/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_init7_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:42:03,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:42:03,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:42:03,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:42:03,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:42:03,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:42:03,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:42:03,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:42:03,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:42:03,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:42:03,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:42:03,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:42:03,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:42:03,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:42:03,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:42:03,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:42:03,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:42:03,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:42:03,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:42:03,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:42:03,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:42:03,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:42:03,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:42:03,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:42:03,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:42:03,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:42:03,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:42:03,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:42:03,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:42:03,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:42:03,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:42:03,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:42:03,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:42:03,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:42:03,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:42:03,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:42:03,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:42:03,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:42:03,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:42:03,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:42:03,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:42:03,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:42:03,341 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:42:03,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:42:03,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:42:03,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:42:03,346 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:42:03,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:42:03,347 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:42:03,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:42:03,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:42:03,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:42:03,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:42:03,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:42:03,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:42:03,349 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:42:03,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:42:03,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:42:03,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:42:03,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:42:03,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:42:03,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:42:03,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:42:03,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:42:03,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:42:03,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:42:03,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:42:03,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:42:03,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:42:03,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:42:03,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:42:03,352 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:42:03,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:42:03,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:42:03,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:42:03,801 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:42:03,801 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:42:03,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init7_ground-1.i [2020-10-29 03:42:03,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a12ce3c12/b577fcd546044f8cb938e3e2a7c6683b/FLAGb3716f95a [2020-10-29 03:42:04,474 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:42:04,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_init7_ground-1.i [2020-10-29 03:42:04,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a12ce3c12/b577fcd546044f8cb938e3e2a7c6683b/FLAGb3716f95a [2020-10-29 03:42:04,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a12ce3c12/b577fcd546044f8cb938e3e2a7c6683b [2020-10-29 03:42:04,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:42:04,842 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:42:04,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:42:04,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:42:04,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:42:04,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:42:04" (1/1) ... [2020-10-29 03:42:04,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2171815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:04, skipping insertion in model container [2020-10-29 03:42:04,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:42:04" (1/1) ... [2020-10-29 03:42:04,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:42:04,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:42:05,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:42:05,165 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:42:05,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:42:05,231 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:42:05,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:05 WrapperNode [2020-10-29 03:42:05,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:42:05,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:42:05,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:42:05,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:42:05,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:05" (1/1) ... [2020-10-29 03:42:05,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:05" (1/1) ... [2020-10-29 03:42:05,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:05" (1/1) ... [2020-10-29 03:42:05,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:05" (1/1) ... [2020-10-29 03:42:05,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:05" (1/1) ... [2020-10-29 03:42:05,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:05" (1/1) ... [2020-10-29 03:42:05,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:05" (1/1) ... [2020-10-29 03:42:05,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:42:05,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:42:05,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:42:05,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:42:05,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:42:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:42:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:42:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:42:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:42:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:42:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:42:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:42:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:42:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:42:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:42:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:42:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:42:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:42:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:42:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:42:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:42:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:42:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:42:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:42:05,678 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:42:05,679 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-29 03:42:05,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:42:05 BoogieIcfgContainer [2020-10-29 03:42:05,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:42:05,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:42:05,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:42:05,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:42:05,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:42:04" (1/3) ... [2020-10-29 03:42:05,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fd4bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:42:05, skipping insertion in model container [2020-10-29 03:42:05,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:05" (2/3) ... [2020-10-29 03:42:05,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fd4bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:42:05, skipping insertion in model container [2020-10-29 03:42:05,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:42:05" (3/3) ... [2020-10-29 03:42:05,691 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init7_ground-1.i [2020-10-29 03:42:05,705 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:42:05,712 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:42:05,732 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:42:05,776 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:42:05,777 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:42:05,777 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:42:05,777 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:42:05,777 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:42:05,777 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:42:05,777 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:42:05,777 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:42:05,823 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-29 03:42:05,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 03:42:05,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:05,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:05,841 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:05,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:05,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1254713614, now seen corresponding path program 1 times [2020-10-29 03:42:05,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:05,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420945897] [2020-10-29 03:42:05,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:06,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:06,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:06,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:06,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:06,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:06,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:07,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:07,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 03:42:07,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:07,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1713 [2020-10-29 03:42:07,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:07,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:07,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:42:07,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:42:07,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:42:07,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:42:07,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:07,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:07,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:07,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:07,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:42:07,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:07,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:07,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:07,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:07,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420945897] [2020-10-29 03:42:07,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:42:07,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:42:07,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78483562] [2020-10-29 03:42:07,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:42:07,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:07,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:42:07,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:42:07,955 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-10-29 03:42:08,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:08,138 INFO L93 Difference]: Finished difference Result 77 states and 125 transitions. [2020-10-29 03:42:08,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:42:08,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-29 03:42:08,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:08,148 INFO L225 Difference]: With dead ends: 77 [2020-10-29 03:42:08,148 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 03:42:08,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:42:08,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 03:42:08,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-29 03:42:08,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:42:08,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-10-29 03:42:08,197 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 27 [2020-10-29 03:42:08,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:08,198 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-29 03:42:08,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:42:08,198 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-10-29 03:42:08,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:42:08,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:08,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:08,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:42:08,200 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:08,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:08,201 INFO L82 PathProgramCache]: Analyzing trace with hash 2123827569, now seen corresponding path program 1 times [2020-10-29 03:42:08,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:08,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719962181] [2020-10-29 03:42:08,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:08,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:13,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:13,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:42:13,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:13,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 03:42:13,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:13,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:42:13,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 03:42:13,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 03:42:13,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:42:13,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:13,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:13,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:13,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:13,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:13,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:42:13,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:13,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:13,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:13,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:13,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:13,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 03:42:13,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719962181] [2020-10-29 03:42:13,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:13,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:42:13,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134368617] [2020-10-29 03:42:13,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:42:13,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:13,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:42:13,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:42:13,360 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 5 states. [2020-10-29 03:42:13,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:13,521 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-10-29 03:42:13,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:42:13,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-29 03:42:13,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:13,523 INFO L225 Difference]: With dead ends: 77 [2020-10-29 03:42:13,524 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 03:42:13,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:42:13,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 03:42:13,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-29 03:42:13,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 03:42:13,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-10-29 03:42:13,537 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 34 [2020-10-29 03:42:13,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:13,537 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-10-29 03:42:13,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:42:13,538 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-10-29 03:42:13,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 03:42:13,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:13,540 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:13,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:42:13,540 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:13,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:13,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1509369946, now seen corresponding path program 2 times [2020-10-29 03:42:13,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:13,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951831076] [2020-10-29 03:42:13,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:13,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:13,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:13,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:13,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:13,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:13,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:16,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:18,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:18,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 