/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/reducercommutativity/sep.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:16:34,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:16:34,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:16:34,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:16:34,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:16:34,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:16:34,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:16:34,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:16:34,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:16:34,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:16:34,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:16:34,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:16:34,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:16:34,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:16:34,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:16:34,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:16:34,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:16:34,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:16:34,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:16:34,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:16:34,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:16:34,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:16:34,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:16:34,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:16:34,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:16:34,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:16:34,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:16:34,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:16:34,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:16:34,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:16:34,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:16:34,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:16:34,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:16:34,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:16:34,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:16:34,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:16:34,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:16:34,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:16:34,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:16:34,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:16:34,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:16:34,859 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 12:16:34,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:16:34,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:16:34,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:16:34,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:16:34,910 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:16:34,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:16:34,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:16:34,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:16:34,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:16:34,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:16:34,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:16:34,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:16:34,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:16:34,913 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:16:34,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:16:34,913 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:16:34,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:16:34,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:16:34,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:16:34,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:16:34,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:16:34,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:16:34,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:16:34,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:16:34,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:16:34,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:16:34,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:16:34,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:16:34,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:16:34,916 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:16:35,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:16:35,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:16:35,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:16:35,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:16:35,433 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:16:35,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep.i [2020-10-29 12:16:35,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d24b19e8a/9a09f2210e624fae98a5a09cebe20334/FLAGe9ed80c13 [2020-10-29 12:16:36,082 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:16:36,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep.i [2020-10-29 12:16:36,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d24b19e8a/9a09f2210e624fae98a5a09cebe20334/FLAGe9ed80c13 [2020-10-29 12:16:36,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d24b19e8a/9a09f2210e624fae98a5a09cebe20334 [2020-10-29 12:16:36,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:16:36,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:16:36,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:16:36,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:16:36,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:16:36,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:16:36" (1/1) ... [2020-10-29 12:16:36,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e6033c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:36, skipping insertion in model container [2020-10-29 12:16:36,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:16:36" (1/1) ... [2020-10-29 12:16:36,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:16:36,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:16:36,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:16:36,688 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:16:36,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:16:36,738 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:16:36,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:36 WrapperNode [2020-10-29 12:16:36,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:16:36,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:16:36,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:16:36,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:16:36,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:36" (1/1) ... [2020-10-29 12:16:36,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:36" (1/1) ... [2020-10-29 12:16:36,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:36" (1/1) ... [2020-10-29 12:16:36,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:36" (1/1) ... [2020-10-29 12:16:36,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:36" (1/1) ... [2020-10-29 12:16:36,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:36" (1/1) ... [2020-10-29 12:16:36,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:36" (1/1) ... [2020-10-29 12:16:36,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:16:36,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:16:36,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:16:36,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:16:36,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:36" (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 12:16:36,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:16:36,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:16:36,927 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:16:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-29 12:16:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:16:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:16:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:16:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 12:16:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 12:16:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:16:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:16:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 12:16:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-29 12:16:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:16:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:16:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:16:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:16:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:16:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:16:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:16:37,313 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:16:37,314 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 12:16:37,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:16:37 BoogieIcfgContainer [2020-10-29 12:16:37,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:16:37,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:16:37,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:16:37,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:16:37,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:16:36" (1/3) ... [2020-10-29 12:16:37,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1140515f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:16:37, skipping insertion in model container [2020-10-29 12:16:37,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:36" (2/3) ... [2020-10-29 12:16:37,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1140515f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:16:37, skipping insertion in model container [2020-10-29 12:16:37,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:16:37" (3/3) ... [2020-10-29 12:16:37,327 INFO L111 eAbstractionObserver]: Analyzing ICFG sep.i [2020-10-29 12:16:37,341 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:16:37,347 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:16:37,364 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:16:37,401 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:16:37,401 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:16:37,401 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:16:37,401 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:16:37,402 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:16:37,402 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:16:37,405 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:16:37,405 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:16:37,446 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-29 12:16:37,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 12:16:37,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:37,464 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 12:16:37,465 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:37,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:37,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1183157407, now seen corresponding path program 1 times [2020-10-29 12:16:37,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:37,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888556743] [2020-10-29 12:16:37,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:37,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:37,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:37,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:38,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:39,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:39,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:16:39,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:16:39,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2139 [2020-10-29 12:16:39,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:39,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:16:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 12:16:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:16:39,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:16:40,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:40,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:40,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:40,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:40,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:40,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:16:40,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:40,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:40,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:40,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:40,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:40,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:40,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:40,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:40,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:40,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:16:40,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:40,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:16:40,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:40,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 12:16:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:40,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:40,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:40,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:40,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:40,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:40,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:16:40,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:40,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:40,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:40,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:40,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:16:40,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:40,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:16:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:40,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:40,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:40,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:40,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:40,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:40,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:16:40,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:40,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:40,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:40,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:16:40,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:40,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:40,179 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 12:16:40,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888556743] [2020-10-29 12:16:40,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:16:40,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:16:40,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417493128] [2020-10-29 12:16:40,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:16:40,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:40,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:16:40,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:16:40,225 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 5 states. [2020-10-29 12:16:40,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:40,442 INFO L93 Difference]: Finished difference Result 68 states and 89 transitions. [2020-10-29 12:16:40,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:16:40,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-29 12:16:40,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:40,453 INFO L225 Difference]: With dead ends: 68 [2020-10-29 12:16:40,454 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 12:16:40,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:16:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 12:16:40,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-29 12:16:40,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 12:16:40,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-29 12:16:40,506 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-29 12:16:40,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:40,507 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-29 12:16:40,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:16:40,507 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-29 12:16:40,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 12:16:40,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:40,510 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 12:16:40,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:16:40,510 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:40,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:40,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1929385714, now seen corresponding path program 1 times [2020-10-29 12:16:40,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:40,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003718892] [2020-10-29 12:16:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:40,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:40,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:40,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:40,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:41,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:43,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:43,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:16:43,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:16:43,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2524 [2020-10-29 12:16:43,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:43,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:16:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 12:16:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:16:43,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:43,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:43,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:43,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:43,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:43,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:43,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:16:43,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:43,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:43,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:43,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:43,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:43,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:43,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:43,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:43,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:43,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:16:43,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:43,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:16:43,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:43,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 12:16:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:43,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:43,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:43,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:43,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:43,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:43,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:16:43,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:43,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:16:43,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:43,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 12:16:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:43,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:43,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:43,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:43,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:43,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:16:43,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:43,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:43,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:16:43,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:16:43,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:43,244 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 12:16:43,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003718892] [2020-10-29 12:16:43,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:16:43,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:16:43,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932659553] [2020-10-29 12:16:43,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:16:43,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:43,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:16:43,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:16:43,252 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-29 12:16:43,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:43,609 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2020-10-29 12:16:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:16:43,610 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-29 12:16:43,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:43,612 INFO L225 Difference]: With dead ends: 53 [2020-10-29 12:16:43,612 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 12:16:43,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:16:43,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 12:16:43,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-29 12:16:43,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-29 12:16:43,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-29 12:16:43,633 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 36 [2020-10-29 12:16:43,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:43,634 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-29 12:16:43,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:16:43,634 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-29 12:16:43,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 12:16:43,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:43,636 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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 12:16:43,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:16:43,636 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:43,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:43,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1007941287, now seen corresponding path program 1 times [2020-10-29 12:16:43,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:43,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019076012] [2020-10-29 12:16:43,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:43,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:43,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:43,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:43,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:43,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:45,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:45,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:48,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:48,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 12:16:48,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:16:48,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:16:48,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:48,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:48,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:16:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 12:16:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 12:16:48,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:48,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:48,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:48,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:48,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:48,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:48,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:16:48,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:48,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:48,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:48,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:48,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:48,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:48,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:48,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:48,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:48,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:16:48,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:48,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 12:16:48,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:48,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:48,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:16:48,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:48,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:16:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:48,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:48,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:48,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:48,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:16:48,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:48,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 12:16:48,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:48,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:16:48,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:48,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:16:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:48,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:48,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:48,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:16:48,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:48,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:16:48,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:48,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:48,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:16:48,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:48,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:16:48,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 12:16:48,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019076012] [2020-10-29 12:16:48,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:48,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 12:16:48,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501258249] [2020-10-29 12:16:48,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:16:48,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:48,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:16:48,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:16:48,988 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-10-29 12:16:49,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:49,346 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2020-10-29 12:16:49,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:16:49,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-10-29 12:16:49,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:49,348 INFO L225 Difference]: With dead ends: 57 [2020-10-29 12:16:49,348 INFO L226 Difference]: Without dead ends: 35 [2020-10-29 12:16:49,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:16:49,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-29 12:16:49,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-10-29 