38:10,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:38:10,555 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:38:10,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:10 WrapperNode [2020-10-29 03:38:10,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:38:10,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:38:10,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:38:10,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:38:10,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:10" (1/1) ... [2020-10-29 03:38:10,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:10" (1/1) ... [2020-10-29 03:38:10,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:10" (1/1) ... [2020-10-29 03:38:10,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:10" (1/1) ... [2020-10-29 03:38:10,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:10" (1/1) ... [2020-10-29 03:38:10,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:10" (1/1) ... [2020-10-29 03:38:10,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:10" (1/1) ... [2020-10-29 03:38:10,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:38:10,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:38:10,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:38:10,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:38:10,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:10" (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 03:38:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:38:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:38:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:38:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:38:10,676 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:38:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:38:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:38:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:38:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:38:10,677 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:38:10,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:38:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:38:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:38:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:38:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:38:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:38:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:38:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:38:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:38:11,048 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:38:11,049 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-29 03:38:11,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:38:11 BoogieIcfgContainer [2020-10-29 03:38:11,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:38:11,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:38:11,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:38:11,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:38:11,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:38:10" (1/3) ... [2020-10-29 03:38:11,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513c39e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:38:11, skipping insertion in model container [2020-10-29 03:38:11,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:10" (2/3) ... [2020-10-29 03:38:11,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513c39e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:38:11, skipping insertion in model container [2020-10-29 03:38:11,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:38:11" (3/3) ... [2020-10-29 03:38:11,060 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copyInitSum2_ground-1.i [2020-10-29 03:38:11,072 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:38:11,077 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:38:11,091 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:38:11,119 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:38:11,120 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:38:11,120 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:38:11,120 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:38:11,120 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:38:11,120 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:38:11,121 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:38:11,121 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:38:11,139 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-29 03:38:11,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 03:38:11,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:11,147 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 03:38:11,147 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:11,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:11,154 INFO L82 PathProgramCache]: Analyzing trace with hash -925662558, now seen corresponding path program 1 times [2020-10-29 03:38:11,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:11,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296118152] [2020-10-29 03:38:11,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:11,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:11,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:11,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:11,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:11,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 03:38:11,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:38:11,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-29 03:38:11,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:11,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:38:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:38:11,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:38:11,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:11,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:11,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:11,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:11,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:11,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:38:11,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:11,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:11,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:11,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:11,839 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 03:38:11,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296118152] [2020-10-29 03:38:11,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:38:11,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:38:11,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832624224] [2020-10-29 03:38:11,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:38:11,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:11,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:38:11,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:38:11,869 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-10-29 03:38:12,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:12,005 INFO L93 Difference]: Finished difference Result 63 states and 87 transitions. [2020-10-29 03:38:12,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:38:12,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-29 03:38:12,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:12,016 INFO L225 Difference]: With dead ends: 63 [2020-10-29 03:38:12,016 INFO L226 Difference]: Without dead ends: 31 [2020-10-29 03:38:12,020 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 03:38:12,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-29 03:38:12,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-29 03:38:12,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 03:38:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-29 03:38:12,067 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 19 [2020-10-29 03:38:12,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:12,068 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-29 03:38:12,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:38:12,068 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-29 03:38:12,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 03:38:12,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:12,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:12,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:38:12,070 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:12,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:12,072 INFO L82 PathProgramCache]: Analyzing trace with hash 504393060, now seen corresponding path program 1 times [2020-10-29 03:38:12,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:12,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424086088] [2020-10-29 03:38:12,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:12,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:12,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:12,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:12,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:13,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:13,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:38:13,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:38:13,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1786 [2020-10-29 03:38:13,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:13,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:13,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:38:13,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:13,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:38:13,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:14,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:14,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:14,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:14,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:14,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:14,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:38:14,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:14,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:14,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:14,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424086088] [2020-10-29 03:38:14,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:14,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:38:14,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250316327] [2020-10-29 03:38:14,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:38:14,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:14,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:38:14,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:38:14,244 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 12 states. [2020-10-29 03:38:14,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:14,696 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-10-29 03:38:14,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:38:14,697 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2020-10-29 03:38:14,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:14,699 INFO L225 Difference]: With dead ends: 43 [2020-10-29 03:38:14,699 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 03:38:14,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:38:14,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 03:38:14,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-10-29 03:38:14,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 03:38:14,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-10-29 03:38:14,710 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2020-10-29 03:38:14,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:14,711 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-10-29 03:38:14,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:38:14,711 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-10-29 03:38:14,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:38:14,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:14,713 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, 1, 1] [2020-10-29 03:38:14,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:38:14,713 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:14,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:14,714 INFO L82 PathProgramCache]: Analyzing trace with hash 241743422, now seen corresponding path program 1 times [2020-10-29 03:38:14,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:14,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147745998] [2020-10-29 03:38:14,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:14,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:14,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:14,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:15,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:15,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:38:15,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:38:15,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-10-29 03:38:15,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:15,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:15,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:38:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 03:38:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:38:15,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:15,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:15,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:15,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:15,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:15,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:15,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:15,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:15,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:15,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:15,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:15,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:15,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:15,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 03:38:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:15,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:15,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:15,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:38:15,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:15,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:38:15,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:15,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:38:15,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:15,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:38:15,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147745998] [2020-10-29 03:38:15,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:15,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:38:15,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909650341] [2020-10-29 03:38:15,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:38:15,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:15,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:38:15,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:38:15,551 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 5 states. [2020-10-29 03:38:15,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:15,658 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-10-29 03:38:15,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:38:15,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-29 03:38:15,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:15,662 INFO L225 Difference]: With dead ends: 69 [2020-10-29 03:38:15,662 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 03:38:15,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:38:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 03:38:15,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-29 03:38:15,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 03:38:15,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-10-29 03:38:15,674 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 32 [2020-10-29 03:38:15,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:15,674 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-10-29 03:38:15,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:38:15,675 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-10-29 03:38:15,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 03:38:15,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:15,676 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:15,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:38:15,677 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:15,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:15,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1344999512, now seen corresponding path program 2 times [2020-10-29 03:38:15,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:15,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443572982] [2020-10-29 03:38:15,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:15,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:15,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:15,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:17,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:17,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 03:38:17,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:38:17,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2052 [2020-10-29 03:38:17,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:17,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:17,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:38:17,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:38:17,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:38:17,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:17,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:17,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:17,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:17,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:17,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:17,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:38:17,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:17,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:17,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:17,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:17,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:17,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:17,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:38:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:17,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:17,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:17,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:38:17,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:17,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:38:17,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:17,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:38:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:17,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:38:17,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443572982] [2020-10-29 03:38:17,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:17,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:38:17,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805394585] [2020-10-29 03:38:17,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:38:17,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:17,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:38:17,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:38:17,824 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 6 states. [2020-10-29 03:38:17,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:17,951 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2020-10-29 03:38:17,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:38:17,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-29 03:38:17,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:17,952 INFO L225 Difference]: With dead ends: 78 [2020-10-29 03:38:17,953 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 03:38:17,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:38:17,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 03:38:17,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-29 03:38:17,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:38:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-10-29 03:38:17,965 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 37 [2020-10-29 03:38:17,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:17,965 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-10-29 03:38:17,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:38:17,965 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-10-29 03:38:17,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 03:38:17,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:17,967 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:17,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:38:17,983 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:17,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:17,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1255437194, now seen corresponding path program 3 times [2020-10-29 03:38:17,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:17,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492842721] [2020-10-29 03:38:17,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:18,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:18,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:18,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:23,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:23,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:38:23,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:38:23,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:38:23,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:23,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:38:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:38:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:38:23,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:23,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:23,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:23,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:23,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:23,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:23,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:23,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:23,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:23,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:23,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:23,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:23,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:23,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:38:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:23,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:23,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:23,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:38:23,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:23,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:23,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:23,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:23,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:23,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:38:23,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:23,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-29 