03:42:18,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:18,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:42:18,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:18,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:42:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 03:42:18,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:42:18,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:18,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:18,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:18,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:18,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:18,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:18,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:42:18,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:18,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:18,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:18,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:18,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:18,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 03:42:18,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951831076] [2020-10-29 03:42:18,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:18,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:42:18,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153599994] [2020-10-29 03:42:18,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:42:18,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:18,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:42:18,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:42:18,664 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 6 states. [2020-10-29 03:42:18,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:18,825 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2020-10-29 03:42:18,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:42:18,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-29 03:42:18,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:18,827 INFO L225 Difference]: With dead ends: 90 [2020-10-29 03:42:18,827 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 03:42:18,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:42:18,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 03:42:18,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-29 03:42:18,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 03:42:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-10-29 03:42:18,839 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 41 [2020-10-29 03:42:18,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:18,840 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-10-29 03:42:18,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:42:18,840 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-10-29 03:42:18,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 03:42:18,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:18,842 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, 1, 1, 1] [2020-10-29 03:42:18,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:42:18,842 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:18,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:18,843 INFO L82 PathProgramCache]: Analyzing trace with hash 2004918481, now seen corresponding path program 3 times [2020-10-29 03:42:18,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:18,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066632786] [2020-10-29 03:42:18,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:18,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:18,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:18,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:19,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:23,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:23,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:42:23,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:42:23,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:42:23,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:23,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:23,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:42:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:42:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 03:42:23,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 03:42:23,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:23,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:23,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:23,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:23,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:23,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:42:23,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:23,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:23,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:23,984 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-29 03:42:23,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066632786] [2020-10-29 03:42:23,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:23,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:42:23,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507742658] [2020-10-29 03:42:23,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:42:23,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:23,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:42:23,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:42:23,991 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 7 states. [2020-10-29 03:42:24,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:24,172 INFO L93 Difference]: Finished difference Result 103 states and 123 transitions. [2020-10-29 03:42:24,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:42:24,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-10-29 03:42:24,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:24,174 INFO L225 Difference]: With dead ends: 103 [2020-10-29 03:42:24,174 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 03:42:24,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:42:24,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 03:42:24,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-29 03:42:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 03:42:24,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-10-29 03:42:24,186 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 48 [2020-10-29 03:42:24,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:24,186 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-10-29 03:42:24,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:42:24,186 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-10-29 03:42:24,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 03:42:24,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:24,188 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:24,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:42:24,189 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:24,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:24,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1774816954, now seen corresponding path program 4 times [2020-10-29 03:42:24,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:24,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354400260] [2020-10-29 03:42:24,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:24,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:24,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:24,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:24,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:24,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:24,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:29,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 03:42:29,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:42:29,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:42:29,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:29,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:29,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:42:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 03:42:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:29,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:42:29,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:29,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:29,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:29,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:29,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:29,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:29,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:29,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:29,340 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 03:42:29,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354400260] [2020-10-29 03:42:29,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:29,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:42:29,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765731255] [2020-10-29 03:42:29,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:42:29,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:29,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:42:29,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:42:29,356 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 8 states. [2020-10-29 03:42:29,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:29,542 INFO L93 Difference]: Finished difference Result 116 states and 136 transitions. [2020-10-29 03:42:29,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:42:29,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-10-29 03:42:29,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:29,544 INFO L225 Difference]: With dead ends: 116 [2020-10-29 03:42:29,544 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 03:42:29,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:42:29,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 03:42:29,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-29 03:42:29,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 03:42:29,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2020-10-29 03:42:29,562 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 55 [2020-10-29 03:42:29,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:29,563 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2020-10-29 03:42:29,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:42:29,563 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2020-10-29 03:42:29,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 03:42:29,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:29,566 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:29,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:42:29,567 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:29,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:29,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1332096975, now seen corresponding path program 5 times [2020-10-29 03:42:29,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:29,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8952431] [2020-10-29 03:42:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:29,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:29,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:30,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:34,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:42:34,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:42:34,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:42:34,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:34,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:42:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 03:42:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:42:34,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:34,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:34,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:34,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:34,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:34,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:34,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:34,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:34,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:34,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:34,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 03:42:34,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8952431] [2020-10-29 03:42:34,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:34,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:42:34,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18864287] [2020-10-29 03:42:34,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:42:34,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:34,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:42:34,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:42:34,730 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 9 states. [2020-10-29 03:42:34,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:34,938 INFO L93 Difference]: Finished difference Result 129 states and 149 transitions. [2020-10-29 03:42:34,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:42:34,938 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-29 03:42:34,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:34,939 INFO L225 Difference]: With dead ends: 129 [2020-10-29 03:42:34,939 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:42:34,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:42:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:42:34,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-29 03:42:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 03:42:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2020-10-29 03:42:34,960 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 62 [2020-10-29 03:42:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:34,960 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2020-10-29 03:42:34,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:42:34,961 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2020-10-29 03:42:34,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 03:42:34,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:34,962 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:34,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:42:34,966 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:34,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:34,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1930890522, now seen corresponding path program 6 times [2020-10-29 03:42:34,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:34,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002186745] [2020-10-29 03:42:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:35,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:35,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:35,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:35,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:35,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:36,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:40,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 03:42:40,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:42:40,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:42:40,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:40,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:40,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:42:40,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:42:40,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:42:40,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:40,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:40,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:40,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:40,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:40,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:40,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:40,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:40,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-29 03:42:40,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002186745] [2020-10-29 03:42:40,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:40,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:42:40,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678627842] [2020-10-29 03:42:40,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:42:40,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:40,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:42:40,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:42:40,147 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 10 states. [2020-10-29 03:42:40,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:40,337 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2020-10-29 03:42:40,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:42:40,338 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-10-29 03:42:40,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:40,339 INFO L225 Difference]: With dead ends: 142 [2020-10-29 03:42:40,339 INFO L226 Difference]: Without dead ends: 81 [2020-10-29 03:42:40,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:42:40,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-29 03:42:40,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-29 03:42:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 03:42:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-10-29 03:42:40,349 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 69 [2020-10-29 03:42:40,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:40,350 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-10-29 03:42:40,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:42:40,350 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-10-29 03:42:40,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:42:40,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:40,351 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:40,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:42:40,352 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:40,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:40,352 INFO L82 PathProgramCache]: Analyzing trace with hash -154101871, now seen corresponding path program 7 times [2020-10-29 03:42:40,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:40,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201799550] [2020-10-29 03:42:40,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:40,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:41,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:45,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:45,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:42:45,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:42:45,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:42:45,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:45,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:42:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 03:42:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 