12:16:49,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 12:16:49,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-29 12:16:49,370 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 45 [2020-10-29 12:16:49,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:49,370 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-29 12:16:49,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:16:49,371 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-29 12:16:49,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 12:16:49,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:49,377 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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 12:16:49,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:16:49,377 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:49,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:49,378 INFO L82 PathProgramCache]: Analyzing trace with hash 581389778, now seen corresponding path program 2 times [2020-10-29 12:16:49,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:49,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305248565] [2020-10-29 12:16:49,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:49,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:51,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:51,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 12:16:51,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:51,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1560 [2020-10-29 12:16:51,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:51,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:16:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:16:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:16:51,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:51,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:51,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:51,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:51,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:51,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:51,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:16:51,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:51,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:51,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:51,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:51,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:51,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:51,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:51,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:51,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:51,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:16:51,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:51,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 12:16:51,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:51,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:16:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:16:51,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:51,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:16:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:51,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:51,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:51,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:16:51,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:51,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 12:16:51,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:51,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:16:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:16:51,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 12:16:51,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 12:16:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:51,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:51,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:51,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:16:51,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:51,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 12:16:51,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:51,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:51,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:16:51,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:51,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:16:51,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-29 12:16:51,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305248565] [2020-10-29 12:16:51,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:51,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:16:51,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931621266] [2020-10-29 12:16:51,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:16:51,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:51,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:16:51,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:16:51,752 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 14 states. [2020-10-29 12:16:52,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:52,413 INFO L93 Difference]: Finished difference Result 79 states and 109 transitions. [2020-10-29 12:16:52,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:16:52,414 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-29 12:16:52,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:52,420 INFO L225 Difference]: With dead ends: 79 [2020-10-29 12:16:52,420 INFO L226 Difference]: Without dead ends: 73 [2020-10-29 12:16:52,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:16:52,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-29 12:16:52,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 55. [2020-10-29 12:16:52,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 12:16:52,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2020-10-29 12:16:52,454 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 54 [2020-10-29 12:16:52,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:52,454 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2020-10-29 12:16:52,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:16:52,455 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2020-10-29 12:16:52,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 12:16:52,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:52,459 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 1, 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 12:16:52,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:16:52,459 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:52,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:52,460 INFO L82 PathProgramCache]: Analyzing trace with hash -119674800, now seen corresponding path program 1 times [2020-10-29 12:16:52,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:52,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673486930] [2020-10-29 12:16:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:52,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:52,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:52,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:53,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:53,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:55,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:55,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:57,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:57,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 12:16:57,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:16:57,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 12:16:57,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:57,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:57,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:16:57,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:16:57,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 12:16:57,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:16:57,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:57,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:57,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:57,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:57,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:57,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:16:57,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:57,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:57,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:57,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:57,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:57,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:57,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:57,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:57,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:57,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:16:57,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:57,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 12:16:57,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:57,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:57,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:16:57,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:57,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:16:57,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:58,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:16:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:58,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:58,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:16:58,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:58,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 12:16:58,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:58,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:16:58,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:58,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 12:16:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:58,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:58,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:16:58,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:58,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 12:16:58,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:58,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:16:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:16:58,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 20 proven. 51 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 12:16:58,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673486930] [2020-10-29 12:16:58,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:58,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:16:58,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983967746] [2020-10-29 12:16:58,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:16:58,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:58,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:16:58,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:16:58,442 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand 17 states. [2020-10-29 12:17:00,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:00,854 INFO L93 Difference]: Finished difference Result 173 states and 249 transitions. [2020-10-29 12:17:00,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 12:17:00,856 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-29 12:17:00,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:00,864 INFO L225 Difference]: With dead ends: 173 [2020-10-29 12:17:00,865 INFO L226 Difference]: Without dead ends: 149 [2020-10-29 12:17:00,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 12:17:00,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-29 12:17:00,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 100. [2020-10-29 12:17:00,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 12:17:00,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 148 transitions. [2020-10-29 12:17:00,929 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 148 transitions. Word has length 54 [2020-10-29 12:17:00,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:00,929 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 148 transitions. [2020-10-29 12:17:00,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 12:17:00,930 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 148 transitions. [2020-10-29 12:17:00,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 12:17:00,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:00,940 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 1, 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 12:17:00,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:17:00,941 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:00,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:00,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1592507028, now seen corresponding path program 2 times [2020-10-29 12:17:00,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:00,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618917628] [2020-10-29 12:17:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:01,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:01,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:01,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:01,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:01,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:01,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:02,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:03,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:03,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:03,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:05,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:05,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:05,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:05,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:06,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:06,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 12:17:06,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 12:17:06,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 12:17:06,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:06,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:06,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:17:06,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:17:06,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 12:17:06,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:06,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:06,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:06,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:06,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:06,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:17:06,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:06,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:06,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:06,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:06,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:06,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:06,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:06,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:06,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:06,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:06,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:06,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 12:17:06,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:06,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:17:06,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:06,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:17:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:06,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:06,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:06,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:06,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:06,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:06,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 12:17:06,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:06,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:06,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:17:06,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:06,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:17:06,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:06,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 12:17:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:06,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:06,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:06,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:06,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:06,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 12:17:06,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:06,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:06,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:06,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:06,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:17:06,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:06,496 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 20 proven. 45 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 12:17:06,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618917628] [2020-10-29 12:17:06,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:06,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:17:06,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314513690] [2020-10-29 12:17:06,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:17:06,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:06,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:17:06,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:17:06,501 INFO L87 Difference]: Start difference. First operand 100 states and 148 transitions. Second operand 11 states. [2020-10-29 12:17:07,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:07,439 INFO L93 Difference]: Finished difference Result 182 states and 282 transitions. [2020-10-29 12:17:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:17:07,440 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-10-29 12:17:07,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:07,444 INFO L225 Difference]: With dead ends: 182 [2020-10-29 12:17:07,444 INFO L226 Difference]: Without dead ends: 158 [2020-10-29 12:17:07,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:17:07,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-29 12:17:07,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 142. [2020-10-29 12:17:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-29 12:17:07,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 232 transitions. [2020-10-29 12:17:07,527 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 232 transitions. Word has length 54 [2020-10-29 12:17:07,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:07,527 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 232 transitions. [2020-10-29 12:17:07,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:17:07,527 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 232 transitions. [2020-10-29 12:17:07,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 12:17:07,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:07,533 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 1, 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 12:17:07,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:17:07,534 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:07,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:07,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1090862868, now seen corresponding path program 3 times [2020-10-29 12:17:07,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:07,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462473324] [2020-10-29 12:17:07,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:07,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:07,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:07,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:08,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:08,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:08,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:08,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:08,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:09,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:09,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:09,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:09,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:12,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:12,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 12:17:12,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 12:17:12,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:17:12,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:12,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:12,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:17:12,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 12:17:12,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:17:12,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:12,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:12,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:12,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:12,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:12,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:12,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:17:12,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:12,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:12,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:12,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:12,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:12,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:12,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:12,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:12,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:17:12,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:12,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:12,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:12,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:12,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:12,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:12,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:17:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:12,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:12,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:12,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:12,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:12,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 12:17:12,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:12,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:12,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:17:12,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:12,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:17:12,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:12,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 12:17:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:12,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:12,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:12,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:12,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:12,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 12:17:12,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:12,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:12,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:12,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:12,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:17:12,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 12:17:13,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462473324] [2020-10-29 12:17:13,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:13,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:17:13,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971851251] [2020-10-29 12:17:13,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:17:13,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:13,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:17:13,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:17:13,006 INFO L87 Difference]: Start difference. First operand 142 states and 232 transitions. Second operand 14 states. [2020-10-29 12:17:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:14,522 INFO L93 Difference]: Finished difference Result 283 states and 436 transitions. [2020-10-29 12:17:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 12:17:14,525 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-29 12:17:14,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:14,530 INFO L225 Difference]: With dead ends: 283 [2020-10-29 12:17:14,530 INFO L226 Difference]: Without dead ends: 182 [2020-10-29 12:17:14,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:17:14,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-29 12:17:14,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 161. [2020-10-29 12:17:14,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-29 12:17:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 242 transitions. [2020-10-29 12:17:14,589 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 242 transitions. Word has length 54 [2020-10-29 12:17:14,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:14,590 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 242 transitions. [2020-10-29 12:17:14,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:17:14,590 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 242 transitions. [2020-10-29 12:17:14,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 12:17:14,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:14,595 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 1, 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 12:17:14,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:17:14,595 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:14,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:14,597 INFO L82 PathProgramCache]: Analyzing trace with hash -120210096, now seen corresponding path program 4 times [2020-10-29 12:17:14,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:14,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44453874] [2020-10-29 12:17:14,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:14,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:14,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:15,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:15,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:16,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:16,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:16,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:16,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:16,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:17,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:18,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:19,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:19,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 