03:38:23,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492842721] [2020-10-29 03:38:23,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:23,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:38:23,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254673992] [2020-10-29 03:38:23,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:38:23,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:23,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:38:23,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:38:23,108 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 7 states. [2020-10-29 03:38:23,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:23,262 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-10-29 03:38:23,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:38:23,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-29 03:38:23,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:23,266 INFO L225 Difference]: With dead ends: 87 [2020-10-29 03:38:23,266 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 03:38:23,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:38:23,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 03:38:23,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-29 03:38:23,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 03:38:23,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-10-29 03:38:23,290 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 42 [2020-10-29 03:38:23,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:23,292 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-10-29 03:38:23,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:38:23,292 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-10-29 03:38:23,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 03:38:23,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:23,296 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:23,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:38:23,296 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:23,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:23,297 INFO L82 PathProgramCache]: Analyzing trace with hash 287271008, now seen corresponding path program 4 times [2020-10-29 03:38:23,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:23,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132199533] [2020-10-29 03:38:23,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:23,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:23,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:23,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:28,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:28,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 03:38:28,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:38:28,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 03:38:28,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:28,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:28,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:38:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 03:38:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:38:28,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:28,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:28,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:28,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:28,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:28,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:28,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:28,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:28,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:28,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:28,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:28,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:28,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 03:38:28,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:38:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:28,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:28,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:28,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:38:28,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:28,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:28,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:28,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:38:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:28,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 03:38:28,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132199533] [2020-10-29 03:38:28,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:28,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:38:28,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119018367] [2020-10-29 03:38:28,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:38:28,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:28,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:38:28,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:38:28,457 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 8 states. [2020-10-29 03:38:28,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:28,600 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-29 03:38:28,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:38:28,601 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-10-29 03:38:28,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:28,602 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:38:28,602 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 03:38:28,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:38:28,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 03:38:28,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-29 03:38:28,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:38:28,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-10-29 03:38:28,613 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 47 [2020-10-29 03:38:28,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:28,613 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-10-29 03:38:28,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:38:28,614 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-10-29 03:38:28,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:38:28,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:28,615 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:28,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:38:28,615 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:28,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:28,616 INFO L82 PathProgramCache]: Analyzing trace with hash -136299858, now seen corresponding path program 5 times [2020-10-29 03:38:28,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:28,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751058142] [2020-10-29 03:38:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:28,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:28,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:28,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:33,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:33,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:38:33,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:38:33,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:38:33,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:33,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:33,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:38:33,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 03:38:33,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:38:33,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:33,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:33,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:33,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:33,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:33,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:33,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:33,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:33,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:33,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:33,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:38:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:33,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:33,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:33,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:38:33,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:33,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:38:33,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:33,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:38:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:33,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-29 03:38:33,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751058142] [2020-10-29 03:38:33,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:33,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:38:33,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976879462] [2020-10-29 03:38:33,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:38:33,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:33,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:38:33,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:38:33,763 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 9 states. [2020-10-29 03:38:33,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:33,926 INFO L93 Difference]: Finished difference Result 105 states and 113 transitions. [2020-10-29 03:38:33,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:38:33,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-29 03:38:33,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:33,929 INFO L225 Difference]: With dead ends: 105 [2020-10-29 03:38:33,929 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:38:33,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:38:33,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:38:33,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-10-29 03:38:33,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 03:38:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-10-29 03:38:33,950 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 52 [2020-10-29 03:38:33,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:33,951 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-10-29 03:38:33,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:38:33,954 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-10-29 03:38:33,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 03:38:33,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:33,955 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:33,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:38:33,956 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:33,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:33,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1213490920, now seen corresponding path program 6 times [2020-10-29 03:38:33,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:33,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431207606] [2020-10-29 03:38:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:33,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:34,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:34,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:39,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:39,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 03:38:39,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:38:39,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 03:38:39,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:39,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:38:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:38:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:38:39,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:39,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:39,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:39,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:39,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:39,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:39,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:38:39,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:39,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:39,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:39,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:39,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:39,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:39,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:38:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:39,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:39,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:39,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:38:39,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:39,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:38:39,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:39,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:39,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:38:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:39,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:38:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-10-29 03:38:39,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431207606] [2020-10-29 03:38:39,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:39,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:38:39,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9481492] [2020-10-29 03:38:39,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:38:39,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:39,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:38:39,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:38:39,142 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 10 states. [2020-10-29 03:38:39,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:39,313 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2020-10-29 03:38:39,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:38:39,314 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-29 03:38:39,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:39,315 INFO L225 Difference]: With dead ends: 114 [2020-10-29 03:38:39,316 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 03:38:39,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:38:39,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 03:38:39,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-10-29 03:38:39,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:38:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2020-10-29 03:38:39,340 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 57 [2020-10-29 03:38:39,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:39,345 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2020-10-29 03:38:39,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:38:39,345 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2020-10-29 03:38:39,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 03:38:39,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:39,347 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:39,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:38:39,347 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:39,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:39,348 INFO L82 PathProgramCache]: Analyzing trace with hash 2060108006, now seen corresponding path program 7 times [2020-10-29 03:38:39,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:39,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329924505] [2020-10-29 03:38:39,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:39,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:39,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:39,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:44,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:44,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 03:38:44,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:38:44,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:38:44,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:44,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:44,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:38:44,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:38:44,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:38:44,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:44,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:44,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:44,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:44,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:44,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:44,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:44,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:44,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:44,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:44,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:44,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:44,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:44,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:38:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:44,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:44,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:44,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:38:44,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:44,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:38:44,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:44,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:38:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:44,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 49 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 03:38:44,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329924505] [2020-10-29 03:38:44,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:44,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:38:44,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330215472] [2020-10-29 03:38:44,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:38:44,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:44,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:38:44,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:38:44,536 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 11 states. [2020-10-29 03:38:44,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:44,708 INFO L93 Difference]: Finished difference Result 123 states and 131 transitions. [2020-10-29 03:38:44,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:38:44,709 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2020-10-29 03:38:44,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:44,710 INFO L225 Difference]: With dead ends: 123 [2020-10-29 03:38:44,710 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 03:38:44,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:38:44,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 03:38:44,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-29 03:38:44,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-29 03:38:44,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2020-10-29 03:38:44,731 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 62 [2020-10-29 03:38:44,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:44,731 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2020-10-29 03:38:44,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:38:44,731 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2020-10-29 03:38:44,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:38:44,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:44,737 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:44,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:38:44,737 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:44,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:44,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1885700560, now seen corresponding path program 8 times [2020-10-29 03:38:44,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:44,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882689566] [2020-10-29 03:38:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:44,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:44,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:44,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:49,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:49,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 03:38:49,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:38:49,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:38:49,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:49,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:38:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 03:38:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:38:49,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:49,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:49,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:49,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:49,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:49,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:49,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:49,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:49,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:49,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 03:38:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:49,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:49,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:49,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:38:49,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:49,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:38:49,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:49,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:38:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:49,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:49,902 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 2 proven. 