03:42:45,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:45,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:45,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:45,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:45,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:45,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:45,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:45,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:45,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:45,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:45,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 03:42:45,569 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-29 03:42:45,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201799550] [2020-10-29 03:42:45,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:45,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:42:45,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860472418] [2020-10-29 03:42:45,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:42:45,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:45,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:42:45,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:42:45,574 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 11 states. [2020-10-29 03:42:45,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:45,997 INFO L93 Difference]: Finished difference Result 155 states and 175 transitions. [2020-10-29 03:42:45,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:42:45,998 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-29 03:42:45,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:45,999 INFO L225 Difference]: With dead ends: 155 [2020-10-29 03:42:45,999 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 03:42:46,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:42:46,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 03:42:46,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-10-29 03:42:46,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-29 03:42:46,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2020-10-29 03:42:46,010 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 76 [2020-10-29 03:42:46,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:46,010 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2020-10-29 03:42:46,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:42:46,011 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2020-10-29 03:42:46,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 03:42:46,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:46,012 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:46,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:42:46,012 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:46,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:46,017 INFO L82 PathProgramCache]: Analyzing trace with hash -705536890, now seen corresponding path program 8 times [2020-10-29 03:42:46,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:46,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849912545] [2020-10-29 03:42:46,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:46,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:51,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 03:42:51,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:42:51,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:42:51,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:51,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:42:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:42:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:42:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:51,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:51,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:51,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:51,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:51,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:42:51,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:51,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:51,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:51,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:51,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:51,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:51,277 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-10-29 03:42:51,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849912545] [2020-10-29 03:42:51,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:51,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:42:51,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071303805] [2020-10-29 03:42:51,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:42:51,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:51,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:42:51,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:42:51,291 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand 12 states. [2020-10-29 03:42:51,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:51,670 INFO L93 Difference]: Finished difference Result 168 states and 188 transitions. [2020-10-29 03:42:51,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:42:51,670 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-10-29 03:42:51,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:51,671 INFO L225 Difference]: With dead ends: 168 [2020-10-29 03:42:51,671 INFO L226 Difference]: Without dead ends: 95 [2020-10-29 03:42:51,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:42:51,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-29 03:42:51,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-29 03:42:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 03:42:51,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2020-10-29 03:42:51,692 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 83 [2020-10-29 03:42:51,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:51,693 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2020-10-29 03:42:51,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:42:51,693 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2020-10-29 03:42:51,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 03:42:51,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:51,699 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:51,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:42:51,699 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:51,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:51,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1418917617, now seen corresponding path program 9 times [2020-10-29 03:42:51,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:51,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606241354] [2020-10-29 03:42:51,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:51,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:56,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:56,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 03:42:56,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:42:56,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:42:56,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:56,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:56,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:42:56,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 03:42:56,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 03:42:56,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:56,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:56,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:56,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:56,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:56,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:56,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:56,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:56,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:56,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-10-29 03:42:56,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606241354] [2020-10-29 03:42:56,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:56,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:42:56,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759916708] [2020-10-29 03:42:56,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:42:56,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:56,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:42:56,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:42:56,953 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand 13 states. [2020-10-29 03:42:57,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:57,337 INFO L93 Difference]: Finished difference Result 181 states and 201 transitions. [2020-10-29 03:42:57,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:42:57,339 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 90 [2020-10-29 03:42:57,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:57,340 INFO L225 Difference]: With dead ends: 181 [2020-10-29 03:42:57,340 INFO L226 Difference]: Without dead ends: 102 [2020-10-29 03:42:57,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:42:57,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-29 03:42:57,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-10-29 03:42:57,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-29 03:42:57,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2020-10-29 03:42:57,360 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 90 [2020-10-29 03:42:57,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:57,361 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2020-10-29 03:42:57,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:42:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2020-10-29 03:42:57,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 03:42:57,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:57,365 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:57,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:42:57,365 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:57,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:57,366 INFO L82 PathProgramCache]: Analyzing trace with hash 799321638, now seen corresponding path program 10 times [2020-10-29 03:42:57,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:57,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380986412] [2020-10-29 03:42:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:57,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:57,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:57,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:57,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:57,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:02,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:02,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 03:43:02,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:02,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:43:02,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:02,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:43:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-29 03:43:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:43:02,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:02,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:02,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:02,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:02,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:02,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:02,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:02,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:02,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:02,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:02,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:02,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:02,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:02,671 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-10-29 03:43:02,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380986412] [2020-10-29 03:43:02,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:02,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:43:02,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792140999] [2020-10-29 03:43:02,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:43:02,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:02,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:43:02,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:43:02,674 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand 14 states. [2020-10-29 03:43:03,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:03,005 INFO L93 Difference]: Finished difference Result 194 states and 214 transitions. [2020-10-29 03:43:03,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:43:03,006 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 97 [2020-10-29 03:43:03,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:03,007 INFO L225 Difference]: With dead ends: 194 [2020-10-29 03:43:03,007 INFO L226 Difference]: Without dead ends: 109 [2020-10-29 03:43:03,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:43:03,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-29 03:43:03,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-29 03:43:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-29 03:43:03,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2020-10-29 03:43:03,023 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 97 [2020-10-29 03:43:03,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:03,023 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2020-10-29 03:43:03,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:43:03,023 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2020-10-29 03:43:03,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 03:43:03,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:03,026 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:03,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:43:03,027 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:03,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:03,027 INFO L82 PathProgramCache]: Analyzing trace with hash -238096815, now seen corresponding path program 11 times [2020-10-29 03:43:03,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:03,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823584450] [2020-10-29 03:43:03,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:03,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:03,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:03,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:03,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:03,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:08,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:08,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 03:43:08,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:08,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:43:08,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:08,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:43:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:43:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:43:08,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:08,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:08,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:08,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:08,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:08,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:08,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:08,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:08,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:08,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:08,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:08,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:08,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2020-10-29 03:43:08,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823584450] [2020-10-29 03:43:08,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:08,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:43:08,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56699741] [2020-10-29 03:43:08,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:43:08,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:08,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:43:08,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:43:08,342 INFO L87 Difference]: Start difference. First operand 109 states and 116 transitions. Second operand 15 states. [2020-10-29 03:43:08,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:08,794 INFO L93 Difference]: Finished difference Result 207 states and 227 transitions. [2020-10-29 03:43:08,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:43:08,795 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 104 [2020-10-29 03:43:08,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:08,796 INFO L225 Difference]: With dead ends: 207 [2020-10-29 03:43:08,796 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 03:43:08,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:43:08,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 03:43:08,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-29 03:43:08,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-29 03:43:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions. [2020-10-29 03:43:08,812 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 104 [2020-10-29 03:43:08,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:08,813 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 123 transitions. [2020-10-29 03:43:08,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:43:08,813 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 123 transitions. [2020-10-29 03:43:08,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 03:43:08,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:08,817 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:08,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:43:08,817 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:08,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:08,818 INFO L82 PathProgramCache]: Analyzing trace with hash -355342394, now seen corresponding path program 12 times [2020-10-29 03:43:08,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:08,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202826475] [2020-10-29 03:43:08,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:08,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:08,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:08,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:09,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:09,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:13,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:13,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 03:43:13,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:13,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:43:13,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:13,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:43:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 03:43:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:43:13,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:14,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:14,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:14,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:14,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:14,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:14,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:43:14,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:14,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:14,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2020-10-29 