12:17:19,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:17:19,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:17:19,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:19,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:19,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:17:19,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:19,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:17:19,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:19,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:19,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:19,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:19,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:19,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:19,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:17:19,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:19,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:19,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:19,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:19,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:19,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:19,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:19,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:19,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 12:17:19,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:19,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:19,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:19,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:17:19,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:19,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:17:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:19,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:19,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:19,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:19,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:19,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:19,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 12:17:19,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:19,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:19,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:17:19,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:19,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:17:19,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:20,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 12:17:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:20,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:20,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:20,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:20,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:20,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:20,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 12:17:20,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:20,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:20,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:17:20,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:20,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:17:20,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 69 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 12:17:20,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44453874] [2020-10-29 12:17:20,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:20,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:17:20,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539185963] [2020-10-29 12:17:20,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:17:20,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:20,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:17:20,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:17:20,307 INFO L87 Difference]: Start difference. First operand 161 states and 242 transitions. Second operand 17 states. [2020-10-29 12:17:21,483 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-29 12:17:21,853 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-29 12:17:23,734 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-29 12:17:24,053 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-29 12:17:24,254 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-29 12:17:24,462 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-29 12:17:25,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:25,222 INFO L93 Difference]: Finished difference Result 569 states and 974 transitions. [2020-10-29 12:17:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-29 12:17:25,223 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-29 12:17:25,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:25,235 INFO L225 Difference]: With dead ends: 569 [2020-10-29 12:17:25,235 INFO L226 Difference]: Without dead ends: 420 [2020-10-29 12:17:25,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=654, Invalid=3006, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 12:17:25,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-10-29 12:17:25,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 344. [2020-10-29 12:17:25,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-10-29 12:17:25,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 546 transitions. [2020-10-29 12:17:25,329 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 546 transitions. Word has length 54 [2020-10-29 12:17:25,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:25,329 INFO L481 AbstractCegarLoop]: Abstraction has 344 states and 546 transitions. [2020-10-29 12:17:25,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 12:17:25,329 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 546 transitions. [2020-10-29 12:17:25,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 12:17:25,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:25,334 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 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 12:17:25,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:17:25,334 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:25,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:25,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1244921396, now seen corresponding path program 5 times [2020-10-29 12:17:25,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:25,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834256766] [2020-10-29 12:17:25,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:25,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:26,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:26,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 12:17:26,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:26,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-10-29 12:17:26,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:26,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:17:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:26,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:17:26,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:26,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:26,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:26,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:26,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:26,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:26,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:17:26,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:26,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:26,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:26,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:26,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:26,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:26,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:26,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:26,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 12:17:26,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:26,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:17:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:17:26,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:26,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:17:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:26,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:26,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:26,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:26,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:26,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 12:17:26,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:26,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:26,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:26,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:26,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:17:26,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:26,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 12:17:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:26,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:26,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:26,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:26,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:26,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 12:17:26,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:26,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:17:26,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 47 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 12:17:27,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834256766] [2020-10-29 12:17:27,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:27,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:17:27,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932153307] [2020-10-29 12:17:27,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:17:27,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:27,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:17:27,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:17:27,009 INFO L87 Difference]: Start difference. First operand 344 states and 546 transitions. Second operand 14 states. [2020-10-29 12:17:27,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:27,808 INFO L93 Difference]: Finished difference Result 575 states and 1092 transitions. [2020-10-29 12:17:27,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:17:27,809 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-29 12:17:27,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:27,820 INFO L225 Difference]: With dead ends: 575 [2020-10-29 12:17:27,820 INFO L226 Difference]: Without dead ends: 569 [2020-10-29 12:17:27,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:17:27,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2020-10-29 12:17:27,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 453. [2020-10-29 12:17:27,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-10-29 12:17:27,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 777 transitions. [2020-10-29 12:17:27,940 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 777 transitions. Word has length 54 [2020-10-29 12:17:27,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:27,940 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 777 transitions. [2020-10-29 12:17:27,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:17:27,940 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 777 transitions. [2020-10-29 12:17:27,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 12:17:27,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:27,948 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 1, 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 12:17:27,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:17:27,948 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:27,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:27,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1664189676, now seen corresponding path program 6 times [2020-10-29 12:17:27,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:27,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050487948] [2020-10-29 12:17:27,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:28,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:28,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:28,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:28,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:28,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:28,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:29,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:29,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:30,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:31,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:31,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:31,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:31,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:32,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 12:17:32,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 12:17:32,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:17:32,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:32,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:17:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:17:32,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 12:17:32,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:33,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:33,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:33,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:33,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:33,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:33,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:17:33,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:33,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:33,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:33,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:33,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:33,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:33,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:33,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:33,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:33,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 12:17:33,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:33,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:17:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:33,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:17:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:33,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:33,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:33,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:33,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:33,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:33,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 12:17:33,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:33,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:17:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:17:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:33,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 12:17:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:33,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:33,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:33,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:33,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:33,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 12:17:33,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:33,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:17:33,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:33,380 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 20 proven. 45 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 12:17:33,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050487948] [2020-10-29 12:17:33,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:33,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:17:33,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446194744] [2020-10-29 12:17:33,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:17:33,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:33,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:17:33,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:17:33,382 INFO L87 Difference]: Start difference. First operand 453 states and 777 transitions. Second operand 11 states. [2020-10-29 12:17:34,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:34,404 INFO L93 Difference]: Finished difference Result 627 states and 1025 transitions. [2020-10-29 12:17:34,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:17:34,405 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-10-29 12:17:34,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:34,411 INFO L225 Difference]: With dead ends: 627 [2020-10-29 12:17:34,412 INFO L226 Difference]: Without dead ends: 506 [2020-10-29 12:17:34,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:17:34,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-10-29 12:17:34,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 440. [2020-10-29 12:17:34,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-10-29 12:17:34,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 746 transitions. [2020-10-29 12:17:34,489 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 746 transitions. Word has length 54 [2020-10-29 12:17:34,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:34,490 INFO L481 AbstractCegarLoop]: Abstraction has 440 states and 746 transitions. [2020-10-29 12:17:34,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:17:34,490 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 746 transitions. [2020-10-29 12:17:34,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 12:17:34,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:34,496 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:34,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:17:34,496 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:34,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:34,497 INFO L82 PathProgramCache]: Analyzing trace with hash -653072426, now seen corresponding path program 7 times [2020-10-29 12:17:34,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:34,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060047204] [2020-10-29 12:17:34,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:34,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:34,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:34,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:34,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:35,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:35,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:35,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:35,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:35,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:35,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:36,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:36,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:36,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:39,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:39,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 12:17:39,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-29 12:17:39,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 12:17:39,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:39,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:39,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:17:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 12:17:39,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:39,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:39,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:39,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:39,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:39,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:39,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:17:39,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:39,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:39,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:39,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:39,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:39,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:39,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:39,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:39,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:39,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:39,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:39,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:17:39,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:39,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:39,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:39,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:39,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:17:39,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:39,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:17:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:39,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:39,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:39,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:39,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:39,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:39,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 12:17:39,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:39,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:39,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:39,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:39,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:17:39,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:40,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 12:17:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:40,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:40,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:40,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:40,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:40,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 12:17:40,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:40,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:17:40,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:40,279 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 12:17:40,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060047204] [2020-10-29 12:17:40,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:40,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 12:17:40,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122299173] [2020-10-29 12:17:40,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 12:17:40,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:40,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 12:17:40,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:17:40,282 INFO L87 Difference]: Start difference. First operand 440 states and 746 transitions. Second operand 19 states. [2020-10-29 12:17:44,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:44,147 INFO L93 Difference]: Finished difference Result 654 states and 1029 transitions. [2020-10-29 12:17:44,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 12:17:44,148 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 54 [2020-10-29 12:17:44,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:44,157 INFO L225 Difference]: With dead ends: 654 [2020-10-29 12:17:44,157 INFO L226 Difference]: Without dead ends: 523 [2020-10-29 12:17:44,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=526, Invalid=2896, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 12:17:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-10-29 12:17:44,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 464. [2020-10-29 12:17:44,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-29 12:17:44,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 777 transitions. [2020-10-29 12:17:44,238 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 777 transitions. Word has length 54 [2020-10-29 12:17:44,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:44,238 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 777 transitions. [2020-10-29 12:17:44,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 12:17:44,238 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 777 transitions. [2020-10-29 12:17:44,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 12:17:44,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:44,245 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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 12:17:44,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:17:44,245 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:44,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:44,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1969910510, now seen corresponding path program 1 times [2020-10-29 12:17:44,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:44,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566530461] [2020-10-29 12:17:44,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:44,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:44,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:44,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 12:17:44,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:44,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 697 [2020-10-29 12:17:44,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:44,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:44,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:17:44,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:44,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:17:44,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:45,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:45,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:45,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:45,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:45,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:45,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:45,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:45,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:45,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:45,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:45,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:45,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:45,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:45,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:45,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:45,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 12:17:45,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:45,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:45,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:17:45,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:17:45,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:45,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:17:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:45,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:45,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:45,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:45,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 12:17:45,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:45,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:45,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:17:45,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:45,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 12:17:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:45,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:45,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:45,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:45,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 12:17:45,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:45,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:45,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:45,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:45,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:17:45,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-29 