64 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-29 03:38:49,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882689566] [2020-10-29 03:38:49,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:49,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:38:49,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482817815] [2020-10-29 03:38:49,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:38:49,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:49,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:38:49,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:38:49,905 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand 12 states. [2020-10-29 03:38:50,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:50,101 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2020-10-29 03:38:50,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:38:50,102 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-10-29 03:38:50,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:50,103 INFO L225 Difference]: With dead ends: 132 [2020-10-29 03:38:50,104 INFO L226 Difference]: Without dead ends: 77 [2020-10-29 03:38:50,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:38:50,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-29 03:38:50,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2020-10-29 03:38:50,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:38:50,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-10-29 03:38:50,119 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 67 [2020-10-29 03:38:50,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:50,121 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-10-29 03:38:50,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:38:50,121 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-10-29 03:38:50,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 03:38:50,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:50,124 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:50,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:38:50,125 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:50,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:50,127 INFO L82 PathProgramCache]: Analyzing trace with hash 590290718, now seen corresponding path program 9 times [2020-10-29 03:38:50,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:50,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359680210] [2020-10-29 03:38:50,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:50,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:50,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:50,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:55,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:55,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 03:38:55,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:38:55,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 03:38:55,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:55,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:55,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:38:55,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 03:38:55,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:38:55,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:55,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:55,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:55,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:55,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:55,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:55,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:55,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:55,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:55,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:55,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:55,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:55,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:55,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:38:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:55,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:55,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:55,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:38:55,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:55,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:38:55,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:55,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:55,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:55,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:38:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:55,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:55,352 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 2 proven. 81 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-29 03:38:55,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359680210] [2020-10-29 03:38:55,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:55,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:38:55,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735081941] [2020-10-29 03:38:55,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:38:55,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:55,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:38:55,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:38:55,357 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 13 states. [2020-10-29 03:38:55,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:55,606 INFO L93 Difference]: Finished difference Result 141 states and 149 transitions. [2020-10-29 03:38:55,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:38:55,607 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2020-10-29 03:38:55,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:55,609 INFO L225 Difference]: With dead ends: 141 [2020-10-29 03:38:55,609 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 03:38:55,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:38:55,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 03:38:55,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-10-29 03:38:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 03:38:55,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2020-10-29 03:38:55,626 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 72 [2020-10-29 03:38:55,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:55,627 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2020-10-29 03:38:55,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:38:55,627 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2020-10-29 03:38:55,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 03:38:55,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:55,631 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:55,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:38:55,631 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:55,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:55,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1757863288, now seen corresponding path program 10 times [2020-10-29 03:38:55,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:55,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434337199] [2020-10-29 03:38:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:55,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:55,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:55,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:00,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:00,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 03:39:00,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:39:00,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 03:39:00,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:00,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:39:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:39:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:39:00,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:00,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:00,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:00,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:00,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:00,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:00,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:39:00,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:00,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:00,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:00,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:00,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:00,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:00,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:39:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:00,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:00,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:00,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:39:00,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:00,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:39:00,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:00,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:39:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:00,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:00,859 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-29 03:39:00,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434337199] [2020-10-29 03:39:00,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:00,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:39:00,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957967741] [2020-10-29 03:39:00,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:39:00,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:00,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:39:00,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:39:00,862 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 14 states. [2020-10-29 03:39:01,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:01,038 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-10-29 03:39:01,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:39:01,038 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 77 [2020-10-29 03:39:01,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:01,039 INFO L225 Difference]: With dead ends: 150 [2020-10-29 03:39:01,039 INFO L226 Difference]: Without dead ends: 87 [2020-10-29 03:39:01,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:39:01,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-29 03:39:01,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-10-29 03:39:01,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 03:39:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2020-10-29 03:39:01,060 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 77 [2020-10-29 03:39:01,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:01,061 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2020-10-29 03:39:01,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:39:01,061 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2020-10-29 03:39:01,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 03:39:01,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:01,065 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:01,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:39:01,065 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:01,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:01,066 INFO L82 PathProgramCache]: Analyzing trace with hash -682535594, now seen corresponding path program 11 times [2020-10-29 03:39:01,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:01,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927520466] [2020-10-29 03:39:01,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:01,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:01,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:01,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:06,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:06,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 03:39:06,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:39:06,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:39:06,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:06,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:06,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:39:06,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 03:39:06,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:39:06,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:06,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:06,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:06,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:06,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:06,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:06,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:06,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:06,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:06,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:06,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 03:39:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:06,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:06,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:06,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:39:06,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:06,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:39:06,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:06,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:06,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:39:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:06,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 2 proven. 121 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-29 03:39:06,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927520466] [2020-10-29 03:39:06,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:06,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:39:06,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168118072] [2020-10-29 03:39:06,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:39:06,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:06,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:39:06,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:39:06,274 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand 15 states. [2020-10-29 03:39:06,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:06,498 INFO L93 Difference]: Finished difference Result 159 states and 167 transitions. [2020-10-29 03:39:06,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:39:06,498 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 82 [2020-10-29 03:39:06,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:06,499 INFO L225 Difference]: With dead ends: 159 [2020-10-29 03:39:06,499 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:39:06,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:39:06,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:39:06,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-10-29 03:39:06,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 03:39:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2020-10-29 03:39:06,510 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 82 [2020-10-29 03:39:06,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:06,510 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2020-10-29 03:39:06,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:39:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2020-10-29 03:39:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 03:39:06,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:06,511 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:06,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:39:06,511 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:06,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1460828992, now seen corresponding path program 12 times [2020-10-29 03:39:06,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:06,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485664069] [2020-10-29 03:39:06,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:06,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:06,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:06,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:11,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:11,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 03:39:11,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:39:11,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:39:11,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:11,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:11,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:39:11,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 03:39:11,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:39:11,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:11,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:11,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:11,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:11,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:11,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:11,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:11,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:11,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:11,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:11,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 03:39:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:11,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:11,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:11,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:39:11,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:11,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:39:11,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:11,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:11,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:11,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:39:11,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:11,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 2 proven. 144 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-10-29 03:39:11,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485664069] [2020-10-29 03:39:11,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:11,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:39:11,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699199402] [2020-10-29 03:39:11,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:39:11,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:11,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:39:11,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:39:11,743 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand 16 states. [2020-10-29 03:39:11,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:11,951 INFO L93 Difference]: Finished difference Result 168 states and 176 transitions. [2020-10-29 03:39:11,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:39:11,951 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 87 [2020-10-29 03:39:11,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:11,952 INFO L225 Difference]: With dead ends: 168 [2020-10-29 03:39:11,952 INFO L226 Difference]: Without dead ends: 97 [2020-10-29 03:39:11,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:39:11,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-29 03:39:11,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-10-29 03:39:11,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 03:39:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2020-10-29 03:39:11,967 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 87 [2020-10-29 03:39:11,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:11,967 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2020-10-29 03:39:11,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:39:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2020-10-29 03:39:11,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 03:39:11,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:11,969 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:11,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:39:11,969 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:11,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:11,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1047880590, now seen corresponding path program 13 times [2020-10-29 03:39:11,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:11,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851088518] [2020-10-29 03:39:11,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:12,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:12,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:12,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:16,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:16,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 03:39:16,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:39:16,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:39:16,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:16,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:39:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:39:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:39:16,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:17,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:17,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:17,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:17,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:17,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:17,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:17,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:17,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:17,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:17,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:17,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:17,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:17,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 03:39:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:17,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:17,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:17,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:39:17,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:17,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:39:17,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:17,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:17,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:39:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:17,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 2 proven. 