03:43:14,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202826475] [2020-10-29 03:43:14,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:14,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:43:14,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146226669] [2020-10-29 03:43:14,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:43:14,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:14,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:43:14,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:43:14,241 INFO L87 Difference]: Start difference. First operand 116 states and 123 transitions. Second operand 16 states. [2020-10-29 03:43:14,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:14,851 INFO L93 Difference]: Finished difference Result 220 states and 240 transitions. [2020-10-29 03:43:14,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:43:14,852 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 111 [2020-10-29 03:43:14,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:14,853 INFO L225 Difference]: With dead ends: 220 [2020-10-29 03:43:14,853 INFO L226 Difference]: Without dead ends: 123 [2020-10-29 03:43:14,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:43:14,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-29 03:43:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-29 03:43:14,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-29 03:43:14,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 130 transitions. [2020-10-29 03:43:14,867 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 130 transitions. Word has length 111 [2020-10-29 03:43:14,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:14,869 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 130 transitions. [2020-10-29 03:43:14,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:43:14,869 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 130 transitions. [2020-10-29 03:43:14,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 03:43:14,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:14,872 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:14,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:43:14,872 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:14,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:14,873 INFO L82 PathProgramCache]: Analyzing trace with hash -202211919, now seen corresponding path program 13 times [2020-10-29 03:43:14,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:14,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497371823] [2020-10-29 03:43:14,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:14,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:15,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:15,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:15,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:15,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:19,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:19,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 03:43:19,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:19,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:43:19,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:19,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:19,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:43:19,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-29 03:43:19,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 03:43:19,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:20,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:20,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:20,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:20,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:20,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:20,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:20,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:20,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:20,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:20,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:20,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:20,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:20,330 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2020-10-29 03:43:20,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497371823] [2020-10-29 03:43:20,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:20,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:43:20,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725210839] [2020-10-29 03:43:20,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:43:20,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:20,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:43:20,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:43:20,333 INFO L87 Difference]: Start difference. First operand 123 states and 130 transitions. Second operand 17 states. [2020-10-29 03:43:20,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:20,818 INFO L93 Difference]: Finished difference Result 233 states and 253 transitions. [2020-10-29 03:43:20,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:43:20,818 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 118 [2020-10-29 03:43:20,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:20,820 INFO L225 Difference]: With dead ends: 233 [2020-10-29 03:43:20,820 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 03:43:20,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:43:20,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 03:43:20,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-10-29 03:43:20,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-29 03:43:20,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 137 transitions. [2020-10-29 03:43:20,828 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 137 transitions. Word has length 118 [2020-10-29 03:43:20,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:20,829 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 137 transitions. [2020-10-29 03:43:20,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:43:20,829 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 137 transitions. [2020-10-29 03:43:20,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 03:43:20,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:20,830 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:20,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:43:20,831 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:20,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:20,831 INFO L82 PathProgramCache]: Analyzing trace with hash 181143910, now seen corresponding path program 14 times [2020-10-29 03:43:20,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:20,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099223157] [2020-10-29 03:43:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:20,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:20,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:21,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:21,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:21,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:25,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:25,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 03:43:25,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:25,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:43:25,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:25,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:43:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 03:43:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:43:25,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:26,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:26,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:26,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:26,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:26,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:26,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:26,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:26,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:26,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:26,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:26,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:26,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2020-10-29 03:43:26,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099223157] [2020-10-29 03:43:26,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:26,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:43:26,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410401135] [2020-10-29 03:43:26,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:43:26,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:26,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:43:26,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:43:26,335 INFO L87 Difference]: Start difference. First operand 130 states and 137 transitions. Second operand 18 states. [2020-10-29 03:43:26,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:26,837 INFO L93 Difference]: Finished difference Result 246 states and 266 transitions. [2020-10-29 03:43:26,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:43:26,838 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 125 [2020-10-29 03:43:26,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:26,839 INFO L225 Difference]: With dead ends: 246 [2020-10-29 03:43:26,839 INFO L226 Difference]: Without dead ends: 137 [2020-10-29 03:43:26,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:43:26,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-29 03:43:26,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-10-29 03:43:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-29 03:43:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 144 transitions. [2020-10-29 03:43:26,855 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 144 transitions. Word has length 125 [2020-10-29 03:43:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:26,855 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 144 transitions. [2020-10-29 03:43:26,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:43:26,855 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 144 transitions. [2020-10-29 03:43:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 03:43:26,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:26,859 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:26,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:43:26,859 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:26,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:26,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1575724305, now seen corresponding path program 15 times [2020-10-29 03:43:26,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:26,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697057834] [2020-10-29 03:43:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:26,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:26,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:27,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:27,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:27,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:31,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:31,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 03:43:31,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:31,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:43:31,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:31,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:31,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:43:31,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:43:31,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:43:31,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:32,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:32,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:32,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:32,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:32,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:32,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:32,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:32,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:32,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:32,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:32,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:32,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2020-10-29 03:43:32,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697057834] [2020-10-29 03:43:32,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:32,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:43:32,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721097545] [2020-10-29 03:43:32,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:43:32,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:32,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:43:32,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:43:32,409 INFO L87 Difference]: Start difference. First operand 137 states and 144 transitions. Second operand 19 states. [2020-10-29 03:43:33,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:33,051 INFO L93 Difference]: Finished difference Result 259 states and 279 transitions. [2020-10-29 03:43:33,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:43:33,051 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 132 [2020-10-29 03:43:33,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:33,054 INFO L225 Difference]: With dead ends: 259 [2020-10-29 03:43:33,054 INFO L226 Difference]: Without dead ends: 144 [2020-10-29 03:43:33,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:43:33,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-29 03:43:33,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-29 03:43:33,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-29 03:43:33,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 151 transitions. [2020-10-29 03:43:33,064 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 151 transitions. Word has length 132 [2020-10-29 03:43:33,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:33,064 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 151 transitions. [2020-10-29 03:43:33,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:43:33,064 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 151 transitions. [2020-10-29 03:43:33,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 03:43:33,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:33,066 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:33,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:43:33,066 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:33,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:33,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1701122822, now seen corresponding path program 16 times [2020-10-29 03:43:33,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:33,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104168055] [2020-10-29 03:43:33,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:33,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:33,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:33,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:33,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:33,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:38,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:38,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 03:43:38,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:38,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:43:38,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:38,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:38,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:43:38,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 03:43:38,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:43:38,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:38,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:38,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:38,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:38,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:38,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:38,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:38,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:38,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:38,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:38,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:38,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2020-10-29 03:43:38,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104168055] [2020-10-29 03:43:38,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:38,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:43:38,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553577253] [2020-10-29 03:43:38,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:43:38,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:38,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:43:38,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:43:38,527 INFO L87 Difference]: Start difference. First operand 144 states and 151 transitions. Second operand 20 states. [2020-10-29 03:43:39,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:39,273 INFO L93 Difference]: Finished difference Result 272 states and 292 transitions. [2020-10-29 03:43:39,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:43:39,274 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 139 [2020-10-29 03:43:39,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:39,276 INFO L225 Difference]: With dead ends: 272 [2020-10-29 03:43:39,276 INFO L226 Difference]: Without dead ends: 151 [2020-10-29 03:43:39,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:43:39,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-29 03:43:39,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-10-29 03:43:39,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-29 03:43:39,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 158 transitions. [2020-10-29 03:43:39,286 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 158 transitions. Word has length 139 [2020-10-29 03:43:39,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:39,287 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 158 transitions. [2020-10-29 03:43:39,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:43:39,287 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 158 transitions. [2020-10-29 03:43:39,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 03:43:39,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:39,288 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:39,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:43:39,289 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:39,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:39,289 INFO L82 PathProgramCache]: Analyzing trace with hash -265788303, now seen corresponding path program 17 times [2020-10-29 