12:17:45,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566530461] [2020-10-29 12:17:45,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:45,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:17:45,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294382741] [2020-10-29 12:17:45,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:17:45,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:45,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:17:45,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:17:45,578 INFO L87 Difference]: Start difference. First operand 464 states and 777 transitions. Second operand 13 states. [2020-10-29 12:17:46,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:46,415 INFO L93 Difference]: Finished difference Result 642 states and 1253 transitions. [2020-10-29 12:17:46,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:17:46,415 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-29 12:17:46,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:46,424 INFO L225 Difference]: With dead ends: 642 [2020-10-29 12:17:46,424 INFO L226 Difference]: Without dead ends: 636 [2020-10-29 12:17:46,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:17:46,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-10-29 12:17:46,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 537. [2020-10-29 12:17:46,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-10-29 12:17:46,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 951 transitions. [2020-10-29 12:17:46,526 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 951 transitions. Word has length 54 [2020-10-29 12:17:46,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:46,526 INFO L481 AbstractCegarLoop]: Abstraction has 537 states and 951 transitions. [2020-10-29 12:17:46,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:17:46,526 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 951 transitions. [2020-10-29 12:17:46,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 12:17:46,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:46,534 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:46,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:17:46,534 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:46,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:46,535 INFO L82 PathProgramCache]: Analyzing trace with hash 165511182, now seen corresponding path program 8 times [2020-10-29 12:17:46,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:46,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804650110] [2020-10-29 12:17:46,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:46,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:46,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:46,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:46,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:47,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:48,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:48,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:48,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:49,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:49,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:51,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 12:17:51,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 12:17:51,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:17:51,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:51,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:17:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:17:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 12:17:51,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:51,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:51,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:51,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:51,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:51,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:51,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:51,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:51,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:51,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:51,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:51,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:51,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:51,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:51,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:51,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:51,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 12:17:51,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:51,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:17:51,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:52,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:17:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:52,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:52,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:52,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:52,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 12:17:52,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:52,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:52,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:17:52,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:52,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:17:52,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:52,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:17:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:52,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:52,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:52,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 12:17:52,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:52,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:17:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:17:52,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:52,344 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 12:17:52,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804650110] [2020-10-29 12:17:52,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:52,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:17:52,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471096688] [2020-10-29 12:17:52,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:17:52,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:52,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:17:52,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:17:52,347 INFO L87 Difference]: Start difference. First operand 537 states and 951 transitions. Second operand 16 states. [2020-10-29 12:17:53,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:53,907 INFO L93 Difference]: Finished difference Result 656 states and 1154 transitions. [2020-10-29 12:17:53,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:17:53,909 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2020-10-29 12:17:53,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:53,916 INFO L225 Difference]: With dead ends: 656 [2020-10-29 12:17:53,916 INFO L226 Difference]: Without dead ends: 650 [2020-10-29 12:17:53,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:17:53,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-10-29 12:17:54,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 597. [2020-10-29 12:17:54,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-10-29 12:17:54,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 1032 transitions. [2020-10-29 12:17:54,016 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 1032 transitions. Word has length 56 [2020-10-29 12:17:54,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:54,016 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 1032 transitions. [2020-10-29 12:17:54,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:17:54,016 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 1032 transitions. [2020-10-29 12:17:54,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 12:17:54,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:54,024 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 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 12:17:54,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:17:54,025 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:54,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:54,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1102462557, now seen corresponding path program 3 times [2020-10-29 12:17:54,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:54,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662618609] [2020-10-29 12:17:54,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:54,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:54,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:54,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:59,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 12:17:59,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:17:59,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:17:59,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:59,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 12:17:59,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:59,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:59,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:59,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:59,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:59,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:59,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:59,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:59,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:59,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:59,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:59,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:59,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:59,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:59,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:59,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:59,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:17:59,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:59,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:59,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:59,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:59,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:17:59,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:59,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:17:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:59,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:59,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:59,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:59,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 12:17:59,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:59,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:59,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:17:59,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:59,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:17:59,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:59,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 12:17:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:59,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:59,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:17:59,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:59,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:17:59,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:59,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:59,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:59,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:59,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:17:59,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 59 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 12:17:59,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662618609] [2020-10-29 12:17:59,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:59,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:17:59,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626811942] [2020-10-29 12:17:59,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:17:59,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:59,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:17:59,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:17:59,266 INFO L87 Difference]: Start difference. First operand 597 states and 1032 transitions. Second operand 11 states. [2020-10-29 12:18:00,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:00,167 INFO L93 Difference]: Finished difference Result 765 states and 1249 transitions. [2020-10-29 12:18:00,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 12:18:00,168 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-29 12:18:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:00,173 INFO L225 Difference]: With dead ends: 765 [2020-10-29 12:18:00,173 INFO L226 Difference]: Without dead ends: 405 [2020-10-29 12:18:00,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:18:00,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-10-29 12:18:00,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 367. [2020-10-29 12:18:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-10-29 12:18:00,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 604 transitions. [2020-10-29 12:18:00,240 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 604 transitions. Word has length 57 [2020-10-29 12:18:00,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:00,240 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 604 transitions. [2020-10-29 12:18:00,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:18:00,241 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 604 transitions. [2020-10-29 12:18:00,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 12:18:00,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:00,245 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 3, 3, 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 12:18:00,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:18:00,246 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:00,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:00,246 INFO L82 PathProgramCache]: Analyzing trace with hash -222362096, now seen corresponding path program 9 times [2020-10-29 12:18:00,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:00,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959856424] [2020-10-29 12:18:00,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:00,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:00,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:00,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:00,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:00,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:00,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:01,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:02,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:02,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:02,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:03,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:03,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:03,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:05,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:05,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 12:18:05,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 12:18:05,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:18:05,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:05,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:05,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:18:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:18:05,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:05,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:05,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:05,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:05,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:05,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:05,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:05,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:05,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:05,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:05,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:05,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:05,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:05,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:05,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:05,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:18:05,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:05,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:18:05,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:05,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:05,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:18:05,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:05,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:18:05,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:05,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:18:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:05,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:05,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:05,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:05,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:18:05,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:05,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 12:18:05,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:05,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:05,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:05,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:05,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:18:05,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:05,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 12:18:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:05,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:05,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:05,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:18:05,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:05,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:18:05,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:05,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:05,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:05,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 12:18:05,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:05,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 45 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-29 12:18:05,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959856424] [2020-10-29 12:18:05,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:05,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:18:05,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021438696] [2020-10-29 12:18:05,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:18:05,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:05,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:18:05,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:18:05,458 INFO L87 Difference]: Start difference. First operand 367 states and 604 transitions. Second operand 10 states. [2020-10-29 12:18:05,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:05,975 INFO L93 Difference]: Finished difference Result 414 states and 653 transitions. [2020-10-29 12:18:05,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:18:05,976 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-29 12:18:05,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:05,979 INFO L225 Difference]: With dead ends: 414 [2020-10-29 12:18:05,980 INFO L226 Difference]: Without dead ends: 302 [2020-10-29 12:18:05,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:18:05,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-29 12:18:06,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 273. [2020-10-29 12:18:06,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-29 12:18:06,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 484 transitions. [2020-10-29 12:18:06,025 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 484 transitions. Word has length 58 [2020-10-29 12:18:06,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:06,025 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 484 transitions. [2020-10-29 12:18:06,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:18:06,025 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 484 transitions. [2020-10-29 12:18:06,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 12:18:06,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:06,030 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 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 12:18:06,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:18:06,030 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:06,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:06,030 INFO L82 PathProgramCache]: Analyzing trace with hash -175891079, now seen corresponding path program 4 times [2020-10-29 12:18:06,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:06,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37805557] [2020-10-29 12:18:06,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:06,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:06,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:06,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:11,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:11,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 12:18:11,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:18:11,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 12:18:11,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:11,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:11,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:18:11,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:11,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 12:18:11,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:11,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:11,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:11,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:11,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:11,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:11,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:11,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:11,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:11,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:11,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:11,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:11,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:11,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:11,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:11,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 12:18:11,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:11,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:18:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:18:11,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:11,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:18:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:11,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:11,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:11,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:11,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:11,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:11,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 12:18:11,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:11,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:11,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:11,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:11,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:18:11,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:11,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 12:18:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:11,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:11,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:11,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:11,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:11,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:18:11,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:11,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:11,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:11,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:11,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:11,377 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 5 proven. 