169 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-10-29 03:39:17,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851088518] [2020-10-29 03:39:17,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:17,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:39:17,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223322573] [2020-10-29 03:39:17,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:39:17,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:17,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:39:17,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:39:17,192 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand 17 states. [2020-10-29 03:39:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:17,426 INFO L93 Difference]: Finished difference Result 177 states and 185 transitions. [2020-10-29 03:39:17,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:39:17,427 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 92 [2020-10-29 03:39:17,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:17,428 INFO L225 Difference]: With dead ends: 177 [2020-10-29 03:39:17,428 INFO L226 Difference]: Without dead ends: 102 [2020-10-29 03:39:17,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:39:17,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-29 03:39:17,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-29 03:39:17,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 03:39:17,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2020-10-29 03:39:17,443 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 92 [2020-10-29 03:39:17,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:17,444 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2020-10-29 03:39:17,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:39:17,444 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2020-10-29 03:39:17,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 03:39:17,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:17,445 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:17,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:39:17,445 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:17,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:17,446 INFO L82 PathProgramCache]: Analyzing trace with hash -371356680, now seen corresponding path program 14 times [2020-10-29 03:39:17,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:17,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418119744] [2020-10-29 03:39:17,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:17,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:17,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:22,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:22,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 03:39:22,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:39:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 03:39:22,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:22,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:39:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 03:39:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:39:22,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:22,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:22,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:22,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:22,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:22,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:22,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:39:22,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:22,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:22,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:22,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 03:39:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:22,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:22,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:22,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:39:22,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:22,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:39:22,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:22,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:22,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:22,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:39:22,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:22,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 2 proven. 196 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-29 03:39:22,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418119744] [2020-10-29 03:39:22,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:22,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:39:22,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231878543] [2020-10-29 03:39:22,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:39:22,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:22,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:39:22,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:39:22,734 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand 18 states. [2020-10-29 03:39:22,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:22,977 INFO L93 Difference]: Finished difference Result 186 states and 194 transitions. [2020-10-29 03:39:22,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:39:22,979 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 97 [2020-10-29 03:39:22,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:22,980 INFO L225 Difference]: With dead ends: 186 [2020-10-29 03:39:22,980 INFO L226 Difference]: Without dead ends: 107 [2020-10-29 03:39:22,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:39:22,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-29 03:39:22,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2020-10-29 03:39:22,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-29 03:39:22,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2020-10-29 03:39:22,990 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 97 [2020-10-29 03:39:22,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:22,990 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 108 transitions. [2020-10-29 03:39:22,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:39:22,990 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 108 transitions. [2020-10-29 03:39:22,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 03:39:22,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:22,991 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:22,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:39:22,992 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:22,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:22,992 INFO L82 PathProgramCache]: Analyzing trace with hash -2132850234, now seen corresponding path program 15 times [2020-10-29 03:39:22,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:22,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911139064] [2020-10-29 03:39:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:23,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:23,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:23,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:28,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:28,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 03:39:28,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:39:28,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 03:39:28,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:28,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:28,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:39:28,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 03:39:28,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:39:28,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:28,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:28,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:28,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:28,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:28,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:28,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:28,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:28,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:28,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:28,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-29 03:39:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:28,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:28,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:28,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:39:28,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:28,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:39:28,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:28,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:28,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:28,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:39:28,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:28,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:28,283 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 2 proven. 225 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2020-10-29 03:39:28,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911139064] [2020-10-29 03:39:28,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:28,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:39:28,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168449918] [2020-10-29 03:39:28,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:39:28,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:28,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:39:28,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:39:28,289 INFO L87 Difference]: Start difference. First operand 105 states and 108 transitions. Second operand 19 states. [2020-10-29 03:39:28,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:28,556 INFO L93 Difference]: Finished difference Result 195 states and 203 transitions. [2020-10-29 03:39:28,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:39:28,556 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 102 [2020-10-29 03:39:28,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:28,558 INFO L225 Difference]: With dead ends: 195 [2020-10-29 03:39:28,559 INFO L226 Difference]: Without dead ends: 112 [2020-10-29 03:39:28,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:39:28,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-29 03:39:28,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2020-10-29 03:39:28,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-29 03:39:28,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 113 transitions. [2020-10-29 03:39:28,572 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 113 transitions. Word has length 102 [2020-10-29 03:39:28,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:28,572 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 113 transitions. [2020-10-29 03:39:28,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:39:28,572 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 113 transitions. [2020-10-29 03:39:28,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 03:39:28,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:28,574 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:28,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:39:28,574 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:28,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:28,574 INFO L82 PathProgramCache]: Analyzing trace with hash -662285136, now seen corresponding path program 16 times [2020-10-29 03:39:28,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:28,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649722265] [2020-10-29 03:39:28,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:28,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:28,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:28,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:33,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:33,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 03:39:33,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:39:33,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:39:33,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:33,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:39:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 03:39:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:39:33,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:33,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:33,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:33,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:33,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:33,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:33,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:33,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:33,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:33,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:33,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:33,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:33,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:33,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 03:39:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:33,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:33,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:33,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:39:33,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:33,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:39:33,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:33,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:33,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:33,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:39:33,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:33,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:39:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 2 proven. 256 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2020-10-29 03:39:33,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649722265] [2020-10-29 03:39:33,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:33,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:39:33,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035468820] [2020-10-29 03:39:33,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:39:33,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:33,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:39:33,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:39:33,880 INFO L87 Difference]: Start difference. First operand 110 states and 113 transitions. Second operand 20 states. [2020-10-29 03:39:34,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:34,130 INFO L93 Difference]: Finished difference Result 204 states and 212 transitions. [2020-10-29 03:39:34,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:39:34,130 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 107 [2020-10-29 03:39:34,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:34,131 INFO L225 Difference]: With dead ends: 204 [2020-10-29 03:39:34,131 INFO L226 Difference]: Without dead ends: 117 [2020-10-29 03:39:34,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:39:34,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-29 03:39:34,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2020-10-29 03:39:34,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-29 03:39:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 118 transitions. [2020-10-29 03:39:34,145 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 118 transitions. Word has length 107 [2020-10-29 03:39:34,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:34,145 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 118 transitions. [2020-10-29 03:39:34,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:39:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 118 transitions. [2020-10-29 03:39:34,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 03:39:34,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:34,147 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:34,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:39:34,147 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:34,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:34,147 INFO L82 PathProgramCache]: Analyzing trace with hash 131270654, now seen corresponding path program 17 times [2020-10-29 03:39:34,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:34,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072490867] [2020-10-29 03:39:34,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:34,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:34,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:35,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:39,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:39,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 03:39:39,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:39:39,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 03:39:39,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:39,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:39,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:39:39,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-29 03:39:39,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:39:39,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:39,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:39,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:39,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:39,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:39,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:39,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:39:39,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:39,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:39,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:39,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:39,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:39,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:39,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 03:39:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:39,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:39,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:39,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:39:39,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:39,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:39,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:39,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:39,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:39,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:39:39,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:39,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:39,481 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 2 proven. 289 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2020-10-29 03:39:39,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072490867] [2020-10-29 03:39:39,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:39,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:39:39,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458697222] [2020-10-29 03:39:39,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:39:39,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:39,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:39:39,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:39:39,484 INFO L87 Difference]: Start difference. First operand 115 states and 118 transitions. Second operand 21 states. [2020-10-29 03:39:39,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:39,785 INFO L93 Difference]: Finished difference Result 213 states and 221 transitions. [2020-10-29 03:39:39,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:39:39,786 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 112 [2020-10-29 03:39:39,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:39,787 INFO L225 Difference]: With dead ends: 213 [2020-10-29 03:39:39,787 INFO L226 Difference]: Without dead ends: 122 [2020-10-29 03:39:39,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:39:39,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-29 03:39:39,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2020-10-29 03:39:39,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-29 03:39:39,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 123 transitions. [2020-10-29 03:39:39,796 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 123 transitions. Word has length 112 [2020-10-29 03:39:39,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:39,798 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 123 transitions. [2020-10-29 03:39:39,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:39:39,799 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 123 transitions. [2020-10-29 03:39:39,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 03:39:39,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:39,800 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:39,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:39:39,800 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:39,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:39,801 INFO L82 PathProgramCache]: Analyzing trace with hash 989386088, now seen corresponding path program 18 times [2020-10-29 03:39:39,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:39,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132171469] [2020-10-29 03:39:39,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:39,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:39,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:41,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:44,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:44,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 03:39:44,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:39:44,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:39:44,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:44,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:44,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:39:44,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 03:39:44,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:39:44,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:45,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:45,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:45,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:45,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:45,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:45,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:45,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:45,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:45,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:45,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 03:39:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:45,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:45,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:45,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:39:45,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:45,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:45,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:45,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:39:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:45,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:45,153 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 2 proven. 