03:43:39,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:39,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493822873] [2020-10-29 03:43:39,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:39,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:39,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:39,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:39,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:40,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:44,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:44,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 03:43:44,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:44,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 03:43:44,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:44,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:44,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:43:44,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-29 03:43:44,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:43:44,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:44,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:44,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:44,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:44,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:44,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:44,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:44,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:44,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:44,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:44,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:44,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:44,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:44,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2020-10-29 03:43:44,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493822873] [2020-10-29 03:43:44,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:44,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:43:44,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816592884] [2020-10-29 03:43:44,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:43:44,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:44,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:43:44,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:43:44,899 INFO L87 Difference]: Start difference. First operand 151 states and 158 transitions. Second operand 21 states. [2020-10-29 03:43:45,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:45,617 INFO L93 Difference]: Finished difference Result 285 states and 305 transitions. [2020-10-29 03:43:45,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:43:45,618 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 146 [2020-10-29 03:43:45,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:45,619 INFO L225 Difference]: With dead ends: 285 [2020-10-29 03:43:45,619 INFO L226 Difference]: Without dead ends: 158 [2020-10-29 03:43:45,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:43:45,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-29 03:43:45,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-29 03:43:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-29 03:43:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 165 transitions. [2020-10-29 03:43:45,629 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 165 transitions. Word has length 146 [2020-10-29 03:43:45,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:45,629 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 165 transitions. [2020-10-29 03:43:45,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:43:45,629 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 165 transitions. [2020-10-29 03:43:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-29 03:43:45,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:45,631 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:45,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:43:45,631 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:45,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:45,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1024523098, now seen corresponding path program 18 times [2020-10-29 03:43:45,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:45,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627570075] [2020-10-29 03:43:45,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:45,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:45,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:45,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:45,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:46,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:50,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:50,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 03:43:50,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:50,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:43:50,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:50,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:43:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:43:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:43:50,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:51,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:51,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:51,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:51,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:51,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:51,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:51,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:51,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:51,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:51,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:51,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:51,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1026 trivial. 0 not checked. [2020-10-29 03:43:51,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627570075] [2020-10-29 03:43:51,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:51,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:43:51,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544550096] [2020-10-29 03:43:51,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:43:51,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:51,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:43:51,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:43:51,245 INFO L87 Difference]: Start difference. First operand 158 states and 165 transitions. Second operand 22 states. [2020-10-29 03:43:51,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:51,930 INFO L93 Difference]: Finished difference Result 298 states and 318 transitions. [2020-10-29 03:43:51,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:43:51,931 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 153 [2020-10-29 03:43:51,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:51,932 INFO L225 Difference]: With dead ends: 298 [2020-10-29 03:43:51,932 INFO L226 Difference]: Without dead ends: 165 [2020-10-29 03:43:51,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:43:51,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-29 03:43:51,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-10-29 03:43:51,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-29 03:43:51,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 172 transitions. [2020-10-29 03:43:51,963 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 172 transitions. Word has length 153 [2020-10-29 03:43:51,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:51,963 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 172 transitions. [2020-10-29 03:43:51,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:43:51,963 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 172 transitions. [2020-10-29 03:43:51,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 03:43:51,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:51,965 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:51,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:43:51,966 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:51,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:51,966 INFO L82 PathProgramCache]: Analyzing trace with hash 144096209, now seen corresponding path program 19 times [2020-10-29 03:43:51,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:51,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875806331] [2020-10-29 03:43:51,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:52,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:52,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:52,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:52,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:52,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:57,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:57,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-29 03:43:57,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:57,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 03:43:57,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:57,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:57,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:43:57,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 03:43:57,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 03:43:57,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:57,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:57,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:57,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:57,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:57,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:57,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:57,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:57,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:57,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:57,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:57,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:57,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2020-10-29 03:43:57,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875806331] [2020-10-29 03:43:57,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:57,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:43:57,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597556863] [2020-10-29 03:43:57,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:43:57,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:57,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:43:57,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:43:57,723 INFO L87 Difference]: Start difference. First operand 165 states and 172 transitions. Second operand 23 states. [2020-10-29 03:43:58,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:58,545 INFO L93 Difference]: Finished difference Result 311 states and 331 transitions. [2020-10-29 03:43:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:43:58,545 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 160 [2020-10-29 03:43:58,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:58,547 INFO L225 Difference]: With dead ends: 311 [2020-10-29 03:43:58,548 INFO L226 Difference]: Without dead ends: 172 [2020-10-29 03:43:58,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:43:58,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-29 03:43:58,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-10-29 03:43:58,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-29 03:43:58,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 179 transitions. [2020-10-29 03:43:58,560 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 179 transitions. Word has length 160 [2020-10-29 03:43:58,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:58,561 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 179 transitions. [2020-10-29 03:43:58,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:43:58,561 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 179 transitions. [2020-10-29 03:43:58,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-29 03:43:58,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:58,563 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:43:58,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:43:58,563 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:58,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:58,564 INFO L82 PathProgramCache]: Analyzing trace with hash -29630906, now seen corresponding path program 20 times [2020-10-29 03:43:58,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:58,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373075954] [2020-10-29 03:43:58,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:58,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:58,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:58,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:58,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:59,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:03,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:03,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 03:44:03,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:03,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:44:03,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:03,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:44:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-29 03:44:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:44:03,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:04,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:04,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:04,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:04,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:04,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:04,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:04,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:04,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:04,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1470 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2020-10-29 03:44:04,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373075954] [2020-10-29 03:44:04,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:04,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:44:04,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962898133] [2020-10-29 03:44:04,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:44:04,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:04,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:44:04,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:44:04,385 INFO L87 Difference]: Start difference. First operand 172 states and 179 transitions. Second operand 24 states. [2020-10-29 03:44:05,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:05,180 INFO L93 Difference]: Finished difference Result 324 states and 344 transitions. [2020-10-29 03:44:05,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:44:05,180 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 167 [2020-10-29 03:44:05,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:05,182 INFO L225 Difference]: With dead ends: 324 [2020-10-29 03:44:05,182 INFO L226 Difference]: Without dead ends: 179 [2020-10-29 03:44:05,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:44:05,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-29 03:44:05,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-10-29 03:44:05,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-29 03:44:05,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 186 transitions. [2020-10-29 03:44:05,194 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 186 transitions. Word has length 167 [2020-10-29 03:44:05,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:05,194 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 186 transitions. [2020-10-29 03:44:05,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:44:05,194 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 186 transitions. [2020-10-29 03:44:05,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-29 03:44:05,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:05,196 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:05,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:44:05,196 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:05,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:05,197 INFO L82 PathProgramCache]: Analyzing trace with hash -2103137487, now seen corresponding path program 21 times [2020-10-29 03:44:05,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:05,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967555169] [2020-10-29 03:44:05,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:05,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:05,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:05,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:05,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:06,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:10,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:10,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 03:44:10,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:10,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 03:44:10,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:10,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:10,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:44:10,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 03:44:10,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 03:44:10,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:11,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:11,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:11,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:11,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:11,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:11,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:11,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:11,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:11,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:11,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2020-10-29 03:44:11,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967555169] [2020-10-29 03:44:11,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:11,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:44:11,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623811279] [2020-10-29 03:44:11,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:44:11,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:11,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:44:11,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:44:11,096 INFO L87 Difference]: Start difference. First operand 179 states and 186 transitions. Second operand 25 states. [2020-10-29 03:44:11,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:11,757 INFO L93 Difference]: Finished difference Result 337 states and 357 transitions. [2020-10-29 03:44:11,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:44:11,761 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 174 [2020-10-29 03:44:11,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:11,762 INFO L225 Difference]: With dead ends: 337 [2020-10-29 03:44:11,762 INFO L226 Difference]: Without dead ends: 186 [2020-10-29 