82 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-29 12:18:11,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37805557] [2020-10-29 12:18:11,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:11,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 12:18:11,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253340548] [2020-10-29 12:18:11,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:18:11,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:11,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:18:11,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:18:11,385 INFO L87 Difference]: Start difference. First operand 273 states and 484 transitions. Second operand 9 states. [2020-10-29 12:18:12,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:12,040 INFO L93 Difference]: Finished difference Result 432 states and 706 transitions. [2020-10-29 12:18:12,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:18:12,041 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-10-29 12:18:12,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:12,044 INFO L225 Difference]: With dead ends: 432 [2020-10-29 12:18:12,044 INFO L226 Difference]: Without dead ends: 268 [2020-10-29 12:18:12,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:18:12,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-29 12:18:12,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 239. [2020-10-29 12:18:12,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-29 12:18:12,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 431 transitions. [2020-10-29 12:18:12,085 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 431 transitions. Word has length 63 [2020-10-29 12:18:12,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:12,086 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 431 transitions. [2020-10-29 12:18:12,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:18:12,086 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 431 transitions. [2020-10-29 12:18:12,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:18:12,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:12,091 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 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 12:18:12,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:18:12,091 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:12,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:12,092 INFO L82 PathProgramCache]: Analyzing trace with hash 804775803, now seen corresponding path program 5 times [2020-10-29 12:18:12,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:12,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848331885] [2020-10-29 12:18:12,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:12,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:13,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:13,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:18:13,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:13,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1425 [2020-10-29 12:18:13,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:13,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:18:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:18:13,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:13,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:13,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:13,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:13,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:13,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:13,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:13,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:13,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:13,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:13,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:13,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:13,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:13,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:13,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 12:18:13,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:13,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:13,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:18:13,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:13,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:18:13,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:13,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:18:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:13,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:13,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:13,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:13,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:13,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 12:18:13,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:13,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:13,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:18:13,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:13,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:18:13,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:14,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:18:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:14,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:14,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:14,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:14,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:14,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 12:18:14,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:14,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:18:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:18:14,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-29 12:18:14,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848331885] [2020-10-29 12:18:14,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:14,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:18:14,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710644434] [2020-10-29 12:18:14,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:18:14,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:14,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:18:14,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:18:14,134 INFO L87 Difference]: Start difference. First operand 239 states and 431 transitions. Second operand 14 states. [2020-10-29 12:18:15,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:15,028 INFO L93 Difference]: Finished difference Result 342 states and 749 transitions. [2020-10-29 12:18:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:18:15,029 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-29 12:18:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:15,034 INFO L225 Difference]: With dead ends: 342 [2020-10-29 12:18:15,034 INFO L226 Difference]: Without dead ends: 336 [2020-10-29 12:18:15,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:18:15,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-29 12:18:15,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 289. [2020-10-29 12:18:15,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-29 12:18:15,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 550 transitions. [2020-10-29 12:18:15,095 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 550 transitions. Word has length 65 [2020-10-29 12:18:15,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:15,096 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 550 transitions. [2020-10-29 12:18:15,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:18:15,096 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 550 transitions. [2020-10-29 12:18:15,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:18:15,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:15,102 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:15,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 12:18:15,103 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:15,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:15,103 INFO L82 PathProgramCache]: Analyzing trace with hash 103711225, now seen corresponding path program 10 times [2020-10-29 12:18:15,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:15,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552864222] [2020-10-29 12:18:15,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:15,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:15,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:16,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:16,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:16,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:17,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:20,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:20,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:18:20,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:18:20,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:18:20,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:20,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:18:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:18:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 12:18:20,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:20,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:20,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:20,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:20,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:20,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:20,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:18:20,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:20,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:20,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:20,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:20,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:20,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:20,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:20,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:20,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:20,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:20,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:20,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 12:18:20,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:20,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:20,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:18:20,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:20,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:18:20,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:20,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:18:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:20,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:20,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:20,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:20,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:20,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:20,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 12:18:20,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:20,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:20,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:20,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:20,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:18:20,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:20,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:18:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:20,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:20,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:20,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:20,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:20,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:20,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 12:18:20,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:20,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:20,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:18:20,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:20,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:18:20,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:21,137 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 42 proven. 93 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 12:18:21,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552864222] [2020-10-29 12:18:21,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:21,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 12:18:21,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467525960] [2020-10-29 12:18:21,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 12:18:21,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:21,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 12:18:21,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:18:21,149 INFO L87 Difference]: Start difference. First operand 289 states and 550 transitions. Second operand 19 states. [2020-10-29 12:18:22,568 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-29 12:18:23,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:23,797 INFO L93 Difference]: Finished difference Result 499 states and 1235 transitions. [2020-10-29 12:18:23,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 12:18:23,802 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-10-29 12:18:23,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:23,810 INFO L225 Difference]: With dead ends: 499 [2020-10-29 12:18:23,810 INFO L226 Difference]: Without dead ends: 493 [2020-10-29 12:18:23,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=239, Invalid=1401, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 12:18:23,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-10-29 12:18:23,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 410. [2020-10-29 12:18:23,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-10-29 12:18:23,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 951 transitions. [2020-10-29 12:18:23,919 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 951 transitions. Word has length 65 [2020-10-29 12:18:23,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:23,919 INFO L481 AbstractCegarLoop]: Abstraction has 410 states and 951 transitions. [2020-10-29 12:18:23,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 12:18:23,920 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 951 transitions. [2020-10-29 12:18:23,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:18:23,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:23,930 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:23,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 12:18:23,932 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:23,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:23,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1815893053, now seen corresponding path program 11 times [2020-10-29 12:18:23,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:23,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715719584] [2020-10-29 12:18:23,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:24,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:24,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:24,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:24,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:24,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:25,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:25,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:26,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:26,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:26,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:28,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:28,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:18:28,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 12:18:28,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 12:18:28,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:28,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:18:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:18:28,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:18:28,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:29,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:29,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:29,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:29,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:29,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:29,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:18:29,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:29,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:29,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:29,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:29,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:29,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:29,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:29,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:29,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:29,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:29,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 12:18:29,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:29,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:18:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:18:29,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:29,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:18:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:29,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:29,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:29,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:29,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:29,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:29,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 12:18:29,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:29,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:29,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:29,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:29,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:18:29,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:29,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:18:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:29,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:29,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:29,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:29,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:29,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 12:18:29,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:29,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:18:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:18:29,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 37 proven. 96 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 12:18:29,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715719584] [2020-10-29 12:18:29,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:29,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:18:29,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023350959] [2020-10-29 12:18:29,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:18:29,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:29,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:18:29,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:18:29,675 INFO L87 Difference]: Start difference. First operand 410 states and 951 transitions. Second operand 15 states. [2020-10-29 12:18:31,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:31,936 INFO L93 Difference]: Finished difference Result 971 states and 2355 transitions. [2020-10-29 12:18:31,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 12:18:31,937 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-29 12:18:31,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:31,949 INFO L225 Difference]: With dead ends: 971 [2020-10-29 12:18:31,949 INFO L226 Difference]: Without dead ends: 625 [2020-10-29 12:18:31,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=187, Invalid=1073, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 12:18:31,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2020-10-29 12:18:32,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 612. [2020-10-29 12:18:32,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2020-10-29 12:18:32,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1539 transitions. [2020-10-29 12:18:32,109 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1539 transitions. Word has length 65 [2020-10-29 12:18:32,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:32,109 INFO L481 AbstractCegarLoop]: Abstraction has 612 states and 1539 transitions. [2020-10-29 12:18:32,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:18:32,109 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1539 transitions. [2020-10-29 12:18:32,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:18:32,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:32,124 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:32,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 12:18:32,124 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:32,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:32,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1644824327, now seen corresponding path program 12 times [2020-10-29 12:18:32,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:32,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910034145] [2020-10-29 12:18:32,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:32,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:33,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:33,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:34,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:35,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:35,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:35,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:36,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:37,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:37,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:18:37,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:18:37,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 12:18:37,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:37,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:37,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:18:37,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 12:18:37,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 12:18:37,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:37,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:37,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:37,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:37,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:37,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:37,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:37,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:37,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:37,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:37,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:37,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:37,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:37,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:37,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:37,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:18:37,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:37,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:37,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:37,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:18:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:37,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:37,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:37,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:37,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:37,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:18:37,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:37,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:18:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:18:37,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:37,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:18:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:37,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:37,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:37,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:37,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:37,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 12:18:37,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:37,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:18:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:18:37,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 74 proven. 49 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-29 12:18:37,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910034145] [2020-10-29 12:18:37,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:37,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:18:37,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495317649] [2020-10-29 12:18:37,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:18:37,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:37,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:18:37,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:18:37,610 INFO L87 Difference]: Start difference. First operand 612 states and 1539 transitions. Second operand 14 states. [2020-10-29 12:18:38,993 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-29 12:18:39,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:39,727 INFO L93 Difference]: Finished difference Result 835 states and 2320 transitions. [2020-10-29 12:18:39,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 12:18:39,728 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-29 12:18:39,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:39,743 INFO L225 Difference]: With dead ends: 835 [2020-10-29 12:18:39,743 INFO L226 Difference]: Without dead ends: 777 [2020-10-29 12:18:39,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:18:39,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-10-29 12:18:39,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 768. [2020-10-29 12:18:39,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2020-10-29 12:18:39,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1982 transitions. [2020-10-29 12:18:39,951 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1982 transitions. Word has length 65 [2020-10-29 12:18:39,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:39,952 INFO L481 AbstractCegarLoop]: Abstraction has 768 states and 1982 transitions. [2020-10-29 12:18:39,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:18:39,952 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1982 transitions. [2020-10-29 12:18:39,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:18:39,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:39,970 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:39,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 12:18:39,971 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:39,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:39,971 INFO L82 PathProgramCache]: Analyzing trace with hash 820294521, now seen corresponding path program 13 times [2020-10-29 12:18:39,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:39,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807534747] [2020-10-29 12:18:39,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:40,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:40,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:40,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:41,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:42,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:42,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:43,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:43,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:43,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:45,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:45,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:18:45,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 12:18:45,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:18:45,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:45,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:18:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:18:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:18:45,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:45,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:45,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:45,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:45,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:45,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:45,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:45,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:45,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:45,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:45,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:45,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:45,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:45,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:45,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:45,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 12:18:45,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:45,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:45,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:18:45,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:45,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:18:45,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:45,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:18:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:45,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:45,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:45,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:45,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:45,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 12:18:45,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:45,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:18:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:18:45,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:45,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:18:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:45,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:45,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:45,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:45,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:45,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:18:45,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:45,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:45,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:45,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:45,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:45,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 4 proven. 