324 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2020-10-29 03:39:45,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132171469] [2020-10-29 03:39:45,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:45,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:39:45,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308307468] [2020-10-29 03:39:45,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:39:45,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:45,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:39:45,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:39:45,157 INFO L87 Difference]: Start difference. First operand 120 states and 123 transitions. Second operand 22 states. [2020-10-29 03:39:45,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:45,457 INFO L93 Difference]: Finished difference Result 222 states and 230 transitions. [2020-10-29 03:39:45,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:39:45,458 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 117 [2020-10-29 03:39:45,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:45,459 INFO L225 Difference]: With dead ends: 222 [2020-10-29 03:39:45,459 INFO L226 Difference]: Without dead ends: 127 [2020-10-29 03:39:45,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:39:45,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-29 03:39:45,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-10-29 03:39:45,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-29 03:39:45,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 128 transitions. [2020-10-29 03:39:45,472 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 128 transitions. Word has length 117 [2020-10-29 03:39:45,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:45,472 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 128 transitions. [2020-10-29 03:39:45,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:39:45,473 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 128 transitions. [2020-10-29 03:39:45,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 03:39:45,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:45,474 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:45,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:39:45,474 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:45,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1033150006, now seen corresponding path program 19 times [2020-10-29 03:39:45,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:45,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768175254] [2020-10-29 03:39:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:45,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:45,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:48,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:50,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:50,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 03:39:50,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:39:50,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 03:39:50,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:50,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:39:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 03:39:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:39:50,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:50,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:50,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:50,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:50,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:50,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:50,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:50,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:50,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 03:39:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:50,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:50,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:50,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:39:50,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:50,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:39:50,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:50,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:39:50,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:50,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:50,843 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 2 proven. 361 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2020-10-29 03:39:50,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768175254] [2020-10-29 03:39:50,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:50,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:39:50,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882186389] [2020-10-29 03:39:50,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:39:50,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:50,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:39:50,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:39:50,845 INFO L87 Difference]: Start difference. First operand 125 states and 128 transitions. Second operand 23 states. [2020-10-29 03:39:51,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:51,144 INFO L93 Difference]: Finished difference Result 231 states and 239 transitions. [2020-10-29 03:39:51,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:39:51,145 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 122 [2020-10-29 03:39:51,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:51,146 INFO L225 Difference]: With dead ends: 231 [2020-10-29 03:39:51,146 INFO L226 Difference]: Without dead ends: 132 [2020-10-29 03:39:51,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:39:51,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-29 03:39:51,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-10-29 03:39:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-29 03:39:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 133 transitions. [2020-10-29 03:39:51,157 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 133 transitions. Word has length 122 [2020-10-29 03:39:51,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:51,158 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 133 transitions. [2020-10-29 03:39:51,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:39:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2020-10-29 03:39:51,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 03:39:51,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:51,159 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:51,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:39:51,160 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:51,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:51,160 INFO L82 PathProgramCache]: Analyzing trace with hash -132051424, now seen corresponding path program 20 times [2020-10-29 03:39:51,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:51,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787661404] [2020-10-29 03:39:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:51,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:51,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:54,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:56,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:56,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 03:39:56,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:39:56,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-29 03:39:56,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:56,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:56,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:39:56,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 03:39:56,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:39:56,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:56,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:56,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:56,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:56,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:56,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:56,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:56,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:56,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:56,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:56,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-29 03:39:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:56,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:56,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:56,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:39:56,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:56,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:39:56,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:56,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:56,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:56,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:39:56,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:56,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1014 backedges. 2 proven. 400 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-10-29 03:39:56,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787661404] [2020-10-29 03:39:56,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:56,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:39:56,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481199953] [2020-10-29 03:39:56,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:39:56,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:56,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:39:56,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:39:56,584 INFO L87 Difference]: Start difference. First operand 130 states and 133 transitions. Second operand 24 states. [2020-10-29 03:39:56,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:56,959 INFO L93 Difference]: Finished difference Result 240 states and 248 transitions. [2020-10-29 03:39:56,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:39:56,959 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 127 [2020-10-29 03:39:56,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:56,960 INFO L225 Difference]: With dead ends: 240 [2020-10-29 03:39:56,961 INFO L226 Difference]: Without dead ends: 137 [2020-10-29 03:39:56,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:39:56,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-29 03:39:56,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2020-10-29 03:39:56,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-29 03:39:56,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 138 transitions. [2020-10-29 03:39:56,973 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 138 transitions. Word has length 127 [2020-10-29 03:39:56,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:56,973 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 138 transitions. [2020-10-29 03:39:56,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:39:56,974 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 138 transitions. [2020-10-29 03:39:56,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 03:39:56,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:56,975 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:56,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:39:56,975 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:56,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:56,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1298664558, now seen corresponding path program 21 times [2020-10-29 03:39:56,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:56,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532698001] [2020-10-29 03:39:56,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:57,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:57,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:59,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:02,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:02,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 03:40:02,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:40:02,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:40:02,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:02,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:40:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 03:40:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:40:02,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:02,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:02,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:02,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:02,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:02,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:02,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:02,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:02,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:02,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:02,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:02,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:02,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:02,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 03:40:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:02,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:02,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:02,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:40:02,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:40:02,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:02,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:40:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1117 backedges. 2 proven. 441 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked. [2020-10-29 03:40:02,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532698001] [2020-10-29 03:40:02,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:02,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:40:02,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348664377] [2020-10-29 03:40:02,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:40:02,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:02,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:40:02,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:40:02,405 INFO L87 Difference]: Start difference. First operand 135 states and 138 transitions. Second operand 25 states. [2020-10-29 03:40:02,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:02,786 INFO L93 Difference]: Finished difference Result 249 states and 257 transitions. [2020-10-29 03:40:02,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:40:02,787 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 132 [2020-10-29 03:40:02,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:02,788 INFO L225 Difference]: With dead ends: 249 [2020-10-29 03:40:02,788 INFO L226 Difference]: Without dead ends: 142 [2020-10-29 03:40:02,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:40:02,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-29 03:40:02,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-10-29 03:40:02,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-29 03:40:02,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 143 transitions. [2020-10-29 03:40:02,801 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 143 transitions. Word has length 132 [2020-10-29 03:40:02,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:02,801 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 143 transitions. [2020-10-29 03:40:02,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:40:02,801 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 143 transitions. [2020-10-29 03:40:02,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-29 03:40:02,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:02,803 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:02,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:40:02,803 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:02,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:02,804 INFO L82 PathProgramCache]: Analyzing trace with hash 99286744, now seen corresponding path program 22 times [2020-10-29 03:40:02,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:02,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911280574] [2020-10-29 03:40:02,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:02,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:02,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:07,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:07,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:07,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 03:40:07,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:40:07,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-29 03:40:07,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:07,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:40:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 03:40:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:40:07,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:08,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:08,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:08,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:08,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:08,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:08,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:08,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:08,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:08,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:40:08,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 03:40:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:08,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:08,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:08,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:40:08,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:08,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:40:08,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:08,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:40:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:08,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:08,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 739 trivial. 0 not checked. [2020-10-29 03:40:08,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911280574] [2020-10-29 03:40:08,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:08,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:40:08,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264736717] [2020-10-29 03:40:08,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:40:08,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:08,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:40:08,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:40:08,331 INFO L87 Difference]: Start difference. First operand 140 states and 143 transitions. Second operand 26 states. [2020-10-29 03:40:08,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:08,715 INFO L93 Difference]: Finished difference Result 258 states and 266 transitions. [2020-10-29 03:40:08,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:40:08,716 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 137 [2020-10-29 03:40:08,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:08,717 INFO L225 Difference]: With dead ends: 258 [2020-10-29 03:40:08,717 INFO L226 Difference]: Without dead ends: 147 [2020-10-29 03:40:08,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:40:08,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-29 03:40:08,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2020-10-29 03:40:08,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-29 03:40:08,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 148 transitions. [2020-10-29 03:40:08,739 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 148 transitions. Word has length 137 [2020-10-29 03:40:08,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:08,740 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 148 transitions. [2020-10-29 03:40:08,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:40:08,740 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 148 transitions. [2020-10-29 03:40:08,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 03:40:08,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:08,742 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:08,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:40:08,744 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:08,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:08,744 INFO L82 PathProgramCache]: Analyzing trace with hash -477015386, now seen corresponding path program 23 times [2020-10-29 03:40:08,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:08,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788243240] [2020-10-29 03:40:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:08,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:08,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:12,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:13,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:13,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 03:40:13,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:40:13,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 03:40:13,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:13,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:13,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:40:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 03:40:13,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:40:13,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:14,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:14,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:14,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:14,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:14,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:14,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:14,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:14,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:14,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:14,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:14,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:14,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:14,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-29 03:40:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:14,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:14,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:40:14,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:14,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:40:14,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:14,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:14,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:14,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:40:14,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:14,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1338 backedges. 2 proven. 