03:44:11,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:44:11,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-29 03:44:11,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-10-29 03:44:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-29 03:44:11,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 193 transitions. [2020-10-29 03:44:11,773 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 193 transitions. Word has length 174 [2020-10-29 03:44:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:11,773 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 193 transitions. [2020-10-29 03:44:11,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:44:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 193 transitions. [2020-10-29 03:44:11,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-29 03:44:11,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:11,775 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:11,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:44:11,775 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:11,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:11,775 INFO L82 PathProgramCache]: Analyzing trace with hash 614309862, now seen corresponding path program 22 times [2020-10-29 03:44:11,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:11,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674961991] [2020-10-29 03:44:11,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:11,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:11,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:12,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:12,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:13,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:16,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:16,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-29 03:44:16,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:16,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 03:44:16,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:16,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:16,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:44:16,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-29 03:44:16,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:44:16,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:17,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:17,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:17,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:17,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:17,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:17,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:17,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:17,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:17,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:17,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2020-10-29 03:44:17,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674961991] [2020-10-29 03:44:17,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:17,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:44:17,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190019533] [2020-10-29 03:44:17,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:44:17,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:17,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:44:17,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:44:17,667 INFO L87 Difference]: Start difference. First operand 186 states and 193 transitions. Second operand 26 states. [2020-10-29 03:44:18,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:18,351 INFO L93 Difference]: Finished difference Result 350 states and 370 transitions. [2020-10-29 03:44:18,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:44:18,352 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 181 [2020-10-29 03:44:18,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:18,353 INFO L225 Difference]: With dead ends: 350 [2020-10-29 03:44:18,353 INFO L226 Difference]: Without dead ends: 193 [2020-10-29 03:44:18,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:44:18,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-29 03:44:18,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2020-10-29 03:44:18,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-29 03:44:18,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 200 transitions. [2020-10-29 03:44:18,368 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 200 transitions. Word has length 181 [2020-10-29 03:44:18,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:18,368 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 200 transitions. [2020-10-29 03:44:18,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:44:18,368 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 200 transitions. [2020-10-29 03:44:18,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-29 03:44:18,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:18,370 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:18,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:44:18,370 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:18,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:18,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1757400431, now seen corresponding path program 23 times [2020-10-29 03:44:18,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:18,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060963583] [2020-10-29 03:44:18,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:18,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:18,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:18,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:18,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:19,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:23,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:23,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-29 03:44:23,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:23,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 03:44:23,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:23,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:23,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:44:23,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:44:23,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:44:23,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:24,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:24,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:24,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:24,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:24,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:24,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:24,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:24,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:24,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:24,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:24,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:24,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1932 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 1656 trivial. 0 not checked. [2020-10-29 03:44:24,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060963583] [2020-10-29 03:44:24,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:24,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:44:24,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073230708] [2020-10-29 03:44:24,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:44:24,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:24,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:44:24,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:44:24,352 INFO L87 Difference]: Start difference. First operand 193 states and 200 transitions. Second operand 27 states. [2020-10-29 03:44:25,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:25,160 INFO L93 Difference]: Finished difference Result 363 states and 383 transitions. [2020-10-29 03:44:25,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:44:25,161 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 188 [2020-10-29 03:44:25,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:25,162 INFO L225 Difference]: With dead ends: 363 [2020-10-29 03:44:25,162 INFO L226 Difference]: Without dead ends: 200 [2020-10-29 03:44:25,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:44:25,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-29 03:44:25,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-10-29 03:44:25,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-29 03:44:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 207 transitions. [2020-10-29 03:44:25,173 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 207 transitions. Word has length 188 [2020-10-29 03:44:25,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:25,173 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 207 transitions. [2020-10-29 03:44:25,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:44:25,173 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 207 transitions. [2020-10-29 03:44:25,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-29 03:44:25,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:25,174 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:25,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:44:25,175 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:25,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:25,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1780070010, now seen corresponding path program 24 times [2020-10-29 03:44:25,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:25,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030045133] [2020-10-29 03:44:25,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:25,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:25,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:25,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:25,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:26,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:30,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:30,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-29 03:44:30,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:30,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 03:44:30,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:30,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:44:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:44:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:44:30,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:30,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:30,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:30,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:30,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:30,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:30,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:44:30,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:30,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:30,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:31,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2020-10-29 03:44:31,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030045133] [2020-10-29 03:44:31,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:31,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:44:31,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849230485] [2020-10-29 03:44:31,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:44:31,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:31,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:44:31,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:44:31,017 INFO L87 Difference]: Start difference. First operand 200 states and 207 transitions. Second operand 28 states. [2020-10-29 03:44:31,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:31,909 INFO L93 Difference]: Finished difference Result 376 states and 396 transitions. [2020-10-29 03:44:31,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:44:31,909 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 195 [2020-10-29 03:44:31,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:31,911 INFO L225 Difference]: With dead ends: 376 [2020-10-29 03:44:31,911 INFO L226 Difference]: Without dead ends: 207 [2020-10-29 03:44:31,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:44:31,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-29 03:44:31,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2020-10-29 03:44:31,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-29 03:44:31,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 214 transitions. [2020-10-29 03:44:31,921 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 214 transitions. Word has length 195 [2020-10-29 03:44:31,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:31,923 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 214 transitions. [2020-10-29 03:44:31,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:44:31,923 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 214 transitions. [2020-10-29 03:44:31,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 03:44:31,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:31,925 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:31,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:44:31,925 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:31,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:31,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1126739471, now seen corresponding path program 25 times [2020-10-29 03:44:31,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:31,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253718472] [2020-10-29 03:44:31,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:32,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:32,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:32,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:32,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:33,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:37,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:37,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-29 03:44:37,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:37,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 03:44:37,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:37,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:44:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 03:44:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:44:37,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:37,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:37,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:37,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:37,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:37,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:37,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:44:37,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:37,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:37,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:37,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:37,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:37,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:37,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2275 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 1950 trivial. 0 not checked. [2020-10-29 03:44:37,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253718472] [2020-10-29 03:44:37,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:37,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:44:37,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580601308] [2020-10-29 03:44:37,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:44:37,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:37,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:44:37,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:44:37,818 INFO L87 Difference]: Start difference. First operand 207 states and 214 transitions. Second operand 29 states. [2020-10-29 03:44:38,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:38,686 INFO L93 Difference]: Finished difference Result 389 states and 409 transitions. [2020-10-29 03:44:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:44:38,688 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 202 [2020-10-29 03:44:38,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:38,690 INFO L225 Difference]: With dead ends: 389 [2020-10-29 03:44:38,690 INFO L226 Difference]: Without dead ends: 214 [2020-10-29 03:44:38,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:44:38,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-29 03:44:38,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-29 03:44:38,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-29 03:44:38,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 221 transitions. [2020-10-29 03:44:38,701 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 221 transitions. Word has length 202 [2020-10-29 03:44:38,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:38,701 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 221 transitions. [2020-10-29 03:44:38,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:44:38,701 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 221 transitions. [2020-10-29 03:44:38,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-29 03:44:38,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:38,703 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:38,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:44:38,703 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:38,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:38,703 INFO L82 PathProgramCache]: Analyzing trace with hash 610786086, now seen corresponding path program 26 times [2020-10-29 03:44:38,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:38,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471878471] [2020-10-29 03:44:38,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:38,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:38,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:39,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:39,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:40,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:43,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:43,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 03:44:43,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:43,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 03:44:43,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:43,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:44:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 03:44:43,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:44:43,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:44,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:44,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:44,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:44,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:44,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:44,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:44,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:44,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:44,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2457 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 2106 trivial. 0 not checked. [2020-10-29 03:44:44,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471878471] [2020-10-29 03:44:44,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:44,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:44:44,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394625054] [2020-10-29 03:44:44,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:44:44,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:44,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:44:44,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:44:44,877 INFO L87 Difference]: Start difference. First operand 214 states and 221 transitions. Second operand 30 states. [2020-10-29 03:44:45,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:45,780 INFO L93 Difference]: Finished difference Result 402 states and 422 transitions. [2020-10-29 03:44:45,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:44:45,781 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 209 [2020-10-29 03:44:45,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:45,783 INFO L225 Difference]: With dead ends: 402 [2020-10-29 03:44:45,783 INFO L226 Difference]: Without dead ends: 221 [2020-10-29 03:44:45,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:44:45,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-29 03:44:45,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2020-10-29 03:44:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-29 03:44:45,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 228 transitions. [2020-10-29 03:44:45,795 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 228 transitions. Word has length 209 [2020-10-29 03:44:45,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:45,796 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 228 transitions. [2020-10-29 03:44:45,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:44:45,796 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 228 transitions. [2020-10-29 03:44:45,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-29 03:44:45,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:45,797 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:45,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:44:45,797 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:45,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:45,798 INFO L82 PathProgramCache]: Analyzing trace with hash -2024273583, now seen corresponding path program 27 times [2020-10-29 03:44:45,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:45,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358130588] [2020-10-29 03:44:45,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:45,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:46,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:46,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:46,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:47,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:50,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:50,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-29 03:44:50,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:50,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 03:44:50,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:50,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:44:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 03:44:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:44:50,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:52,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:52,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:52,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:52,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:52,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:52,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:52,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:52,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:52,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2646 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2268 trivial. 0 not checked. [2020-10-29 03:44:52,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358130588] [2020-10-29 03:44:52,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:52,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:44:52,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429719634] [2020-10-29 03:44:52,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:44:52,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:52,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:44:52,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:44:52,111 INFO L87 Difference]: Start difference. First operand 221 states and 228 transitions. Second operand 31 states. [2020-10-29 03:44:53,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:53,108 INFO L93 Difference]: Finished difference Result 415 states and 435 transitions. [2020-10-29 03:44:53,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:44:53,108 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 216 [2020-10-29 03:44:53,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:53,111 INFO L225 Difference]: With dead ends: 415 [2020-10-29 03:44:53,111 INFO L226 Difference]: Without dead ends: 228 [2020-10-29 03:44:53,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:44:53,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-29 03:44:53,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-10-29 03:44:53,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-29 03:44:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 235 transitions. [2020-10-29 03:44:53,122 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 235 transitions. Word has length 216 [2020-10-29 03:44:53,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:53,122 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 235 transitions. [2020-10-29 03:44:53,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:44:53,122 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 235 transitions. [2020-10-29 03:44:53,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-29 03:44:53,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:53,124 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:44:53,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:44:53,124 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:53,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:53,124 INFO L82 PathProgramCache]: Analyzing trace with hash 888427718, now seen corresponding path program 28 times [2020-10-29 03:44:53,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:53,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856317146] [2020-10-29 03:44:53,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:53,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:53,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:53,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:53,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:55,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:58,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:58,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-29 03:44:58,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:44:58,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:44:58,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:58,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:44:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-29 03:44:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:44:58,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:59,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:59,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:59,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:59,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:59,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:59,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:59,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:59,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:59,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2842 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 2436 trivial. 0 not checked. [2020-10-29 03:44:59,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856317146] [2020-10-29 03:44:59,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:59,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:44:59,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811953029] [2020-10-29 03:44:59,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:44:59,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:59,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:44:59,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:44:59,492 INFO L87 Difference]: Start difference. First operand 228 states and 235 transitions. Second operand 32 states. [2020-10-29 03:45:00,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:00,675 INFO L93 Difference]: Finished difference Result 428 states and 448 transitions. [2020-10-29 03:45:00,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:45:00,676 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 223 [2020-10-29 03:45:00,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:00,678 INFO L225 Difference]: With dead ends: 428 [2020-10-29 03:45:00,678 INFO L226 Difference]: Without dead ends: 235 [2020-10-29 03:45:00,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:45:00,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-29 03:45:00,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2020-10-29 03:45:00,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-29 03:45:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 242 transitions. [2020-10-29 03:45:00,689 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 242 transitions. Word has length 223 [2020-10-29 03:45:00,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:00,689 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 242 transitions. [2020-10-29 03:45:00,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:45:00,689 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 242 transitions. [2020-10-29 03:45:00,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-29 03:45:00,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:00,691 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:00,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:45:00,691 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:00,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:00,692 INFO L82 PathProgramCache]: Analyzing trace with hash -2010097487, now seen corresponding path program 29 times [2020-10-29 03:45:00,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:00,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656329583] [2020-10-29 03:45:00,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:00,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:00,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:01,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:01,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:02,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:05,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:05,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 03:45:05,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:45:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:45:05,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:05,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:05,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:45:05,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 03:45:05,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:45:05,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:07,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:07,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:07,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:07,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:07,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:07,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:07,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:07,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:07,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:07,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:07,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:07,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 2610 trivial. 0 not checked. [2020-10-29 03:45:07,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656329583] [2020-10-29 03:45:07,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:07,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:45:07,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492580539] [2020-10-29 03:45:07,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:45:07,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:07,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:45:07,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:45:07,095 INFO L87 Difference]: Start difference. First operand 235 states and 242 transitions. Second operand 33 states. [2020-10-29 03:45:07,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:07,913 INFO L93 Difference]: Finished difference Result 441 states and 461 transitions. [2020-10-29 03:45:07,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:45:07,913 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 230 [2020-10-29 03:45:07,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:07,915 INFO L225 Difference]: With dead ends: 441 [2020-10-29 03:45:07,915 INFO L226 Difference]: Without dead ends: 242 [2020-10-29 03:45:07,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:45:07,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-29 03:45:07,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-10-29 03:45:07,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-29 03:45:07,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 249 transitions. [2020-10-29 03:45:07,926 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 249 transitions. Word has length 230 [2020-10-29 03:45:07,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:07,926 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 249 transitions. [2020-10-29 03:45:07,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:45:07,927 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 249 transitions. [2020-10-29 03:45:07,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-29 03:45:07,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:07,929 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:07,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:45:07,929 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:07,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:07,929 INFO L82 PathProgramCache]: Analyzing trace with hash -555895194, now seen corresponding path program 30 times [2020-10-29 03:45:07,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:07,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567178105] [2020-10-29 03:45:07,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:08,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:08,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:08,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:08,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:10,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:13,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:13,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-29 03:45:13,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:45:13,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 03:45:13,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:13,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:45:13,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-29 03:45:13,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:45:13,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:14,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:14,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:14,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:14,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:14,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:14,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:14,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:14,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:14,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:14,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:14,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:14,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:14,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3255 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2020-10-29 03:45:14,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567178105] [2020-10-29 03:45:14,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:14,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:45:14,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63714016] [2020-10-29 03:45:14,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:45:14,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:14,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:45:14,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:45:14,507 INFO L87 Difference]: Start difference. First operand 242 states and 249 transitions. Second operand 34 states. [2020-10-29 03:45:15,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:15,686 INFO L93 Difference]: Finished difference Result 454 states and 474 transitions. [2020-10-29 03:45:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:45:15,687 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 237 [2020-10-29 03:45:15,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:15,688 INFO L225 Difference]: With dead ends: 454 [2020-10-29 03:45:15,688 INFO L226 Difference]: Without dead ends: 249 [2020-10-29 03:45:15,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:45:15,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-29 03:45:15,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2020-10-29 03:45:15,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-29 03:45:15,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 256 transitions. [2020-10-29 03:45:15,699 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 256 transitions. Word has length 237 [2020-10-29 03:45:15,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:15,700 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 256 transitions. [2020-10-29 03:45:15,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:45:15,700 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 256 transitions. [2020-10-29 03:45:15,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-29 03:45:15,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:15,701 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:15,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:45:15,702 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:15,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:15,702 INFO L82 PathProgramCache]: Analyzing trace with hash 776880145, now seen corresponding path program 31 times [2020-10-29 03:45:15,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:15,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188491128] [2020-10-29 03:45:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:15,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:16,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:16,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:16,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:18,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:20,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:20,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-29 03:45:20,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:45:20,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:45:20,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:20,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:45:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:45:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:45:20,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:22,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:22,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:22,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:22,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:22,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:22,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:22,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:22,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:22,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:22,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:22,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:22,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3472 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 2976 trivial. 