107 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-29 12:18:45,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807534747] [2020-10-29 12:18:45,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:45,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:18:45,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281048339] [2020-10-29 12:18:45,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:18:45,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:45,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:18:45,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:18:45,721 INFO L87 Difference]: Start difference. First operand 768 states and 1982 transitions. Second operand 15 states. [2020-10-29 12:18:47,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:47,211 INFO L93 Difference]: Finished difference Result 1565 states and 3527 transitions. [2020-10-29 12:18:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:18:47,212 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-29 12:18:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:47,230 INFO L225 Difference]: With dead ends: 1565 [2020-10-29 12:18:47,230 INFO L226 Difference]: Without dead ends: 966 [2020-10-29 12:18:47,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:18:47,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-10-29 12:18:47,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 792. [2020-10-29 12:18:47,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-10-29 12:18:47,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 2051 transitions. [2020-10-29 12:18:47,468 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 2051 transitions. Word has length 65 [2020-10-29 12:18:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:47,469 INFO L481 AbstractCegarLoop]: Abstraction has 792 states and 2051 transitions. [2020-10-29 12:18:47,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:18:47,469 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 2051 transitions. [2020-10-29 12:18:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:18:47,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:47,501 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 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, 1] [2020-10-29 12:18:47,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 12:18:47,501 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:47,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:47,502 INFO L82 PathProgramCache]: Analyzing trace with hash 892681079, now seen corresponding path program 14 times [2020-10-29 12:18:47,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:47,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101053169] [2020-10-29 12:18:47,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:47,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:47,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:47,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:48,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:48,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:49,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:50,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:50,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:51,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:52,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:52,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:18:52,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:18:52,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 12:18:52,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:52,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:52,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:18:52,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:18:52,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:18:52,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:52,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:52,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:52,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:52,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:52,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:18:52,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:52,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:52,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:52,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:52,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:52,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:52,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:52,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:52,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:52,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:52,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:52,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 12:18:52,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:52,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:52,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:18:52,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:52,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:18:52,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:52,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:18:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:52,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:52,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:53,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:53,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:53,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:53,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 12:18:53,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:53,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:18:53,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:53,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:18:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:53,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:53,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:53,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:53,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:53,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 12:18:53,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:53,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:53,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:18:53,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:53,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:18:53,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:53,225 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 37 proven. 100 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-29 12:18:53,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101053169] [2020-10-29 12:18:53,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:53,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:18:53,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313213050] [2020-10-29 12:18:53,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:18:53,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:53,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:18:53,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:18:53,226 INFO L87 Difference]: Start difference. First operand 792 states and 2051 transitions. Second operand 17 states. [2020-10-29 12:18:55,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:55,709 INFO L93 Difference]: Finished difference Result 1407 states and 3356 transitions. [2020-10-29 12:18:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 12:18:55,710 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-10-29 12:18:55,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:55,728 INFO L225 Difference]: With dead ends: 1407 [2020-10-29 12:18:55,728 INFO L226 Difference]: Without dead ends: 846 [2020-10-29 12:18:55,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 12:18:55,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2020-10-29 12:18:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 831. [2020-10-29 12:18:55,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-10-29 12:18:55,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1893 transitions. [2020-10-29 12:18:55,961 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1893 transitions. Word has length 65 [2020-10-29 12:18:55,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:55,962 INFO L481 AbstractCegarLoop]: Abstraction has 831 states and 1893 transitions. [2020-10-29 12:18:55,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 12:18:55,962 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1893 transitions. [2020-10-29 12:18:55,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:18:55,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:55,973 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 3, 3, 3, 3, 3, 2, 2, 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 12:18:55,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 12:18:55,973 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:55,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:55,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1903798329, now seen corresponding path program 15 times [2020-10-29 12:18:55,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:55,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899334285] [2020-10-29 12:18:55,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:56,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:57,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:57,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:18:57,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:57,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1071 [2020-10-29 12:18:57,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:57,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:57,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:18:57,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:57,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:18:57,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:57,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:57,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:57,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:57,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:57,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:57,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:57,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:57,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:57,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:57,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:57,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:57,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:57,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:57,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:57,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:57,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:57,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:57,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 12:18:57,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:57,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:18:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:18:57,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:57,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:18:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:57,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:57,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:57,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:57,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:57,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 12:18:57,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:57,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:57,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:18:57,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:57,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:18:57,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:57,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:18:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:57,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:57,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:57,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:18:57,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:57,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 12:18:57,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:57,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:18:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:18:57,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-29 12:18:57,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899334285] [2020-10-29 12:18:57,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:57,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:18:57,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360865635] [2020-10-29 12:18:57,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:18:57,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:57,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:18:57,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:18:57,638 INFO L87 Difference]: Start difference. First operand 831 states and 1893 transitions. Second operand 13 states. [2020-10-29 12:18:58,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:58,505 INFO L93 Difference]: Finished difference Result 977 states and 2552 transitions. [2020-10-29 12:18:58,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:18:58,506 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-10-29 12:18:58,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:58,528 INFO L225 Difference]: With dead ends: 977 [2020-10-29 12:18:58,528 INFO L226 Difference]: Without dead ends: 971 [2020-10-29 12:18:58,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:18:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-10-29 12:18:58,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 882. [2020-10-29 12:18:58,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 882 states. [2020-10-29 12:18:58,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2173 transitions. [2020-10-29 12:18:58,794 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2173 transitions. Word has length 65 [2020-10-29 12:18:58,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:58,794 INFO L481 AbstractCegarLoop]: Abstraction has 882 states and 2173 transitions. [2020-10-29 12:18:58,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:18:58,794 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2173 transitions. [2020-10-29 12:18:58,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:18:58,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:58,807 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 3, 3, 3, 3, 3, 2, 2, 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 12:18:58,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 12:18:58,808 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:58,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:58,808 INFO L82 PathProgramCache]: Analyzing trace with hash 410738361, now seen corresponding path program 16 times [2020-10-29 12:18:58,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:58,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74200496] [2020-10-29 12:18:58,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:58,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:59,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:59,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:18:59,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:59,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-10-29 12:18:59,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:59,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:18:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:18:59,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:59,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:59,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:59,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:59,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:59,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:59,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:59,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:59,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:59,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:59,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:59,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:59,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:59,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:59,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:00,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:00,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:00,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 12:19:00,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:00,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:00,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:19:00,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:00,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:19:00,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:00,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:19:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:00,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:00,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:00,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:00,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 12:19:00,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:00,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:19:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:19:00,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:00,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:19:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:00,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:00,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:00,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:00,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 12:19:00,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:00,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:00,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:19:00,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:00,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:19:00,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:00,347 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-29 12:19:00,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74200496] [2020-10-29 12:19:00,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:00,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:19:00,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200265196] [2020-10-29 12:19:00,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:19:00,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:00,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:19:00,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:19:00,349 INFO L87 Difference]: Start difference. First operand 882 states and 2173 transitions. Second operand 14 states. [2020-10-29 12:19:01,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:01,449 INFO L93 Difference]: Finished difference Result 1320 states and 4373 transitions. [2020-10-29 12:19:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:19:01,450 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-29 12:19:01,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:01,485 INFO L225 Difference]: With dead ends: 1320 [2020-10-29 12:19:01,485 INFO L226 Difference]: Without dead ends: 1314 [2020-10-29 12:19:01,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:19:01,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2020-10-29 12:19:01,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1083. [2020-10-29 12:19:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1083 states. [2020-10-29 12:19:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2769 transitions. [2020-10-29 12:19:01,932 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2769 transitions. Word has length 65 [2020-10-29 12:19:01,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:01,933 INFO L481 AbstractCegarLoop]: Abstraction has 1083 states and 2769 transitions. [2020-10-29 12:19:01,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:19:01,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2769 transitions. [2020-10-29 12:19:01,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:19:01,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:01,950 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 3, 3, 3, 3, 3, 2, 2, 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 12:19:01,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 12:19:01,950 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:01,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:01,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1509760887, now seen corresponding path program 17 times [2020-10-29 12:19:01,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:01,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061113479] [2020-10-29 12:19:01,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:02,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:02,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:02,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:19:02,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:02,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 986 [2020-10-29 12:19:02,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:02,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:02,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:19:02,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:19:02,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:19:02,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:03,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:03,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:03,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:03,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:03,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:03,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:03,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:03,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:03,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:03,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:03,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:03,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:03,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:03,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:03,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 12:19:03,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:03,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:03,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:19:03,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:03,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:19:03,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:03,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:19:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:03,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:03,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:03,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:03,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:03,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 12:19:03,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:03,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:19:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:19:03,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:03,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:19:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:03,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:03,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:03,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:03,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:03,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 12:19:03,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:03,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:03,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:19:03,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:03,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:19:03,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:03,545 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-29 12:19:03,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061113479] [2020-10-29 12:19:03,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:03,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:19:03,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969915195] [2020-10-29 12:19:03,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:19:03,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:03,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:19:03,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:19:03,548 INFO L87 Difference]: Start difference. First operand 1083 states and 2769 transitions. Second operand 13 states. [2020-10-29 12:19:04,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:04,543 INFO L93 Difference]: Finished difference Result 1307 states and 3767 transitions. [2020-10-29 12:19:04,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:19:04,544 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-10-29 12:19:04,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:04,570 INFO L225 Difference]: With dead ends: 1307 [2020-10-29 12:19:04,571 INFO L226 Difference]: Without dead ends: 1301 [2020-10-29 12:19:04,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:19:04,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2020-10-29 12:19:04,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1169. [2020-10-29 12:19:04,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1169 states. [2020-10-29 12:19:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 3238 transitions. [2020-10-29 12:19:04,938 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 3238 transitions. Word has length 65 [2020-10-29 12:19:04,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:04,939 INFO L481 AbstractCegarLoop]: Abstraction has 1169 states and 3238 transitions. [2020-10-29 12:19:04,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:19:04,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 3238 transitions. [2020-10-29 12:19:04,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:19:04,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:04,960 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 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, 1] [2020-10-29 12:19:04,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 12:19:04,960 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:04,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:04,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1006338295, now seen corresponding path program 18 times [2020-10-29 12:19:04,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:04,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137848345] [2020-10-29 12:19:04,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:05,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:05,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:05,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:05,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:05,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:05,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:05,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:06,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:07,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:08,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:08,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:09,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:09,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:09,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:09,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:09,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:10,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:10,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:19:10,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 12:19:10,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:19:10,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:10,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:19:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:19:10,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:19:10,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:10,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:10,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:10,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:10,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:10,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:10,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:10,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:10,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:10,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:10,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:10,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:10,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:10,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:10,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:10,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:10,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 12:19:10,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:10,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:10,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:19:10,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:10,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:19:10,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:10,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:19:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:10,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:10,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:10,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:10,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:10,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:10,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 12:19:10,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:10,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:19:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:19:10,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:10,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:19:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:10,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:10,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:10,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:10,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:19:10,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:10,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:10,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:19:10,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:10,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:19:10,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 13 proven. 