529 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2020-10-29 03:40:14,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788243240] [2020-10-29 03:40:14,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:14,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:40:14,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388992733] [2020-10-29 03:40:14,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:40:14,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:14,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:40:14,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:40:14,258 INFO L87 Difference]: Start difference. First operand 145 states and 148 transitions. Second operand 27 states. [2020-10-29 03:40:14,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:14,661 INFO L93 Difference]: Finished difference Result 267 states and 275 transitions. [2020-10-29 03:40:14,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:40:14,661 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 142 [2020-10-29 03:40:14,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:14,663 INFO L225 Difference]: With dead ends: 267 [2020-10-29 03:40:14,663 INFO L226 Difference]: Without dead ends: 152 [2020-10-29 03:40:14,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:40:14,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-29 03:40:14,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2020-10-29 03:40:14,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-29 03:40:14,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2020-10-29 03:40:14,675 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 142 [2020-10-29 03:40:14,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:14,675 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2020-10-29 03:40:14,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:40:14,675 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2020-10-29 03:40:14,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-29 03:40:14,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:14,677 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:14,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:40:14,678 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:14,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:14,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1455249520, now seen corresponding path program 24 times [2020-10-29 03:40:14,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:14,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000159608] [2020-10-29 03:40:14,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:14,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:14,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:19,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:19,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:19,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 03:40:19,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:40:19,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5171 [2020-10-29 03:40:19,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:19,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:40:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-29 03:40:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:40:19,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:20,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:20,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:20,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:20,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:20,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:20,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:40:20,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:20,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:20,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:20,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:20,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:20,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:20,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 03:40:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:20,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:20,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:20,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:40:20,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:20,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:40:20,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:20,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:40:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:20,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:20,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1456 backedges. 2 proven. 576 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked. [2020-10-29 03:40:20,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000159608] [2020-10-29 03:40:20,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:20,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:40:20,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195426545] [2020-10-29 03:40:20,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:40:20,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:20,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:40:20,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:40:20,357 INFO L87 Difference]: Start difference. First operand 150 states and 153 transitions. Second operand 28 states. [2020-10-29 03:40:20,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:20,714 INFO L93 Difference]: Finished difference Result 276 states and 284 transitions. [2020-10-29 03:40:20,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:40:20,715 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 147 [2020-10-29 03:40:20,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:20,716 INFO L225 Difference]: With dead ends: 276 [2020-10-29 03:40:20,716 INFO L226 Difference]: Without dead ends: 157 [2020-10-29 03:40:20,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 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 03:40:20,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-29 03:40:20,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2020-10-29 03:40:20,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-29 03:40:20,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 158 transitions. [2020-10-29 03:40:20,732 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 158 transitions. Word has length 147 [2020-10-29 03:40:20,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:20,732 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 158 transitions. [2020-10-29 03:40:20,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:40:20,733 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 158 transitions. [2020-10-29 03:40:20,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 03:40:20,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:20,735 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:20,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:40:20,735 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:20,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:20,736 INFO L82 PathProgramCache]: Analyzing trace with hash -313233186, now seen corresponding path program 25 times [2020-10-29 03:40:20,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:20,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946711663] [2020-10-29 03:40:20,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:20,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:20,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:25,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:25,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 03:40:25,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:40:25,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-29 03:40:25,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:25,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:25,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:40:25,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 03:40:25,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:40:25,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:26,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:26,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:26,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:26,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:26,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:26,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:26,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:26,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:26,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:26,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-29 03:40:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:26,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:26,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:26,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:40:26,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:26,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:40:26,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:26,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:26,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:40:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:26,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 2 proven. 625 refuted. 0 times theorem prover too weak. 952 trivial. 0 not checked. [2020-10-29 03:40:26,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946711663] [2020-10-29 03:40:26,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:26,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:40:26,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932202804] [2020-10-29 03:40:26,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:40:26,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:26,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:40:26,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:40:26,361 INFO L87 Difference]: Start difference. First operand 155 states and 158 transitions. Second operand 29 states. [2020-10-29 03:40:26,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:26,765 INFO L93 Difference]: Finished difference Result 285 states and 293 transitions. [2020-10-29 03:40:26,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:40:26,766 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 152 [2020-10-29 03:40:26,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:26,768 INFO L225 Difference]: With dead ends: 285 [2020-10-29 03:40:26,768 INFO L226 Difference]: Without dead ends: 162 [2020-10-29 03:40:26,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:40:26,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-29 03:40:26,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2020-10-29 03:40:26,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-29 03:40:26,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 163 transitions. [2020-10-29 03:40:26,781 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 163 transitions. Word has length 152 [2020-10-29 03:40:26,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:26,781 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 163 transitions. [2020-10-29 03:40:26,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:40:26,781 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 163 transitions. [2020-10-29 03:40:26,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 03:40:26,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:26,783 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:26,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:40:26,783 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:26,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:26,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1240201144, now seen corresponding path program 26 times [2020-10-29 03:40:26,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:26,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93089246] [2020-10-29 03:40:26,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:26,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:26,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:31,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:31,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 03:40:31,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:40:31,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-29 03:40:31,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:31,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:40:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 03:40:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:40:31,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:32,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:32,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:32,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:32,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:32,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:32,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:32,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:32,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:32,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:32,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-29 03:40:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:32,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:32,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:32,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:40:32,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:32,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:40:32,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:32,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:40:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:32,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:40:32,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1707 backedges. 2 proven. 676 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2020-10-29 03:40:32,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93089246] [2020-10-29 03:40:32,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:32,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:40:32,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704128717] [2020-10-29 03:40:32,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:40:32,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:32,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:40:32,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:40:32,480 INFO L87 Difference]: Start difference. First operand 160 states and 163 transitions. Second operand 30 states. [2020-10-29 03:40:32,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:32,976 INFO L93 Difference]: Finished difference Result 294 states and 302 transitions. [2020-10-29 03:40:32,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:40:32,977 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 157 [2020-10-29 03:40:32,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:32,979 INFO L225 Difference]: With dead ends: 294 [2020-10-29 03:40:32,979 INFO L226 Difference]: Without dead ends: 167 [2020-10-29 03:40:32,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:40:32,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-29 03:40:32,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2020-10-29 03:40:32,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-29 03:40:32,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 168 transitions. [2020-10-29 03:40:32,997 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 168 transitions. Word has length 157 [2020-10-29 03:40:32,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:32,998 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 168 transitions. [2020-10-29 03:40:32,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:40:32,998 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 168 transitions. [2020-10-29 03:40:33,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-29 03:40:33,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:33,000 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:33,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:40:33,000 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:33,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:33,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1492477718, now seen corresponding path program 27 times [2020-10-29 03:40:33,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:33,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986627639] [2020-10-29 03:40:33,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:33,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:33,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:33,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:38,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:38,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 03:40:38,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:40:38,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-29 03:40:38,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:38,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:38,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:40:38,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 03:40:38,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:40:38,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:38,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:38,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:38,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:38,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:38,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:38,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:40:38,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:38,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:38,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:38,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:38,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:38,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:40:38,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-29 03:40:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:38,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:38,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:38,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:40:38,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:38,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:40:38,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:38,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:40:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:38,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:38,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 2 proven. 729 refuted. 0 times theorem prover too weak. 1109 trivial. 0 not checked. [2020-10-29 03:40:38,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986627639] [2020-10-29 03:40:38,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:38,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:40:38,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661764830] [2020-10-29 03:40:38,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:40:38,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:38,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:40:38,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:40:38,724 INFO L87 Difference]: Start difference. First operand 165 states and 168 transitions. Second operand 31 states. [2020-10-29 03:40:39,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:39,202 INFO L93 Difference]: Finished difference Result 303 states and 311 transitions. [2020-10-29 03:40:39,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:40:39,203 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 162 [2020-10-29 03:40:39,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:39,205 INFO L225 Difference]: With dead ends: 303 [2020-10-29 03:40:39,205 INFO L226 Difference]: Without dead ends: 172 [2020-10-29 03:40:39,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:40:39,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-29 03:40:39,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2020-10-29 03:40:39,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-29 03:40:39,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 173 transitions. [2020-10-29 03:40:39,224 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 173 transitions. Word has length 162 [2020-10-29 03:40:39,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:39,225 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 173 transitions. [2020-10-29 03:40:39,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:40:39,225 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 173 transitions. [2020-10-29 03:40:39,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-29 03:40:39,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:39,226 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:39,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:40:39,226 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:39,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:39,227 INFO L82 PathProgramCache]: Analyzing trace with hash -817159936, now seen corresponding path program 28 times [2020-10-29 03:40:39,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:39,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867632631] [2020-10-29 03:40:39,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:39,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:39,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:39,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:44,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:44,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 03:40:44,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:40:44,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:40:44,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:44,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:44,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:40:44,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 03:40:44,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:40:44,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:44,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:44,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:44,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:44,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:44,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:44,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:40:44,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:44,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:44,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:44,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:44,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:44,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:44,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 03:40:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:44,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:44,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:44,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:40:44,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:44,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:40:44,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:44,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:44,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:44,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:40:44,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:44,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1978 backedges. 2 proven. 784 refuted. 0 times theorem prover too weak. 1192 trivial. 