0 not checked. [2020-10-29 03:45:22,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188491128] [2020-10-29 03:45:22,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:22,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:45:22,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957380569] [2020-10-29 03:45:22,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:45:22,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:22,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:45:22,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:45:22,321 INFO L87 Difference]: Start difference. First operand 249 states and 256 transitions. Second operand 35 states. [2020-10-29 03:45:23,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:23,431 INFO L93 Difference]: Finished difference Result 467 states and 487 transitions. [2020-10-29 03:45:23,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:45:23,431 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 244 [2020-10-29 03:45:23,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:23,433 INFO L225 Difference]: With dead ends: 467 [2020-10-29 03:45:23,433 INFO L226 Difference]: Without dead ends: 256 [2020-10-29 03:45:23,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:45:23,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-29 03:45:23,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2020-10-29 03:45:23,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-29 03:45:23,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 263 transitions. [2020-10-29 03:45:23,444 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 263 transitions. Word has length 244 [2020-10-29 03:45:23,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:23,444 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 263 transitions. [2020-10-29 03:45:23,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:45:23,444 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 263 transitions. [2020-10-29 03:45:23,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-29 03:45:23,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:23,446 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:23,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:45:23,446 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:23,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:23,447 INFO L82 PathProgramCache]: Analyzing trace with hash 200671238, now seen corresponding path program 32 times [2020-10-29 03:45:23,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:23,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693553451] [2020-10-29 03:45:23,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:23,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:23,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:24,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:26,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:28,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:28,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-29 03:45:28,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:45:28,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 03:45:28,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:28,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:45:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 03:45:28,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:45:28,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:30,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:30,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:30,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:30,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:30,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:30,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:30,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:30,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:30,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:30,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:30,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:30,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:30,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3696 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3168 trivial. 0 not checked. [2020-10-29 03:45:30,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693553451] [2020-10-29 03:45:30,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:30,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:45:30,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132302705] [2020-10-29 03:45:30,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:45:30,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:30,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:45:30,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:45:30,196 INFO L87 Difference]: Start difference. First operand 256 states and 263 transitions. Second operand 36 states. [2020-10-29 03:45:31,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:31,493 INFO L93 Difference]: Finished difference Result 480 states and 500 transitions. [2020-10-29 03:45:31,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:45:31,493 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 251 [2020-10-29 03:45:31,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:31,496 INFO L225 Difference]: With dead ends: 480 [2020-10-29 03:45:31,496 INFO L226 Difference]: Without dead ends: 263 [2020-10-29 03:45:31,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:45:31,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-29 03:45:31,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2020-10-29 03:45:31,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-29 03:45:31,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 270 transitions. [2020-10-29 03:45:31,506 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 270 transitions. Word has length 251 [2020-10-29 03:45:31,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:31,507 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 270 transitions. [2020-10-29 03:45:31,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:45:31,507 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 270 transitions. [2020-10-29 03:45:31,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-29 03:45:31,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:31,508 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:31,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:45:31,509 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:31,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:31,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1507868815, now seen corresponding path program 33 times [2020-10-29 03:45:31,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:31,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105319399] [2020-10-29 03:45:31,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:31,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:31,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:32,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:32,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:34,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:36,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:36,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-29 03:45:36,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:45:36,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:45:36,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:36,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:36,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:45:36,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:45:36,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:45:36,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:38,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:38,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:38,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:38,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:38,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:38,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:38,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:38,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:38,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:38,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:38,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:38,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3927 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3366 trivial. 0 not checked. [2020-10-29 03:45:38,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105319399] [2020-10-29 03:45:38,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:38,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:45:38,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554326652] [2020-10-29 03:45:38,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:45:38,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:38,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:45:38,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:45:38,272 INFO L87 Difference]: Start difference. First operand 263 states and 270 transitions. Second operand 37 states. [2020-10-29 03:45:39,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:39,541 INFO L93 Difference]: Finished difference Result 493 states and 513 transitions. [2020-10-29 03:45:39,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:45:39,545 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 258 [2020-10-29 03:45:39,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:39,546 INFO L225 Difference]: With dead ends: 493 [2020-10-29 03:45:39,547 INFO L226 Difference]: Without dead ends: 270 [2020-10-29 03:45:39,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:45:39,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-29 03:45:39,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2020-10-29 03:45:39,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-29 03:45:39,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 277 transitions. [2020-10-29 03:45:39,558 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 277 transitions. Word has length 258 [2020-10-29 03:45:39,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:39,558 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 277 transitions. [2020-10-29 03:45:39,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:45:39,558 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 277 transitions. [2020-10-29 03:45:39,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-29 03:45:39,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:39,560 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:39,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:45:39,560 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:39,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:39,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1735446106, now seen corresponding path program 34 times [2020-10-29 03:45:39,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:39,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488927805] [2020-10-29 03:45:39,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:39,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:39,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:40,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:40,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:43,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:44,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:44,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 03:45:44,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:45:44,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-29 03:45:44,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:44,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:45:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-29 03:45:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:45:44,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:46,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:46,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:46,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:46,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:46,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:46,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:46,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:46,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:46,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:46,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:46,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:46,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:46,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4165 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 3570 trivial. 0 not checked. [2020-10-29 03:45:46,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488927805] [2020-10-29 03:45:46,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:46,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:45:46,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640381480] [2020-10-29 03:45:46,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:45:46,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:46,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:45:46,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:45:46,385 INFO L87 Difference]: Start difference. First operand 270 states and 277 transitions. Second operand 38 states. [2020-10-29 03:45:47,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:47,783 INFO L93 Difference]: Finished difference Result 506 states and 526 transitions. [2020-10-29 03:45:47,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:45:47,787 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 265 [2020-10-29 03:45:47,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:47,789 INFO L225 Difference]: With dead ends: 506 [2020-10-29 03:45:47,789 INFO L226 Difference]: Without dead ends: 277 [2020-10-29 03:45:47,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:45:47,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-29 03:45:47,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2020-10-29 03:45:47,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-29 03:45:47,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 284 transitions. [2020-10-29 03:45:47,799 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 284 transitions. Word has length 265 [2020-10-29 03:45:47,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:47,800 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 284 transitions. [2020-10-29 03:45:47,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:45:47,800 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 284 transitions. [2020-10-29 03:45:47,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-29 03:45:47,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:47,802 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:45:47,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:45:47,802 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:47,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:47,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1181559087, now seen corresponding path program 35 times [2020-10-29 03:45:47,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:47,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330091541] [2020-10-29 03:45:47,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:47,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:48,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:48,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:48,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:51,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:52,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:52,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-29 03:45:52,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:45:52,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:45:52,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:52,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:52,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 03:45:52,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 03:45:52,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 03:45:52,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:54,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:54,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:54,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:54,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:54,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:54,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:54,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:54,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:54,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:54,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:54,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:54,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:54,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4410 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 3780 trivial. 0 not checked. [2020-10-29 03:45:54,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330091541] [2020-10-29 03:45:54,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:54,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 03:45:54,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053925837] [2020-10-29 03:45:54,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 03:45:54,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:54,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 03:45:54,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:45:54,667 INFO L87 Difference]: Start difference. First operand 277 states and 284 transitions. Second operand 39 states.