121 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 12:19:10,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137848345] [2020-10-29 12:19:10,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:10,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:19:10,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985789314] [2020-10-29 12:19:10,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:19:10,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:10,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:19:10,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:19:10,808 INFO L87 Difference]: Start difference. First operand 1169 states and 3238 transitions. Second operand 17 states. [2020-10-29 12:19:12,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:12,628 INFO L93 Difference]: Finished difference Result 1845 states and 4347 transitions. [2020-10-29 12:19:12,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 12:19:12,631 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-10-29 12:19:12,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:12,663 INFO L225 Difference]: With dead ends: 1845 [2020-10-29 12:19:12,663 INFO L226 Difference]: Without dead ends: 1166 [2020-10-29 12:19:12,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:19:12,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2020-10-29 12:19:12,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1113. [2020-10-29 12:19:12,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1113 states. [2020-10-29 12:19:13,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 2911 transitions. [2020-10-29 12:19:13,015 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 2911 transitions. Word has length 65 [2020-10-29 12:19:13,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:13,016 INFO L481 AbstractCegarLoop]: Abstraction has 1113 states and 2911 transitions. [2020-10-29 12:19:13,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 12:19:13,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 2911 transitions. [2020-10-29 12:19:13,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:19:13,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:13,037 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 3, 3, 3, 3, 3, 2, 2, 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 12:19:13,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 12:19:13,038 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:13,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:13,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1795239689, now seen corresponding path program 19 times [2020-10-29 12:19:13,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:13,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590261658] [2020-10-29 12:19:13,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:13,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:14,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:14,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:19:14,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:14,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1097 [2020-10-29 12:19:14,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:14,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:14,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:19:14,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:19:14,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:19:14,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:14,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:14,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:14,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:14,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:14,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:14,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:19:14,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:14,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:14,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:14,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:14,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:14,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:14,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:14,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:14,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:14,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:14,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:14,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 12:19:14,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:14,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:19:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:19:14,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:14,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:19:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:14,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:14,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:14,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:14,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:14,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 12:19:14,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:14,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:14,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:19:14,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:14,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:19:14,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:14,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:19:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:14,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:14,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:14,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:14,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:14,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 12:19:14,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:14,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:14,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:19:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:19:14,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-29 12:19:14,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590261658] [2020-10-29 12:19:14,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:14,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:19:14,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753748971] [2020-10-29 12:19:14,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:19:14,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:14,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:19:14,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:19:14,686 INFO L87 Difference]: Start difference. First operand 1113 states and 2911 transitions. Second operand 14 states. [2020-10-29 12:19:15,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:15,857 INFO L93 Difference]: Finished difference Result 1527 states and 5332 transitions. [2020-10-29 12:19:15,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:19:15,858 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-29 12:19:15,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:15,907 INFO L225 Difference]: With dead ends: 1527 [2020-10-29 12:19:15,907 INFO L226 Difference]: Without dead ends: 1521 [2020-10-29 12:19:15,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:19:15,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2020-10-29 12:19:16,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1261. [2020-10-29 12:19:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1261 states. [2020-10-29 12:19:16,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 3369 transitions. [2020-10-29 12:19:16,547 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 3369 transitions. Word has length 65 [2020-10-29 12:19:16,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:16,548 INFO L481 AbstractCegarLoop]: Abstraction has 1261 states and 3369 transitions. [2020-10-29 12:19:16,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:19:16,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 3369 transitions. [2020-10-29 12:19:16,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 12:19:16,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:16,573 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 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 12:19:16,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 12:19:16,573 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:16,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:16,574 INFO L82 PathProgramCache]: Analyzing trace with hash 2105690165, now seen corresponding path program 2 times [2020-10-29 12:19:16,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:16,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461623223] [2020-10-29 12:19:16,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:16,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:17,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:17,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:19:17,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:17,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1066 [2020-10-29 12:19:17,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:17,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:17,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:19:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:19:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:19:17,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:17,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:17,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:17,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:17,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:17,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:17,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:19:17,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:17,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:17,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:17,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:17,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:17,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:17,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:17,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:17,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 12:19:17,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:17,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:17,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:19:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:19:17,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:18,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:19:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:18,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:18,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:18,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:18,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:18,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 12:19:18,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:18,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:19:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:19:18,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:18,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:19:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:18,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:18,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:18,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:18,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:18,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 12:19:18,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:18,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:19:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:19:18,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:18,459 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 12:19:18,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461623223] [2020-10-29 12:19:18,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:18,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:19:18,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333989182] [2020-10-29 12:19:18,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:19:18,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:18,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:19:18,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:19:18,461 INFO L87 Difference]: Start difference. First operand 1261 states and 3369 transitions. Second operand 15 states. [2020-10-29 12:19:19,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:19,715 INFO L93 Difference]: Finished difference Result 1495 states and 4680 transitions. [2020-10-29 12:19:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:19:19,716 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-29 12:19:19,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:19,768 INFO L225 Difference]: With dead ends: 1495 [2020-10-29 12:19:19,768 INFO L226 Difference]: Without dead ends: 1489 [2020-10-29 12:19:19,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:19:19,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2020-10-29 12:19:20,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1356. [2020-10-29 12:19:20,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1356 states. [2020-10-29 12:19:20,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 3691 transitions. [2020-10-29 12:19:20,335 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 3691 transitions. Word has length 65 [2020-10-29 12:19:20,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:20,335 INFO L481 AbstractCegarLoop]: Abstraction has 1356 states and 3691 transitions. [2020-10-29 12:19:20,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:19:20,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 3691 transitions. [2020-10-29 12:19:20,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 12:19:20,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:20,359 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 3, 3, 3, 3, 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 12:19:20,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 12:19:20,359 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:20,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:20,360 INFO L82 PathProgramCache]: Analyzing trace with hash -78807813, now seen corresponding path program 20 times [2020-10-29 12:19:20,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:20,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078276328] [2020-10-29 12:19:20,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:20,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:20,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:20,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:20,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:20,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:21,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:23,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:23,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:24,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:24,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:24,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:25,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:25,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:25,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 12:19:25,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:19:25,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:19:25,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:25,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:19:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:19:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:19:25,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:25,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:25,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:25,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:25,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:25,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:25,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:19:25,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:25,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:25,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:25,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:25,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:25,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:25,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:25,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:25,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:25,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:25,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:25,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 12:19:25,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:25,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:25,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:19:25,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:25,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:19:25,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:25,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:19:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:25,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:25,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:25,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:25,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:25,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:25,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 12:19:25,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:25,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:19:25,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:25,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:19:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:25,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:25,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:25,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:25,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:25,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:19:25,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:25,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:25,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:25,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:19:25,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:25,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 86 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-29 12:19:25,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078276328] [2020-10-29 12:19:25,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:25,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:19:25,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436795916] [2020-10-29 12:19:25,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:19:25,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:25,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:19:25,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:19:25,662 INFO L87 Difference]: Start difference. First operand 1356 states and 3691 transitions. Second operand 11 states. [2020-10-29 12:19:26,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:26,598 INFO L93 Difference]: Finished difference Result 2990 states and 6691 transitions. [2020-10-29 12:19:26,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 12:19:26,599 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-29 12:19:26,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:26,629 INFO L225 Difference]: With dead ends: 2990 [2020-10-29 12:19:26,629 INFO L226 Difference]: Without dead ends: 2140 [2020-10-29 12:19:26,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:19:26,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2020-10-29 12:19:26,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1936. [2020-10-29 12:19:26,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1936 states. [2020-10-29 12:19:27,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 4388 transitions. [2020-10-29 12:19:27,010 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 4388 transitions. Word has length 67 [2020-10-29 12:19:27,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:27,011 INFO L481 AbstractCegarLoop]: Abstraction has 1936 states and 4388 transitions. [2020-10-29 12:19:27,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:19:27,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 4388 transitions. [2020-10-29 12:19:27,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 12:19:27,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:27,028 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 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 12:19:27,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 12:19:27,028 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:27,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:27,029 INFO L82 PathProgramCache]: Analyzing trace with hash 886266714, now seen corresponding path program 6 times [2020-10-29 12:19:27,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:27,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310452559] [2020-10-29 12:19:27,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:27,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:27,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:27,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:32,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:32,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 12:19:32,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:19:32,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:19:32,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:32,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:32,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:19:32,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:19:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 12:19:32,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 36 [2020-10-29 12:19:32,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:32,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:32,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:32,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:32,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:32,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:19:32,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:32,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:32,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:32,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:32,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:32,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:32,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:32,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:32,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 12:19:32,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:32,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:19:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:19:32,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:32,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:19:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:32,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:32,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:32,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:32,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 12:19:32,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:32,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 12:19:32,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:32,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:32,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:32,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:32,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:19:32,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:32,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 12:19:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:32,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:32,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:32,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:19:32,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:32,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 12:19:32,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:32,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:32,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:19:32,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:32,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:19:32,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:32,385 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 59 proven. 