0 not checked. [2020-10-29 03:40:44,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867632631] [2020-10-29 03:40:44,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:44,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:40:44,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217508016] [2020-10-29 03:40:44,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:40:44,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:44,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:40:44,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:40:44,872 INFO L87 Difference]: Start difference. First operand 170 states and 173 transitions. Second operand 32 states. [2020-10-29 03:40:45,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:45,410 INFO L93 Difference]: Finished difference Result 312 states and 320 transitions. [2020-10-29 03:40:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:40:45,410 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 167 [2020-10-29 03:40:45,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:45,412 INFO L225 Difference]: With dead ends: 312 [2020-10-29 03:40:45,413 INFO L226 Difference]: Without dead ends: 177 [2020-10-29 03:40:45,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:40:45,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-29 03:40:45,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2020-10-29 03:40:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-29 03:40:45,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 178 transitions. [2020-10-29 03:40:45,425 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 178 transitions. Word has length 167 [2020-10-29 03:40:45,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:45,426 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 178 transitions. [2020-10-29 03:40:45,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:40:45,426 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 178 transitions. [2020-10-29 03:40:45,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 03:40:45,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:45,427 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:45,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:40:45,427 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:45,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:45,428 INFO L82 PathProgramCache]: Analyzing trace with hash -709348018, now seen corresponding path program 29 times [2020-10-29 03:40:45,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:45,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116842317] [2020-10-29 03:40:45,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:45,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:45,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:45,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:50,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:50,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 03:40:50,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:40:50,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5171 [2020-10-29 03:40:50,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:50,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:40:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 03:40:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:40:50,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:51,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:51,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:51,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:51,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:51,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:51,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:51,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:51,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:51,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-29 03:40:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:51,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:51,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:51,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:40:51,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:51,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:40:51,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:51,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:51,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:51,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:40:51,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:51,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2121 backedges. 2 proven. 841 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2020-10-29 03:40:51,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116842317] [2020-10-29 03:40:51,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:51,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:40:51,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038259759] [2020-10-29 03:40:51,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:40:51,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:51,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:40:51,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:40:51,272 INFO L87 Difference]: Start difference. First operand 175 states and 178 transitions. Second operand 33 states. [2020-10-29 03:40:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:51,774 INFO L93 Difference]: Finished difference Result 321 states and 329 transitions. [2020-10-29 03:40:51,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:40:51,775 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 172 [2020-10-29 03:40:51,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:51,776 INFO L225 Difference]: With dead ends: 321 [2020-10-29 03:40:51,776 INFO L226 Difference]: Without dead ends: 182 [2020-10-29 03:40:51,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:40:51,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-29 03:40:51,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2020-10-29 03:40:51,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-29 03:40:51,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 183 transitions. [2020-10-29 03:40:51,787 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 183 transitions. Word has length 172 [2020-10-29 03:40:51,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:51,788 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 183 transitions. [2020-10-29 03:40:51,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:40:51,788 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 183 transitions. [2020-10-29 03:40:51,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-29 03:40:51,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:51,789 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:51,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:40:51,789 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:51,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:51,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1496059464, now seen corresponding path program 30 times [2020-10-29 03:40:51,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:51,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268137930] [2020-10-29 03:40:51,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:51,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:51,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:58,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:58,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 03:40:58,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:40:58,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6585 [2020-10-29 03:40:58,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:58,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:40:58,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 03:40:58,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:40:58,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:59,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:59,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:59,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:59,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:59,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:59,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:59,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:59,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-29 03:40:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:59,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:59,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:59,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:40:59,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:59,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:40:59,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:59,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:40:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:59,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:59,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2269 backedges. 2 proven. 900 refuted. 0 times theorem prover too weak. 1367 trivial. 0 not checked. [2020-10-29 03:40:59,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268137930] [2020-10-29 03:40:59,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:59,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:40:59,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399314600] [2020-10-29 03:40:59,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:40:59,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:59,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:40:59,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:40:59,062 INFO L87 Difference]: Start difference. First operand 180 states and 183 transitions. Second operand 34 states. [2020-10-29 03:40:59,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:59,575 INFO L93 Difference]: Finished difference Result 330 states and 338 transitions. [2020-10-29 03:40:59,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:40:59,576 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 177 [2020-10-29 03:40:59,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:59,578 INFO L225 Difference]: With dead ends: 330 [2020-10-29 03:40:59,578 INFO L226 Difference]: Without dead ends: 187 [2020-10-29 03:40:59,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:40:59,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-29 03:40:59,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2020-10-29 03:40:59,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-29 03:40:59,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 188 transitions. [2020-10-29 03:40:59,590 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 188 transitions. Word has length 177 [2020-10-29 03:40:59,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:59,591 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 188 transitions. [2020-10-29 03:40:59,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:40:59,591 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 188 transitions. [2020-10-29 03:40:59,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-29 03:40:59,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:59,592 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:59,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:40:59,593 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:59,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:59,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1813980282, now seen corresponding path program 31 times [2020-10-29 03:40:59,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:59,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791384376] [2020-10-29 03:40:59,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:59,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:59,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:04,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:04,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 03:41:04,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:41:04,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:41:04,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:04,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:04,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:41:04,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 03:41:04,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:41:04,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:05,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:05,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:05,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:05,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:05,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:05,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:41:05,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:05,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:05,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-29 03:41:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:05,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:05,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:05,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:41:05,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:05,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:41:05,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:05,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:41:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:05,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2422 backedges. 2 proven. 961 refuted. 0 times theorem prover too weak. 1459 trivial. 0 not checked. [2020-10-29 03:41:05,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791384376] [2020-10-29 03:41:05,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:05,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:41:05,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612851480] [2020-10-29 03:41:05,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:41:05,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:05,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:41:05,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:41:05,380 INFO L87 Difference]: Start difference. First operand 185 states and 188 transitions. Second operand 35 states. [2020-10-29 03:41:05,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:05,919 INFO L93 Difference]: Finished difference Result 339 states and 347 transitions. [2020-10-29 03:41:05,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:41:05,919 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 182 [2020-10-29 03:41:05,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:05,921 INFO L225 Difference]: With dead ends: 339 [2020-10-29 03:41:05,921 INFO L226 Difference]: Without dead ends: 192 [2020-10-29 03:41:05,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:41:05,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-29 03:41:05,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2020-10-29 03:41:05,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-29 03:41:05,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 193 transitions. [2020-10-29 03:41:05,948 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 193 transitions. Word has length 182 [2020-10-29 03:41:05,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:05,949 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 193 transitions. [2020-10-29 03:41:05,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:41:05,949 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 193 transitions. [2020-10-29 03:41:05,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-29 03:41:05,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:05,951 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:05,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:41:05,951 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:05,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:05,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1033534064, now seen corresponding path program 32 times [2020-10-29 03:41:05,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:05,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130994918] [2020-10-29 03:41:05,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:06,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:06,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:11,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:11,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-29 03:41:11,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:41:11,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5407 [2020-10-29 03:41:11,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:11,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:11,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:41:11,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 03:41:11,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:41:11,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:12,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:12,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:12,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:12,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:12,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:12,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:41:12,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:12,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:12,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:12,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-29 03:41:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:12,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:12,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:12,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:41:12,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:12,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:41:12,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:12,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:41:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:12,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 2 proven. 1024 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2020-10-29 03:41:12,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130994918] [2020-10-29 03:41:12,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:12,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:41:12,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425307157] [2020-10-29 03:41:12,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:41:12,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:12,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:41:12,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:41:12,128 INFO L87 Difference]: Start difference. First operand 190 states and 193 transitions. Second operand 36 states. [2020-10-29 03:41:12,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:12,677 INFO L93 Difference]: Finished difference Result 348 states and 356 transitions. [2020-10-29 03:41:12,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:41:12,677 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 187 [2020-10-29 03:41:12,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:12,679 INFO L225 Difference]: With dead ends: 348 [2020-10-29 03:41:12,679 INFO L226 Difference]: Without dead ends: 197 [2020-10-29 03:41:12,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:41:12,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-29 03:41:12,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 195. [2020-10-29 03:41:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-29 03:41:12,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 198 transitions. [2020-10-29 03:41:12,692 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 198 transitions. Word has length 187 [2020-10-29 03:41:12,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:12,693 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 198 transitions. [2020-10-29 03:41:12,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:41:12,693 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 198 transitions. [2020-10-29 03:41:12,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-29 03:41:12,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:12,694 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:12,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:41:12,694 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:12,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:12,695 INFO L82 PathProgramCache]: Analyzing trace with hash 78862782, now seen corresponding path program 33 times [2020-10-29 03:41:12,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:12,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560700231] [2020-10-29 03:41:12,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:12,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:13,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:18,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:18,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 03:41:18,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:41:18,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5273 [2020-10-29 03:41:18,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:18,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:18,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:41:18,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 03:41:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 03:41:18,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:18,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:18,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:18,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:18,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:18,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:18,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:41:18,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:18,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:18,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:18,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-29 03:41:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:18,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:18,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:18,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:41:18,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:18,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:41:18,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:18,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:18,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:18,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:41:18,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:18,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2743 backedges. 2 proven. 1089 refuted. 0 times theorem prover too weak. 1652 trivial. 0 not checked. [2020-10-29 03:41:18,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560700231] [2020-10-29 03:41:18,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:18,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:41:18,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699790001] [2020-10-29 03:41:18,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:41:18,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:18,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:41:18,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:41:18,753 INFO L87 Difference]: Start difference. First operand 195 states and 198 transitions. Second operand 37 states. [2020-10-29 03:41:19,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:19,263 INFO L93 Difference]: Finished difference Result 357 states and 365 transitions. [2020-10-29 03:41:19,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:41:19,264 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 192 [2020-10-29 03:41:19,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:19,266 INFO L225 Difference]: With dead ends: 357 [2020-10-29 03:41:19,266 INFO L226 Difference]: Without dead ends: 202 [2020-10-29 03:41:19,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:41:19,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-29 03:41:19,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2020-10-29 03:41:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-29 03:41:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 203 transitions. [2020-10-29 03:41:19,280 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 203 transitions. Word has length 192 [2020-10-29 03:41:19,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:19,280 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 203 transitions. [2020-10-29 03:41:19,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:41:19,280 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 203 transitions. [2020-10-29 03:41:19,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-29 03:41:19,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:19,281 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:19,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:41:19,282 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:19,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:19,282 INFO L82 PathProgramCache]: Analyzing trace with hash 596294440, now seen corresponding path program 34 times [2020-10-29 03:41:19,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:19,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162637516] [2020-10-29 03:41:19,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:19,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:19,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:24,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:24,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-29 03:41:24,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:41:24,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5145 [2020-10-29 03:41:24,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:24,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:41:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 03:41:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 03:41:24,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:25,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:25,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:25,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:25,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:25,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:25,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:41:25,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:25,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:25,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:25,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:25,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:25,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:25,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-29 03:41:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:25,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:25,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:25,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:41:25,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:25,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:41:25,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:25,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:41:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:25,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2911 backedges. 