106 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 12:19:32,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310452559] [2020-10-29 12:19:32,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:32,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:19:32,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866549421] [2020-10-29 12:19:32,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:19:32,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:32,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:19:32,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:19:32,387 INFO L87 Difference]: Start difference. First operand 1936 states and 4388 transitions. Second operand 13 states. [2020-10-29 12:19:33,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:33,545 INFO L93 Difference]: Finished difference Result 2131 states and 4630 transitions. [2020-10-29 12:19:33,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:19:33,545 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-10-29 12:19:33,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:33,567 INFO L225 Difference]: With dead ends: 2131 [2020-10-29 12:19:33,567 INFO L226 Difference]: Without dead ends: 1218 [2020-10-29 12:19:33,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:19:33,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2020-10-29 12:19:33,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1157. [2020-10-29 12:19:33,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2020-10-29 12:19:33,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 3055 transitions. [2020-10-29 12:19:33,816 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 3055 transitions. Word has length 68 [2020-10-29 12:19:33,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:33,816 INFO L481 AbstractCegarLoop]: Abstraction has 1157 states and 3055 transitions. [2020-10-29 12:19:33,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:19:33,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 3055 transitions. [2020-10-29 12:19:33,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 12:19:33,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:33,832 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 2, 2, 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 12:19:33,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 12:19:33,832 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:33,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:33,832 INFO L82 PathProgramCache]: Analyzing trace with hash -485179920, now seen corresponding path program 7 times [2020-10-29 12:19:33,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:33,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90643510] [2020-10-29 12:19:33,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:33,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:33,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:34,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:38,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:38,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 12:19:38,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:19:38,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 12:19:38,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:38,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:38,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:19:38,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:19:38,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 12:19:38,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:38,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:38,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:38,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:38,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:38,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:38,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:38,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:38,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:38,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:38,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:38,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:38,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:38,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:19:38,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:38,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 12:19:38,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:38,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:38,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:19:38,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:38,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:19:38,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:39,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 12:19:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:39,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:39,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:39,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:39,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:19:39,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:39,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 12:19:39,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:39,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:39,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:39,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:39,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 12:19:39,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:39,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:19:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:39,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:39,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:39,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:19:39,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:39,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:19:39,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:39,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 12:19:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:39,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 12 proven. 134 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-29 12:19:39,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90643510] [2020-10-29 12:19:39,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:39,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:19:39,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581214837] [2020-10-29 12:19:39,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:19:39,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:39,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:19:39,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:19:39,208 INFO L87 Difference]: Start difference. First operand 1157 states and 3055 transitions. Second operand 11 states. [2020-10-29 12:19:40,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:40,001 INFO L93 Difference]: Finished difference Result 1792 states and 3896 transitions. [2020-10-29 12:19:40,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:19:40,001 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-29 12:19:40,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:40,019 INFO L225 Difference]: With dead ends: 1792 [2020-10-29 12:19:40,019 INFO L226 Difference]: Without dead ends: 1140 [2020-10-29 12:19:40,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:19:40,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2020-10-29 12:19:40,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 995. [2020-10-29 12:19:40,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-10-29 12:19:40,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 2507 transitions. [2020-10-29 12:19:40,218 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 2507 transitions. Word has length 74 [2020-10-29 12:19:40,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:40,218 INFO L481 AbstractCegarLoop]: Abstraction has 995 states and 2507 transitions. [2020-10-29 12:19:40,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:19:40,218 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 2507 transitions. [2020-10-29 12:19:40,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 12:19:40,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:40,230 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 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 12:19:40,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 12:19:40,230 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:40,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:40,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1678415790, now seen corresponding path program 8 times [2020-10-29 12:19:40,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:40,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297841703] [2020-10-29 12:19:40,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:40,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:41,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:41,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 12:19:41,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:41,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1621 [2020-10-29 12:19:41,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:41,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:19:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:19:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 12:19:41,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:42,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:42,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:42,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:42,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:42,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:42,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:19:42,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:42,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:42,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:42,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:42,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:42,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:19:42,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:42,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 12:19:42,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:42,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:19:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:19:42,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:42,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 12:19:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:42,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:42,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:42,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:19:42,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:42,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 12:19:42,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:42,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:42,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:19:42,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:42,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 12:19:42,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:42,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:19:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:42,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:42,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:42,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:19:42,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:42,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 12:19:42,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:42,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:19:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 12:19:42,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 2 proven. 200 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-29 12:19:42,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297841703] [2020-10-29 12:19:42,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:42,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:19:42,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196971494] [2020-10-29 12:19:42,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:19:42,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:42,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:19:42,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:19:42,915 INFO L87 Difference]: Start difference. First operand 995 states and 2507 transitions. Second operand 16 states. [2020-10-29 12:19:44,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:44,339 INFO L93 Difference]: Finished difference Result 1225 states and 3952 transitions. [2020-10-29 12:19:44,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:19:44,340 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-10-29 12:19:44,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:44,368 INFO L225 Difference]: With dead ends: 1225 [2020-10-29 12:19:44,369 INFO L226 Difference]: Without dead ends: 1219 [2020-10-29 12:19:44,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2020-10-29 12:19:44,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2020-10-29 12:19:44,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1095. [2020-10-29 12:19:44,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-10-29 12:19:44,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2837 transitions. [2020-10-29 12:19:44,847 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2837 transitions. Word has length 76 [2020-10-29 12:19:44,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:44,847 INFO L481 AbstractCegarLoop]: Abstraction has 1095 states and 2837 transitions. [2020-10-29 12:19:44,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:19:44,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2837 transitions. [2020-10-29 12:19:44,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 12:19:44,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:44,868 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 3, 3, 3, 3, 3, 3, 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 12:19:44,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 12:19:44,868 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:44,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:44,868 INFO L82 PathProgramCache]: Analyzing trace with hash 977351212, now seen corresponding path program 21 times [2020-10-29 12:19:44,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:44,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928600433] [2020-10-29 12:19:44,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:44,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:45,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:45,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:45,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:47,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:47,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:49,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:49,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:49,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 12:19:49,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:19:49,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-29 12:19:49,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:49,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:19:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:19:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 12:19:49,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:50,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:50,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:50,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:50,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:50,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:50,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:19:50,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:50,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:50,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:50,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:50,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:50,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:50,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:19:50,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:50,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 12:19:50,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:50,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:19:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:19:50,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:50,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 12:19:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:50,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:50,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:50,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:50,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:19:50,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:50,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 12:19:50,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:50,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:50,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:50,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:50,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 12:19:50,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:50,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:19:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:50,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:50,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:50,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:50,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:19:50,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:50,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-29 12:19:50,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:50,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:19:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:19:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 12:19:50,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 60 proven. 154 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-29 12:19:50,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928600433] [2020-10-29 12:19:50,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:50,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 12:19:50,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483618679] [2020-10-29 12:19:50,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 12:19:50,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:50,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 12:19:50,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:19:50,901 INFO L87 Difference]: Start difference. First operand 1095 states and 2837 transitions. Second operand 20 states. [2020-10-29 12:19:51,719 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-29 12:19:52,934 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-29 12:19:53,068 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-29 12:19:54,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:54,214 INFO L93 Difference]: Finished difference Result 1155 states and 2896 transitions. [2020-10-29 12:19:54,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 12:19:54,215 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 76 [2020-10-29 12:19:54,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:54,245 INFO L225 Difference]: With dead ends: 1155 [2020-10-29 12:19:54,245 INFO L226 Difference]: Without dead ends: 1149 [2020-10-29 12:19:54,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=288, Invalid=1968, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 12:19:54,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2020-10-29 12:19:54,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1095. [2020-10-29 12:19:54,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-10-29 12:19:54,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2675 transitions. [2020-10-29 12:19:54,469 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2675 transitions. Word has length 76 [2020-10-29 12:19:54,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:54,470 INFO L481 AbstractCegarLoop]: Abstraction has 1095 states and 2675 transitions. [2020-10-29 12:19:54,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 12:19:54,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2675 transitions. [2020-10-29 12:19:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 12:19:54,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:54,484 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 3, 3, 3, 3, 3, 3, 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 12:19:54,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 12:19:54,484 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:54,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:54,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1605434256, now seen corresponding path program 22 times [2020-10-29 12:19:54,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:54,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859997324] [2020-10-29 12:19:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:54,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:54,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:54,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:55,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:55,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:55,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:56,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:56,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:59,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:59,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 12:19:59,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:19:59,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:19:59,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:59,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:19:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:19:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 12:19:59,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:59,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:59,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:59,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:59,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:59,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:59,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:59,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:59,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:59,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:59,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:59,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:59,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:59,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:59,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:59,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:59,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:19:59,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:59,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 12:19:59,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:59,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:59,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:19:59,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:59,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:19:59,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:59,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 12:20:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:00,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:00,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:00,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:00,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:20:00,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:00,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 12:20:00,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:00,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:00,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:00,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:00,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 12:20:00,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:00,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 12:20:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:00,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:00,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:00,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:20:00,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:00,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 12:20:00,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:00,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:20:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:20:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 12:20:00,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:00,216 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 60 proven. 164 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-29 12:20:00,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859997324] [2020-10-29 12:20:00,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:20:00,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:20:00,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887279239] [2020-10-29 12:20:00,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:20:00,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:00,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:20:00,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:20:00,218 INFO L87 Difference]: Start difference. First operand 1095 states and 2675 transitions. Second operand 17 states. [2020-10-29 12:20:03,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:03,412 INFO L93 Difference]: Finished difference Result 2779 states and 8088 transitions. [2020-10-29 12:20:03,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 12:20:03,413 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 76 [2020-10-29 12:20:03,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:03,485 INFO L225 Difference]: With dead ends: 2779 [2020-10-29 12:20:03,486 INFO L226 Difference]: Without dead ends: 1892 [2020-10-29 12:20:03,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=203, Invalid=1357, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 12:20:03,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states.