2 proven. 1156 refuted. 0 times theorem prover too weak. 1753 trivial. 0 not checked. [2020-10-29 03:41:25,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162637516] [2020-10-29 03:41:25,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:25,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:41:25,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200207827] [2020-10-29 03:41:25,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:41:25,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:25,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:41:25,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:41:25,311 INFO L87 Difference]: Start difference. First operand 200 states and 203 transitions. Second operand 38 states. [2020-10-29 03:41:25,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:25,918 INFO L93 Difference]: Finished difference Result 366 states and 374 transitions. [2020-10-29 03:41:25,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:41:25,919 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 197 [2020-10-29 03:41:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:25,920 INFO L225 Difference]: With dead ends: 366 [2020-10-29 03:41:25,920 INFO L226 Difference]: Without dead ends: 207 [2020-10-29 03:41:25,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:41:25,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-29 03:41:25,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-10-29 03:41:25,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-29 03:41:25,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 208 transitions. [2020-10-29 03:41:25,951 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 208 transitions. Word has length 197 [2020-10-29 03:41:25,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:25,951 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 208 transitions. [2020-10-29 03:41:25,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:41:25,951 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 208 transitions. [2020-10-29 03:41:25,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 03:41:25,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:25,956 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:25,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:41:25,956 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:25,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:25,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1703694346, now seen corresponding path program 35 times [2020-10-29 03:41:25,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:25,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329105241] [2020-10-29 03:41:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:26,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:26,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:31,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:31,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-29 03:41:31,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:41:31,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5256 [2020-10-29 03:41:31,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:31,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 03:41:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 03:41:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 03:41:31,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:32,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:32,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:32,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:32,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:32,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:32,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:41:32,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:32,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:32,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:32,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-29 03:41:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:32,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:32,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:32,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:41:32,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:32,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:41:32,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:32,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:32,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:32,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:41:32,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:32,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3084 backedges. 2 proven. 1225 refuted. 0 times theorem prover too weak. 1857 trivial. 0 not checked. [2020-10-29 03:41:32,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329105241] [2020-10-29 03:41:32,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:32,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 03:41:32,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348769953] [2020-10-29 03:41:32,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 03:41:32,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:32,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 03:41:32,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:41:32,115 INFO L87 Difference]: Start difference. First operand 205 states and 208 transitions. Second operand 39 states. [2020-10-29 03:41:32,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:32,619 INFO L93 Difference]: Finished difference Result 375 states and 383 transitions. [2020-10-29 03:41:32,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:41:32,620 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 202 [2020-10-29 03:41:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:32,621 INFO L225 Difference]: With dead ends: 375 [2020-10-29 03:41:32,621 INFO L226 Difference]: Without dead ends: 212 [2020-10-29 03:41:32,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:41:32,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-29 03:41:32,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2020-10-29 03:41:32,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-29 03:41:32,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 213 transitions. [2020-10-29 03:41:32,636 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 213 transitions. Word has length 202 [2020-10-29 03:41:32,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:32,636 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 213 transitions. [2020-10-29 03:41:32,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-29 03:41:32,637 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 213 transitions. [2020-10-29 03:41:32,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-29 03:41:32,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:32,638 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:32,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:41:32,639 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:32,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:32,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1215253536, now seen corresponding path program 36 times [2020-10-29 03:41:32,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:32,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809550315] [2020-10-29 03:41:32,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:32,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:32,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:37,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:37,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 03:41:37,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:41:37,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:41:37,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:37,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 03:41:37,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 03:41:37,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 03:41:37,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:38,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:38,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:38,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:38,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:38,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:38,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:41:38,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:38,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:38,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:38,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-29 03:41:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:38,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:38,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:38,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:41:38,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:38,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:41:38,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:38,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:41:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:38,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3262 backedges. 2 proven. 1296 refuted. 0 times theorem prover too weak. 1964 trivial. 0 not checked. [2020-10-29 03:41:38,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809550315] [2020-10-29 03:41:38,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:38,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 03:41:38,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969405653] [2020-10-29 03:41:38,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 03:41:38,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:38,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 03:41:38,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:41:38,596 INFO L87 Difference]: Start difference. First operand 210 states and 213 transitions. Second operand 40 states. [2020-10-29 03:41:39,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:39,100 INFO L93 Difference]: Finished difference Result 384 states and 392 transitions. [2020-10-29 03:41:39,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 03:41:39,101 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 207 [2020-10-29 03:41:39,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:39,103 INFO L225 Difference]: With dead ends: 384 [2020-10-29 03:41:39,103 INFO L226 Difference]: Without dead ends: 217 [2020-10-29 03:41:39,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:41:39,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-29 03:41:39,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2020-10-29 03:41:39,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-29 03:41:39,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 218 transitions. [2020-10-29 03:41:39,118 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 218 transitions. Word has length 207 [2020-10-29 03:41:39,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:39,118 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 218 transitions. [2020-10-29 03:41:39,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 03:41:39,118 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 218 transitions. [2020-10-29 03:41:39,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-29 03:41:39,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:39,120 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:39,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 03:41:39,120 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:39,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:39,121 INFO L82 PathProgramCache]: Analyzing trace with hash -2006589906, now seen corresponding path program 37 times [2020-10-29 03:41:39,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:39,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778658179] [2020-10-29 03:41:39,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:39,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:39,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:44,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:44,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 03:41:44,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:41:44,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 03:41:44,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:44,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-29 03:41:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-29 03:41:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 03:41:44,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:45,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:45,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:45,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:45,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:45,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:45,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:41:45,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:45,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:45,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:45,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-29 03:41:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:45,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:45,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:45,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:41:45,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:45,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:41:45,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:45,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:45,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:45,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:41:45,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:45,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3445 backedges. 2 proven. 1369 refuted. 0 times theorem prover too weak. 2074 trivial. 0 not checked. [2020-10-29 03:41:45,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778658179] [2020-10-29 03:41:45,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:45,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-29 03:41:45,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980562985] [2020-10-29 03:41:45,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-29 03:41:45,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:45,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-29 03:41:45,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:41:45,160 INFO L87 Difference]: Start difference. First operand 215 states and 218 transitions. Second operand 41 states. [2020-10-29 03:41:45,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:45,787 INFO L93 Difference]: Finished difference Result 393 states and 401 transitions. [2020-10-29 03:41:45,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 03:41:45,787 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 212 [2020-10-29 03:41:45,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:45,789 INFO L225 Difference]: With dead ends: 393 [2020-10-29 03:41:45,789 INFO L226 Difference]: Without dead ends: 222 [2020-10-29 03:41:45,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:41:45,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-29 03:41:45,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2020-10-29 03:41:45,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-29 03:41:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 223 transitions. [2020-10-29 03:41:45,802 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 223 transitions. Word has length 212 [2020-10-29 03:41:45,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:45,803 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 223 transitions. [2020-10-29 03:41:45,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-29 03:41:45,803 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 223 transitions. [2020-10-29 03:41:45,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 03:41:45,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:45,804 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:45,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 03:41:45,804 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:45,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:45,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1738040472, now seen corresponding path program 38 times [2020-10-29 03:41:45,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:45,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228579116] [2020-10-29 03:41:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:45,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:46,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:51,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:51,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-29 03:41:51,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:41:51,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5293 [2020-10-29 03:41:51,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:51,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-29 03:41:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 03:41:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 03:41:51,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:52,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:52,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:52,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:52,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:52,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:52,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:41:52,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:52,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:52,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:52,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:52,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:52,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:52,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-29 03:41:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:52,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:52,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:41:52,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:41:52,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:52,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:41:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3633 backedges. 2 proven. 1444 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2020-10-29 03:41:52,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228579116] [2020-10-29 03:41:52,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:52,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 03:41:52,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046427959] [2020-10-29 03:41:52,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 03:41:52,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:52,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 03:41:52,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:41:52,144 INFO L87 Difference]: Start difference. First operand 220 states and 223 transitions. Second operand 42 states. [2020-10-29 03:41:52,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:52,703 INFO L93 Difference]: Finished difference Result 402 states and 410 transitions. [2020-10-29 03:41:52,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 03:41:52,704 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 217 [2020-10-29 03:41:52,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:52,705 INFO L225 Difference]: With dead ends: 402 [2020-10-29 03:41:52,705 INFO L226 Difference]: Without dead ends: 227 [2020-10-29 03:41:52,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:41:52,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-29 03:41:52,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2020-10-29 03:41:52,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-29 03:41:52,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 228 transitions. [2020-10-29 03:41:52,720 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 228 transitions. Word has length 217 [2020-10-29 03:41:52,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:52,721 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 228 transitions. [2020-10-29 03:41:52,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 03:41:52,721 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 228 transitions. [2020-10-29 03:41:52,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-29 03:41:52,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:52,723 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:52,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 03:41:52,723 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:52,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:52,724 INFO L82 PathProgramCache]: Analyzing trace with hash -2100435866, now seen corresponding path program 39 times [2020-10-29 03:41:52,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:52,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617949197] [2020-10-29 03:41:52,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:52,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:52,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking...