/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_copy8_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:34:52,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:34:52,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:34:52,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:34:52,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:34:52,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:34:52,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:34:52,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:34:52,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:34:52,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:34:52,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:34:52,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:34:52,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:34:52,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:34:52,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:34:52,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:34:52,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:34:52,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:34:52,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:34:52,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:34:52,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:34:52,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:34:52,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:34:52,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:34:52,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:34:52,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:34:52,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:34:52,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:34:52,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:34:52,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:34:52,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:34:52,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:34:52,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:34:52,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:34:52,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:34:52,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:34:52,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:34:52,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:34:52,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:34:52,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:34:52,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:34:52,489 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 03:34:52,545 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:34:52,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:34:52,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:34:52,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:34:52,551 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:34:52,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:34:52,551 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:34:52,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:34:52,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:34:52,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:34:52,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:34:52,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:34:52,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:34:52,554 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:34:52,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:34:52,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:34:52,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:34:52,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:34:52,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:34:52,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:34:52,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:34:52,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:34:52,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:34:52,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:34:52,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:34:52,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:34:52,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:34:52,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:34:52,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:34:52,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:34:52,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:34:52,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:34:52,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:34:52,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:34:52,991 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:34:52,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy8_ground-2.i [2020-10-29 03:34:53,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8b83572e/b1606cb7e3ff443ca4a2a0f40be1d04a/FLAG740392814 [2020-10-29 03:34:53,720 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:34:53,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copy8_ground-2.i [2020-10-29 03:34:53,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8b83572e/b1606cb7e3ff443ca4a2a0f40be1d04a/FLAG740392814 [2020-10-29 03:34:54,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8b83572e/b1606cb7e3ff443ca4a2a0f40be1d04a [2020-10-29 03:34:54,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:34:54,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:34:54,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:34:54,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:34:54,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:34:54,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:34:54" (1/1) ... [2020-10-29 03:34:54,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@141cb667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:54, skipping insertion in model container [2020-10-29 03:34:54,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:34:54" (1/1) ... [2020-10-29 03:34:54,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:34:54,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:34:54,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:34:54,350 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:34:54,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:34:54,396 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:34:54,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:54 WrapperNode [2020-10-29 03:34:54,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:34:54,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:34:54,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:34:54,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:34:54,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:54" (1/1) ... [2020-10-29 03:34:54,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:54" (1/1) ... [2020-10-29 03:34:54,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:54" (1/1) ... [2020-10-29 03:34:54,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:54" (1/1) ... [2020-10-29 03:34:54,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:54" (1/1) ... [2020-10-29 03:34:54,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:54" (1/1) ... [2020-10-29 03:34:54,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:54" (1/1) ... [2020-10-29 03:34:54,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:34:54,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:34:54,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:34:54,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:34:54,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:54" (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 03:34:54,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:34:54,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:34:54,518 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:34:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:34:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:34:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:34:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:34:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:34:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:34:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:34:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:34:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:34:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:34:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:34:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:34:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:34:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:34:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:34:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:34:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:34:55,148 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:34:55,148 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-29 03:34:55,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:34:55 BoogieIcfgContainer [2020-10-29 03:34:55,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:34:55,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:34:55,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:34:55,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:34:55,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:34:54" (1/3) ... [2020-10-29 03:34:55,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e55b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:34:55, skipping insertion in model container [2020-10-29 03:34:55,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:34:54" (2/3) ... [2020-10-29 03:34:55,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e55b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:34:55, skipping insertion in model container [2020-10-29 03:34:55,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:34:55" (3/3) ... [2020-10-29 03:34:55,160 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copy8_ground-2.i [2020-10-29 03:34:55,173 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:34:55,179 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:34:55,193 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:34:55,221 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:34:55,222 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:34:55,222 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:34:55,222 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:34:55,222 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:34:55,222 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:34:55,223 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:34:55,223 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:34:55,242 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-10-29 03:34:55,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 03:34:55,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:55,250 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] [2020-10-29 03:34:55,250 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:55,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:55,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1242794554, now seen corresponding path program 1 times [2020-10-29 03:34:55,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:55,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385723293] [2020-10-29 03:34:55,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:55,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:55,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:55,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:55,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:55,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:55,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:55,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:55,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:56,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:58,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:58,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 03:34:58,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:34:58,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2619 [2020-10-29 03:34:58,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:58,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:58,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:34:58,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 03:34:58,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:34:58,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 03:34:58,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:34:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:58,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:58,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:34:58,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:34:58,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:34:58,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:34:58,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:34:58,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:34:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:34:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:34:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:34:58,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:34:58,169 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 03:34:58,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385723293] [2020-10-29 03:34:58,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:34:58,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:34:58,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755892766] [2020-10-29 03:34:58,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:34:58,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:34:58,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:34:58,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:34:58,205 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 4 states. [2020-10-29 03:34:58,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:34:58,479 INFO L93 Difference]: Finished difference Result 111 states and 169 transitions. [2020-10-29 03:34:58,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:34:58,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-29 03:34:58,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:34:58,489 INFO L225 Difference]: With dead ends: 111 [2020-10-29 03:34:58,490 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 03:34:58,493 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 03:34:58,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 03:34:58,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2020-10-29 03:34:58,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 03:34:58,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-10-29 03:34:58,538 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 31 [2020-10-29 03:34:58,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:34:58,539 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-10-29 03:34:58,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:34:58,539 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-10-29 03:34:58,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 03:34:58,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:34:58,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:34:58,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:34:58,542 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:34:58,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:34:58,543 INFO L82 PathProgramCache]: Analyzing trace with hash -2114218722, now seen corresponding path program 1 times [2020-10-29 03:34:58,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:34:58,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599433686] [2020-10-29 03:34:58,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:34:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:34:58,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:58,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:58,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:58,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:58,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:58,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:34:58,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:00,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:03,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:03,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:35:03,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:35:03,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 03:35:03,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:03,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:35:03,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 03:35:03,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:35:03,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:35:03,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:03,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:03,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:03,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:03,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:03,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:03,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:03,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:03,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 03:35:03,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599433686] [2020-10-29 03:35:03,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:03,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:35:03,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543625482] [2020-10-29 03:35:03,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:35:03,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:03,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:35:03,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:35:03,683 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 5 states. [2020-10-29 03:35:04,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:04,030 INFO L93 Difference]: Finished difference Result 118 states and 142 transitions. [2020-10-29 03:35:04,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:35:04,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-29 03:35:04,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:04,033 INFO L225 Difference]: With dead ends: 118 [2020-10-29 03:35:04,034 INFO L226 Difference]: Without dead ends: 77 [2020-10-29 03:35:04,037 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 03:35:04,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-29 03:35:04,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2020-10-29 03:35:04,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 03:35:04,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-29 03:35:04,067 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 47 [2020-10-29 03:35:04,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:04,069 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-29 03:35:04,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:35:04,070 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-29 03:35:04,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 03:35:04,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:04,077 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:35:04,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:35:04,078 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:04,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:04,079 INFO L82 PathProgramCache]: Analyzing trace with hash 926373134, now seen corresponding path program 2 times [2020-10-29 03:35:04,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:04,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737618353] [2020-10-29 03:35:04,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:04,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:04,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:04,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:04,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:04,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:09,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:09,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 03:35:09,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:35:09,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:35:09,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:09,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:09,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:35:09,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 03:35:09,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:35:09,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:09,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:09,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:09,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:09,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:09,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:09,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:35:09,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:09,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:09,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:09,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:09,238 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 03:35:09,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737618353] [2020-10-29 03:35:09,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:09,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:35:09,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140085135] [2020-10-29 03:35:09,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:35:09,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:09,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:35:09,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:35:09,243 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 6 states. [2020-10-29 03:35:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:09,537 INFO L93 Difference]: Finished difference Result 148 states and 172 transitions. [2020-10-29 03:35:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:35:09,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-29 03:35:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:09,539 INFO L225 Difference]: With dead ends: 148 [2020-10-29 03:35:09,540 INFO L226 Difference]: Without dead ends: 93 [2020-10-29 03:35:09,541 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 03:35:09,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-29 03:35:09,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2020-10-29 03:35:09,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 03:35:09,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-10-29 03:35:09,552 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 63 [2020-10-29 03:35:09,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:09,552 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-10-29 03:35:09,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:35:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-10-29 03:35:09,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 03:35:09,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:09,554 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-10-29 03:35:09,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:35:09,555 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:09,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:09,555 INFO L82 PathProgramCache]: Analyzing trace with hash 195294462, now seen corresponding path program 3 times [2020-10-29 03:35:09,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:09,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941473300] [2020-10-29 03:35:09,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:09,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:09,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:09,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:09,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:09,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:09,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:13,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:14,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:14,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 03:35:14,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:35:14,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 03:35:14,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:14,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:14,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:35:14,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 03:35:14,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:35:14,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:35:14,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:14,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:14,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:14,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:14,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:14,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:35:14,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:14,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:14,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:14,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:14,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:14,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:14,712 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 03:35:14,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941473300] [2020-10-29 03:35:14,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:14,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:35:14,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199862892] [2020-10-29 03:35:14,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:35:14,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:14,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:35:14,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:35:14,715 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 7 states. [2020-10-29 03:35:15,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:15,001 INFO L93 Difference]: Finished difference Result 178 states and 202 transitions. [2020-10-29 03:35:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:35:15,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-10-29 03:35:15,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:15,003 INFO L225 Difference]: With dead ends: 178 [2020-10-29 03:35:15,003 INFO L226 Difference]: Without dead ends: 109 [2020-10-29 03:35:15,004 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 03:35:15,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-29 03:35:15,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2020-10-29 03:35:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 03:35:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2020-10-29 03:35:15,029 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 79 [2020-10-29 03:35:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:15,029 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2020-10-29 03:35:15,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:35:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2020-10-29 03:35:15,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 03:35:15,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:15,031 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2020-10-29 03:35:15,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:35:15,034 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:15,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:15,035 INFO L82 PathProgramCache]: Analyzing trace with hash -725519122, now seen corresponding path program 4 times [2020-10-29 03:35:15,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:15,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656036533] [2020-10-29 03:35:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:15,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:15,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:15,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:15,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:15,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:15,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:20,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:20,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 03:35:20,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:20,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 03:35:20,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:20,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:20,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:35:20,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:35:20,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:35:20,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:20,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:20,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:20,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:20,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:20,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:20,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:35:20,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:20,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:20,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:20,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:20,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 03:35:20,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656036533] [2020-10-29 03:35:20,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:20,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:35:20,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860701318] [2020-10-29 03:35:20,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:35:20,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:20,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:35:20,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:35:20,249 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand 8 states. [2020-10-29 03:35:20,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:20,565 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2020-10-29 03:35:20,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:35:20,566 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-29 03:35:20,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:20,567 INFO L225 Difference]: With dead ends: 208 [2020-10-29 03:35:20,568 INFO L226 Difference]: Without dead ends: 125 [2020-10-29 03:35:20,569 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 03:35:20,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-29 03:35:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2020-10-29 03:35:20,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-29 03:35:20,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2020-10-29 03:35:20,580 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 95 [2020-10-29 03:35:20,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:20,580 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2020-10-29 03:35:20,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:35:20,581 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2020-10-29 03:35:20,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 03:35:20,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:20,583 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1] [2020-10-29 03:35:20,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:35:20,584 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:20,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:20,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1812976862, now seen corresponding path program 5 times [2020-10-29 03:35:20,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:20,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226652596] [2020-10-29 03:35:20,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:20,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:20,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:20,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:20,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:20,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:20,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:25,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:25,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 03:35:25,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:25,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-29 03:35:25,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:25,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:35:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:35:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:35:25,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:25,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:25,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:25,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:25,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:25,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:25,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:25,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:25,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:25,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:25,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-29 03:35:25,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226652596] [2020-10-29 03:35:25,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:25,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:35:25,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334530951] [2020-10-29 03:35:25,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:35:25,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:25,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:35:25,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:35:25,786 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand 9 states. [2020-10-29 03:35:26,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:26,151 INFO L93 Difference]: Finished difference Result 238 states and 262 transitions. [2020-10-29 03:35:26,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:35:26,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2020-10-29 03:35:26,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:26,154 INFO L225 Difference]: With dead ends: 238 [2020-10-29 03:35:26,154 INFO L226 Difference]: Without dead ends: 141 [2020-10-29 03:35:26,157 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 03:35:26,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-29 03:35:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2020-10-29 03:35:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-29 03:35:26,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 142 transitions. [2020-10-29 03:35:26,173 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 142 transitions. Word has length 111 [2020-10-29 03:35:26,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:26,174 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 142 transitions. [2020-10-29 03:35:26,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:35:26,174 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 142 transitions. [2020-10-29 03:35:26,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 03:35:26,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:26,176 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1] [2020-10-29 03:35:26,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:35:26,176 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:26,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1357966130, now seen corresponding path program 6 times [2020-10-29 03:35:26,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:26,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757560597] [2020-10-29 03:35:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:26,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:26,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:26,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:26,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:26,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:26,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:31,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:31,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 03:35:31,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:31,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:35:31,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:31,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:31,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:35:31,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-29 03:35:31,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:35:31,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:31,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:31,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:31,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:31,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:31,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:31,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:31,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:31,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:31,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:31,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:31,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:31,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:35:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-29 03:35:31,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757560597] [2020-10-29 03:35:31,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:31,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:35:31,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110776541] [2020-10-29 03:35:31,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:35:31,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:31,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:35:31,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:35:31,353 INFO L87 Difference]: Start difference. First operand 133 states and 142 transitions. Second operand 10 states. [2020-10-29 03:35:31,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:31,851 INFO L93 Difference]: Finished difference Result 268 states and 292 transitions. [2020-10-29 03:35:31,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:35:31,851 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 127 [2020-10-29 03:35:31,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:31,853 INFO L225 Difference]: With dead ends: 268 [2020-10-29 03:35:31,853 INFO L226 Difference]: Without dead ends: 157 [2020-10-29 03:35:31,854 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 03:35:31,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-29 03:35:31,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 149. [2020-10-29 03:35:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-29 03:35:31,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 158 transitions. [2020-10-29 03:35:31,874 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 158 transitions. Word has length 127 [2020-10-29 03:35:31,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:31,874 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 158 transitions. [2020-10-29 03:35:31,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:35:31,874 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 158 transitions. [2020-10-29 03:35:31,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-29 03:35:31,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:31,884 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1] [2020-10-29 03:35:31,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:35:31,884 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:31,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2134848702, now seen corresponding path program 7 times [2020-10-29 03:35:31,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:31,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204136809] [2020-10-29 03:35:31,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:31,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:31,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:31,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:32,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:32,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:32,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:36,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:36,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 03:35:36,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:36,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 03:35:36,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:36,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:36,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:35:36,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 03:35:36,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:35:36,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:37,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:37,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:37,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:37,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:37,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:37,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:37,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:37,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:37,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:37,086 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-29 03:35:37,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204136809] [2020-10-29 03:35:37,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:37,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:35:37,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677503733] [2020-10-29 03:35:37,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:35:37,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:37,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:35:37,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:35:37,093 INFO L87 Difference]: Start difference. First operand 149 states and 158 transitions. Second operand 11 states. [2020-10-29 03:35:37,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:37,555 INFO L93 Difference]: Finished difference Result 298 states and 322 transitions. [2020-10-29 03:35:37,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:35:37,556 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-10-29 03:35:37,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:37,557 INFO L225 Difference]: With dead ends: 298 [2020-10-29 03:35:37,557 INFO L226 Difference]: Without dead ends: 173 [2020-10-29 03:35:37,559 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 03:35:37,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-29 03:35:37,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 165. [2020-10-29 03:35:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-29 03:35:37,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 174 transitions. [2020-10-29 03:35:37,575 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 174 transitions. Word has length 143 [2020-10-29 03:35:37,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:37,576 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 174 transitions. [2020-10-29 03:35:37,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:35:37,576 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 174 transitions. [2020-10-29 03:35:37,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 03:35:37,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:37,578 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1] [2020-10-29 03:35:37,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:35:37,579 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:37,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:37,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1038076754, now seen corresponding path program 8 times [2020-10-29 03:35:37,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:37,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901271144] [2020-10-29 03:35:37,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:37,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:37,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:37,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:37,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:37,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:37,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:42,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:42,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 03:35:42,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-29 03:35:42,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:42,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:35:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:35:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:35:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:42,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:42,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:42,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:42,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:42,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:42,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:42,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:42,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:42,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:42,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:42,807 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2020-10-29 03:35:42,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901271144] [2020-10-29 03:35:42,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:42,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:35:42,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052204342] [2020-10-29 03:35:42,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:35:42,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:42,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:35:42,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:35:42,815 INFO L87 Difference]: Start difference. First operand 165 states and 174 transitions. Second operand 12 states. [2020-10-29 03:35:43,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:43,306 INFO L93 Difference]: Finished difference Result 328 states and 352 transitions. [2020-10-29 03:35:43,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:35:43,307 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 159 [2020-10-29 03:35:43,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:43,309 INFO L225 Difference]: With dead ends: 328 [2020-10-29 03:35:43,309 INFO L226 Difference]: Without dead ends: 189 [2020-10-29 03:35:43,310 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 03:35:43,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-29 03:35:43,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 181. [2020-10-29 03:35:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-29 03:35:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 190 transitions. [2020-10-29 03:35:43,320 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 190 transitions. Word has length 159 [2020-10-29 03:35:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:43,321 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 190 transitions. [2020-10-29 03:35:43,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:35:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 190 transitions. [2020-10-29 03:35:43,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-29 03:35:43,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:43,323 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1] [2020-10-29 03:35:43,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:35:43,323 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:43,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:43,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1630672030, now seen corresponding path program 9 times [2020-10-29 03:35:43,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:43,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48695906] [2020-10-29 03:35:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:43,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:43,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:43,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:43,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:43,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:44,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:48,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:48,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-29 03:35:48,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:48,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-29 03:35:48,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:48,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:35:48,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 03:35:48,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:35:48,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:48,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:48,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:48,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:48,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:48,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:48,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:48,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:48,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:48,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:48,604 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2020-10-29 03:35:48,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48695906] [2020-10-29 03:35:48,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:48,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:35:48,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613389878] [2020-10-29 03:35:48,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:35:48,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:48,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:35:48,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:35:48,606 INFO L87 Difference]: Start difference. First operand 181 states and 190 transitions. Second operand 13 states. [2020-10-29 03:35:49,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:49,251 INFO L93 Difference]: Finished difference Result 358 states and 382 transitions. [2020-10-29 03:35:49,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:35:49,252 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 175 [2020-10-29 03:35:49,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:49,254 INFO L225 Difference]: With dead ends: 358 [2020-10-29 03:35:49,254 INFO L226 Difference]: Without dead ends: 205 [2020-10-29 03:35:49,256 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 03:35:49,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-29 03:35:49,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 197. [2020-10-29 03:35:49,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-29 03:35:49,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 206 transitions. [2020-10-29 03:35:49,264 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 206 transitions. Word has length 175 [2020-10-29 03:35:49,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:49,264 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 206 transitions. [2020-10-29 03:35:49,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:35:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 206 transitions. [2020-10-29 03:35:49,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-29 03:35:49,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:49,267 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1] [2020-10-29 03:35:49,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:35:49,267 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:49,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:49,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1240781966, now seen corresponding path program 10 times [2020-10-29 03:35:49,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:49,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136191856] [2020-10-29 03:35:49,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:49,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:49,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:49,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:49,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:49,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:49,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:54,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:54,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 03:35:54,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:35:54,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 03:35:54,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:54,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:35:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-29 03:35:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:35:54,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:54,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:35:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:54,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:54,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:35:54,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:35:54,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:35:54,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:35:54,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:35:54,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:35:54,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:35:54,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:35:54,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:35:54,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:35:54,553 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2020-10-29 03:35:54,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136191856] [2020-10-29 03:35:54,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:35:54,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:35:54,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647202234] [2020-10-29 03:35:54,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:35:54,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:35:54,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:35:54,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:35:54,556 INFO L87 Difference]: Start difference. First operand 197 states and 206 transitions. Second operand 14 states. [2020-10-29 03:35:55,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:35:55,135 INFO L93 Difference]: Finished difference Result 388 states and 412 transitions. [2020-10-29 03:35:55,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:35:55,136 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 191 [2020-10-29 03:35:55,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:35:55,139 INFO L225 Difference]: With dead ends: 388 [2020-10-29 03:35:55,139 INFO L226 Difference]: Without dead ends: 221 [2020-10-29 03:35:55,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:35:55,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-29 03:35:55,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 213. [2020-10-29 03:35:55,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-29 03:35:55,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 222 transitions. [2020-10-29 03:35:55,149 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 222 transitions. Word has length 191 [2020-10-29 03:35:55,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:35:55,150 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 222 transitions. [2020-10-29 03:35:55,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:35:55,150 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 222 transitions. [2020-10-29 03:35:55,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-29 03:35:55,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:35:55,153 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 1, 1, 1, 1] [2020-10-29 03:35:55,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:35:55,153 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:35:55,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:35:55,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1843950718, now seen corresponding path program 11 times [2020-10-29 03:35:55,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:35:55,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992687794] [2020-10-29 03:35:55,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:35:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:35:55,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:55,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:55,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:55,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:55,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:35:57,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:00,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:00,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-29 03:36:00,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:00,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-29 03:36:00,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:00,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:36:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 03:36:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:36:00,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:00,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:00,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:00,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:00,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:00,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:00,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:00,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:00,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:00,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:00,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:00,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:00,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2020-10-29 03:36:00,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992687794] [2020-10-29 03:36:00,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:00,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:36:00,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803110876] [2020-10-29 03:36:00,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:36:00,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:00,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:36:00,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:36:00,462 INFO L87 Difference]: Start difference. First operand 213 states and 222 transitions. Second operand 15 states. [2020-10-29 03:36:01,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:01,102 INFO L93 Difference]: Finished difference Result 418 states and 442 transitions. [2020-10-29 03:36:01,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:36:01,102 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 207 [2020-10-29 03:36:01,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:01,106 INFO L225 Difference]: With dead ends: 418 [2020-10-29 03:36:01,106 INFO L226 Difference]: Without dead ends: 237 [2020-10-29 03:36:01,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:36:01,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-29 03:36:01,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 229. [2020-10-29 03:36:01,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-29 03:36:01,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 238 transitions. [2020-10-29 03:36:01,118 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 238 transitions. Word has length 207 [2020-10-29 03:36:01,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:01,118 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 238 transitions. [2020-10-29 03:36:01,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:36:01,119 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 238 transitions. [2020-10-29 03:36:01,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-29 03:36:01,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:01,122 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 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, 1, 1, 1, 1] [2020-10-29 03:36:01,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:36:01,122 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:01,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:01,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1030949778, now seen corresponding path program 12 times [2020-10-29 03:36:01,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:01,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182424869] [2020-10-29 03:36:01,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:01,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:01,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:01,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:01,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:04,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:06,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:06,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-29 03:36:06,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:06,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-29 03:36:06,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:06,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:06,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:36:06,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-29 03:36:06,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:36:06,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:06,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:06,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:06,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:06,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:06,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:06,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:36:06,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:06,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:06,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:06,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:06,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:06,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:06,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2020-10-29 03:36:06,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182424869] [2020-10-29 03:36:06,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:06,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:36:06,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125307144] [2020-10-29 03:36:06,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:36:06,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:06,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:36:06,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:36:06,464 INFO L87 Difference]: Start difference. First operand 229 states and 238 transitions. Second operand 16 states. [2020-10-29 03:36:07,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:07,175 INFO L93 Difference]: Finished difference Result 448 states and 472 transitions. [2020-10-29 03:36:07,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:36:07,176 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 223 [2020-10-29 03:36:07,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:07,179 INFO L225 Difference]: With dead ends: 448 [2020-10-29 03:36:07,179 INFO L226 Difference]: Without dead ends: 253 [2020-10-29 03:36:07,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:36:07,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-29 03:36:07,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 245. [2020-10-29 03:36:07,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-29 03:36:07,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 254 transitions. [2020-10-29 03:36:07,195 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 254 transitions. Word has length 223 [2020-10-29 03:36:07,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:07,197 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 254 transitions. [2020-10-29 03:36:07,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:36:07,197 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 254 transitions. [2020-10-29 03:36:07,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-29 03:36:07,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:07,201 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 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, 1, 1, 1, 1] [2020-10-29 03:36:07,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:36:07,201 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:07,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:07,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1096963166, now seen corresponding path program 13 times [2020-10-29 03:36:07,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:07,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419395737] [2020-10-29 03:36:07,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:07,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:07,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:07,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:07,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:07,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:12,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:12,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-29 03:36:12,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:12,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5339 [2020-10-29 03:36:12,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:12,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:12,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:36:12,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 03:36:12,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:36:12,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:12,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:12,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:12,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:12,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:12,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:12,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:36:12,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:12,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:12,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:12,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:12,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:12,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:12,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1183 trivial. 0 not checked. [2020-10-29 03:36:12,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419395737] [2020-10-29 03:36:12,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:12,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:36:12,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831934518] [2020-10-29 03:36:12,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:36:12,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:12,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:36:12,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:36:12,823 INFO L87 Difference]: Start difference. First operand 245 states and 254 transitions. Second operand 17 states. [2020-10-29 03:36:13,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:13,622 INFO L93 Difference]: Finished difference Result 478 states and 502 transitions. [2020-10-29 03:36:13,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:36:13,622 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 239 [2020-10-29 03:36:13,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:13,625 INFO L225 Difference]: With dead ends: 478 [2020-10-29 03:36:13,625 INFO L226 Difference]: Without dead ends: 269 [2020-10-29 03:36:13,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:36:13,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-29 03:36:13,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 261. [2020-10-29 03:36:13,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-29 03:36:13,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 270 transitions. [2020-10-29 03:36:13,637 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 270 transitions. Word has length 239 [2020-10-29 03:36:13,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:13,637 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 270 transitions. [2020-10-29 03:36:13,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:36:13,638 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 270 transitions. [2020-10-29 03:36:13,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-29 03:36:13,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:13,639 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 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, 1, 1, 1, 1] [2020-10-29 03:36:13,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:36:13,640 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:13,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:13,640 INFO L82 PathProgramCache]: Analyzing trace with hash -404188082, now seen corresponding path program 14 times [2020-10-29 03:36:13,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:13,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764561955] [2020-10-29 03:36:13,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:13,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:13,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:13,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:13,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:13,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:13,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:18,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:18,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-29 03:36:18,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:18,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5278 [2020-10-29 03:36:18,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:18,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:18,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:36:18,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 03:36:18,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:36:18,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:19,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:19,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:19,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:19,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:19,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:19,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:19,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:19,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:19,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:19,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:19,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:19,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1372 trivial. 0 not checked. [2020-10-29 03:36:19,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764561955] [2020-10-29 03:36:19,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:19,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:36:19,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36579113] [2020-10-29 03:36:19,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:36:19,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:19,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:36:19,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:36:19,269 INFO L87 Difference]: Start difference. First operand 261 states and 270 transitions. Second operand 18 states. [2020-10-29 03:36:20,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:20,085 INFO L93 Difference]: Finished difference Result 508 states and 532 transitions. [2020-10-29 03:36:20,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:36:20,086 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 255 [2020-10-29 03:36:20,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:20,088 INFO L225 Difference]: With dead ends: 508 [2020-10-29 03:36:20,088 INFO L226 Difference]: Without dead ends: 285 [2020-10-29 03:36:20,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:36:20,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-29 03:36:20,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 277. [2020-10-29 03:36:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-29 03:36:20,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 286 transitions. [2020-10-29 03:36:20,102 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 286 transitions. Word has length 255 [2020-10-29 03:36:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:20,102 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 286 transitions. [2020-10-29 03:36:20,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:36:20,102 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 286 transitions. [2020-10-29 03:36:20,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-29 03:36:20,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:20,104 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 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, 1, 1, 1, 1] [2020-10-29 03:36:20,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:36:20,104 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:20,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:20,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1214270402, now seen corresponding path program 15 times [2020-10-29 03:36:20,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:20,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207842564] [2020-10-29 03:36:20,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:20,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:20,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:20,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:20,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:20,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:24,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:25,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:25,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-29 03:36:25,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:25,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5207 [2020-10-29 03:36:25,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:25,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:25,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:36:25,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 03:36:25,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:36:25,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:25,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:25,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:25,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:25,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:25,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:25,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:36:25,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:25,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:25,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 1575 trivial. 0 not checked. [2020-10-29 03:36:25,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207842564] [2020-10-29 03:36:25,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:25,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:36:25,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155150597] [2020-10-29 03:36:25,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:36:25,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:25,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:36:25,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:36:25,645 INFO L87 Difference]: Start difference. First operand 277 states and 286 transitions. Second operand 19 states. [2020-10-29 03:36:26,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:26,442 INFO L93 Difference]: Finished difference Result 538 states and 562 transitions. [2020-10-29 03:36:26,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:36:26,442 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 271 [2020-10-29 03:36:26,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:26,445 INFO L225 Difference]: With dead ends: 538 [2020-10-29 03:36:26,445 INFO L226 Difference]: Without dead ends: 301 [2020-10-29 03:36:26,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:36:26,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-29 03:36:26,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 293. [2020-10-29 03:36:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-29 03:36:26,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 302 transitions. [2020-10-29 03:36:26,457 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 302 transitions. Word has length 271 [2020-10-29 03:36:26,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:26,458 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 302 transitions. [2020-10-29 03:36:26,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:36:26,458 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 302 transitions. [2020-10-29 03:36:26,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-29 03:36:26,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:26,460 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 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, 1, 1, 1, 1] [2020-10-29 03:36:26,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:36:26,460 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:26,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:26,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1241009106, now seen corresponding path program 16 times [2020-10-29 03:36:26,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:26,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783724318] [2020-10-29 03:36:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:26,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:26,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:26,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:26,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:26,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:30,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:31,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:31,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-29 03:36:31,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:36:31,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 03:36:31,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:31,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:31,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:36:31,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 03:36:31,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:36:31,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:31,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:31,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:31,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:31,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:31,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:31,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:36:31,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:31,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:31,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:31,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:31,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:31,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:31,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 1792 trivial. 0 not checked. [2020-10-29 03:36:31,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783724318] [2020-10-29 03:36:31,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:31,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:36:31,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046179060] [2020-10-29 03:36:31,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:36:31,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:31,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:36:31,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:36:31,862 INFO L87 Difference]: Start difference. First operand 293 states and 302 transitions. Second operand 20 states. [2020-10-29 03:36:32,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:32,805 INFO L93 Difference]: Finished difference Result 568 states and 592 transitions. [2020-10-29 03:36:32,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:36:32,806 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 287 [2020-10-29 03:36:32,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:32,809 INFO L225 Difference]: With dead ends: 568 [2020-10-29 03:36:32,809 INFO L226 Difference]: Without dead ends: 317 [2020-10-29 03:36:32,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:36:32,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-29 03:36:32,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 309. [2020-10-29 03:36:32,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-10-29 03:36:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 318 transitions. [2020-10-29 03:36:32,822 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 318 transitions. Word has length 287 [2020-10-29 03:36:32,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:32,822 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 318 transitions. [2020-10-29 03:36:32,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:36:32,823 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 318 transitions. [2020-10-29 03:36:32,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-29 03:36:32,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:32,825 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 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, 1, 1, 1, 1] [2020-10-29 03:36:32,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:36:32,825 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:32,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:32,826 INFO L82 PathProgramCache]: Analyzing trace with hash -325020642, now seen corresponding path program 17 times [2020-10-29 03:36:32,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:32,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503301747] [2020-10-29 03:36:32,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:32,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:32,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:32,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:32,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:33,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:37,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:37,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-29 03:36:37,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:37,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:36:37,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:37,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:36:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-29 03:36:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:36:37,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:38,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:38,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:38,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:38,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:38,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:38,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:36:38,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:38,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:38,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:38,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:38,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:38,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:38,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 2023 trivial. 0 not checked. [2020-10-29 03:36:38,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503301747] [2020-10-29 03:36:38,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:38,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:36:38,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592876614] [2020-10-29 03:36:38,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:36:38,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:38,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:36:38,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:36:38,225 INFO L87 Difference]: Start difference. First operand 309 states and 318 transitions. Second operand 21 states. [2020-10-29 03:36:39,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:39,116 INFO L93 Difference]: Finished difference Result 598 states and 622 transitions. [2020-10-29 03:36:39,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:36:39,116 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 303 [2020-10-29 03:36:39,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:39,119 INFO L225 Difference]: With dead ends: 598 [2020-10-29 03:36:39,119 INFO L226 Difference]: Without dead ends: 333 [2020-10-29 03:36:39,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:36:39,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-29 03:36:39,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 325. [2020-10-29 03:36:39,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-10-29 03:36:39,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 334 transitions. [2020-10-29 03:36:39,132 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 334 transitions. Word has length 303 [2020-10-29 03:36:39,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:39,133 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 334 transitions. [2020-10-29 03:36:39,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:36:39,133 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 334 transitions. [2020-10-29 03:36:39,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-29 03:36:39,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:39,135 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 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, 1, 1, 1, 1] [2020-10-29 03:36:39,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:36:39,136 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:39,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:39,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1760187406, now seen corresponding path program 18 times [2020-10-29 03:36:39,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:39,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662394991] [2020-10-29 03:36:39,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:39,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:39,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:45,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:45,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-29 03:36:45,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:45,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5986 [2020-10-29 03:36:45,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:45,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:45,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:36:45,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-29 03:36:45,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:36:45,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:45,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:45,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:45,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:45,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:45,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:45,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:36:45,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:45,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:45,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:45,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:45,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:45,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 2268 trivial. 0 not checked. [2020-10-29 03:36:45,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662394991] [2020-10-29 03:36:45,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:45,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:36:45,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65760072] [2020-10-29 03:36:45,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:36:45,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:45,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:36:45,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:36:45,556 INFO L87 Difference]: Start difference. First operand 325 states and 334 transitions. Second operand 22 states. [2020-10-29 03:36:46,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:46,423 INFO L93 Difference]: Finished difference Result 628 states and 652 transitions. [2020-10-29 03:36:46,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:36:46,423 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 319 [2020-10-29 03:36:46,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:46,426 INFO L225 Difference]: With dead ends: 628 [2020-10-29 03:36:46,426 INFO L226 Difference]: Without dead ends: 349 [2020-10-29 03:36:46,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:36:46,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-29 03:36:46,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 341. [2020-10-29 03:36:46,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-10-29 03:36:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 350 transitions. [2020-10-29 03:36:46,440 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 350 transitions. Word has length 319 [2020-10-29 03:36:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:46,441 INFO L481 AbstractCegarLoop]: Abstraction has 341 states and 350 transitions. [2020-10-29 03:36:46,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:36:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 350 transitions. [2020-10-29 03:36:46,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-29 03:36:46,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:46,443 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 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, 1, 1, 1, 1] [2020-10-29 03:36:46,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:36:46,443 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:46,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:46,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1013249022, now seen corresponding path program 19 times [2020-10-29 03:36:46,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:46,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959103848] [2020-10-29 03:36:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:46,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:46,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:46,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:46,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:46,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:52,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:52,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-29 03:36:52,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:52,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5639 [2020-10-29 03:36:52,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:52,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:52,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:36:52,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-29 03:36:52,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:36:52,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:36:52,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:36:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:52,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:52,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:52,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:36:52,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:36:52,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:36:52,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:52,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:36:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:36:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:36:52,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:36:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 2527 trivial. 0 not checked. [2020-10-29 03:36:52,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959103848] [2020-10-29 03:36:52,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:36:52,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:36:52,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770464411] [2020-10-29 03:36:52,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:36:52,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:36:52,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:36:52,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:36:52,738 INFO L87 Difference]: Start difference. First operand 341 states and 350 transitions. Second operand 23 states. [2020-10-29 03:36:53,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:36:53,655 INFO L93 Difference]: Finished difference Result 658 states and 682 transitions. [2020-10-29 03:36:53,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:36:53,656 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 335 [2020-10-29 03:36:53,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:36:53,659 INFO L225 Difference]: With dead ends: 658 [2020-10-29 03:36:53,659 INFO L226 Difference]: Without dead ends: 365 [2020-10-29 03:36:53,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:36:53,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-29 03:36:53,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 357. [2020-10-29 03:36:53,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-29 03:36:53,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 366 transitions. [2020-10-29 03:36:53,673 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 366 transitions. Word has length 335 [2020-10-29 03:36:53,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:36:53,674 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 366 transitions. [2020-10-29 03:36:53,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:36:53,674 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 366 transitions. [2020-10-29 03:36:53,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-29 03:36:53,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:36:53,676 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 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, 1, 1, 1, 1] [2020-10-29 03:36:53,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:36:53,677 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:36:53,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:36:53,677 INFO L82 PathProgramCache]: Analyzing trace with hash 2089841646, now seen corresponding path program 20 times [2020-10-29 03:36:53,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:36:53,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112852618] [2020-10-29 03:36:53,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:36:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:36:53,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:53,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:53,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:53,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:53,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:36:59,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:36:59,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-29 03:36:59,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:36:59,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6093 [2020-10-29 03:36:59,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:36:59,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:36:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:36:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-29 03:36:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:36:59,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:00,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:00,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:00,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:00,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:00,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:00,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:37:00,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:00,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:00,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:37:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3200 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 2800 trivial. 0 not checked. [2020-10-29 03:37:00,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112852618] [2020-10-29 03:37:00,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:00,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:37:00,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037608519] [2020-10-29 03:37:00,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:37:00,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:00,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:37:00,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:37:00,444 INFO L87 Difference]: Start difference. First operand 357 states and 366 transitions. Second operand 24 states. [2020-10-29 03:37:01,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:01,461 INFO L93 Difference]: Finished difference Result 688 states and 712 transitions. [2020-10-29 03:37:01,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:37:01,462 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 351 [2020-10-29 03:37:01,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:01,464 INFO L225 Difference]: With dead ends: 688 [2020-10-29 03:37:01,464 INFO L226 Difference]: Without dead ends: 381 [2020-10-29 03:37:01,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:37:01,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-29 03:37:01,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 373. [2020-10-29 03:37:01,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-10-29 03:37:01,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 382 transitions. [2020-10-29 03:37:01,479 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 382 transitions. Word has length 351 [2020-10-29 03:37:01,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:01,479 INFO L481 AbstractCegarLoop]: Abstraction has 373 states and 382 transitions. [2020-10-29 03:37:01,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:37:01,479 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 382 transitions. [2020-10-29 03:37:01,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-29 03:37:01,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:01,482 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 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, 1, 1, 1, 1] [2020-10-29 03:37:01,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:37:01,483 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:01,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:01,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1122816990, now seen corresponding path program 21 times [2020-10-29 03:37:01,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:01,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382620733] [2020-10-29 03:37:01,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:01,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:01,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:01,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:01,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:01,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:06,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:06,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-29 03:37:06,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:37:06,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5198 [2020-10-29 03:37:06,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:06,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:06,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:37:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:37:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:37:06,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:07,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:07,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:07,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:07,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:07,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:07,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:07,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:07,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:07,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:07,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:07,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 3087 trivial. 0 not checked. [2020-10-29 03:37:07,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382620733] [2020-10-29 03:37:07,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:07,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:37:07,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389380854] [2020-10-29 03:37:07,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:37:07,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:07,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:37:07,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:37:07,279 INFO L87 Difference]: Start difference. First operand 373 states and 382 transitions. Second operand 25 states. [2020-10-29 03:37:08,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:08,392 INFO L93 Difference]: Finished difference Result 718 states and 742 transitions. [2020-10-29 03:37:08,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:37:08,395 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 367 [2020-10-29 03:37:08,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:08,397 INFO L225 Difference]: With dead ends: 718 [2020-10-29 03:37:08,397 INFO L226 Difference]: Without dead ends: 397 [2020-10-29 03:37:08,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:37:08,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-29 03:37:08,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 389. [2020-10-29 03:37:08,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-29 03:37:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 398 transitions. [2020-10-29 03:37:08,412 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 398 transitions. Word has length 367 [2020-10-29 03:37:08,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:08,412 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 398 transitions. [2020-10-29 03:37:08,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:37:08,412 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 398 transitions. [2020-10-29 03:37:08,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-29 03:37:08,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:08,415 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 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, 1, 1, 1, 1] [2020-10-29 03:37:08,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:37:08,415 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:08,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:08,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1392897074, now seen corresponding path program 22 times [2020-10-29 03:37:08,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:08,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296975400] [2020-10-29 03:37:08,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:08,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:08,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:08,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:08,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:08,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:14,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:14,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-29 03:37:14,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:37:14,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5923 [2020-10-29 03:37:14,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:14,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:37:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 03:37:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:37:14,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:14,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:14,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:14,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:14,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:14,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:14,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:14,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:14,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:14,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3872 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3388 trivial. 0 not checked. [2020-10-29 03:37:14,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296975400] [2020-10-29 03:37:14,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:14,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:37:14,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180229255] [2020-10-29 03:37:14,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:37:14,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:14,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:37:14,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:37:14,918 INFO L87 Difference]: Start difference. First operand 389 states and 398 transitions. Second operand 26 states. [2020-10-29 03:37:16,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:16,014 INFO L93 Difference]: Finished difference Result 748 states and 772 transitions. [2020-10-29 03:37:16,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:37:16,015 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 383 [2020-10-29 03:37:16,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:16,017 INFO L225 Difference]: With dead ends: 748 [2020-10-29 03:37:16,017 INFO L226 Difference]: Without dead ends: 413 [2020-10-29 03:37:16,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:37:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-10-29 03:37:16,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 405. [2020-10-29 03:37:16,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-10-29 03:37:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 414 transitions. [2020-10-29 03:37:16,034 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 414 transitions. Word has length 383 [2020-10-29 03:37:16,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:16,034 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 414 transitions. [2020-10-29 03:37:16,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:37:16,035 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 414 transitions. [2020-10-29 03:37:16,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-29 03:37:16,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:16,038 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 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, 1, 1, 1, 1] [2020-10-29 03:37:16,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:37:16,038 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:16,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:16,038 INFO L82 PathProgramCache]: Analyzing trace with hash -600296514, now seen corresponding path program 23 times [2020-10-29 03:37:16,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:16,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520864544] [2020-10-29 03:37:16,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:16,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:16,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:16,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:16,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:21,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:21,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-29 03:37:21,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:37:21,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5709 [2020-10-29 03:37:21,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:21,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:37:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-29 03:37:21,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:37:21,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:22,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:22,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:22,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:22,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:22,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:22,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:22,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:22,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:22,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:22,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:22,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:22,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 3703 trivial. 0 not checked. [2020-10-29 03:37:22,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520864544] [2020-10-29 03:37:22,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:22,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:37:22,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871175661] [2020-10-29 03:37:22,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:37:22,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:22,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:37:22,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:37:22,403 INFO L87 Difference]: Start difference. First operand 405 states and 414 transitions. Second operand 27 states. [2020-10-29 03:37:23,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:23,639 INFO L93 Difference]: Finished difference Result 778 states and 802 transitions. [2020-10-29 03:37:23,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:37:23,640 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 399 [2020-10-29 03:37:23,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:23,643 INFO L225 Difference]: With dead ends: 778 [2020-10-29 03:37:23,643 INFO L226 Difference]: Without dead ends: 429 [2020-10-29 03:37:23,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:37:23,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-10-29 03:37:23,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 421. [2020-10-29 03:37:23,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-10-29 03:37:23,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 430 transitions. [2020-10-29 03:37:23,656 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 430 transitions. Word has length 399 [2020-10-29 03:37:23,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:23,657 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 430 transitions. [2020-10-29 03:37:23,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:37:23,657 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 430 transitions. [2020-10-29 03:37:23,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-10-29 03:37:23,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:23,660 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 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, 1, 1, 1, 1] [2020-10-29 03:37:23,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:37:23,660 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:23,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:23,661 INFO L82 PathProgramCache]: Analyzing trace with hash -165203026, now seen corresponding path program 24 times [2020-10-29 03:37:23,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:23,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279504418] [2020-10-29 03:37:23,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:23,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:23,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:23,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:24,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:24,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:29,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:29,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-29 03:37:29,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:29,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5342 [2020-10-29 03:37:29,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:29,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:29,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:37:29,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-29 03:37:29,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:37:29,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:29,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:29,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:29,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:29,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:29,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:29,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:29,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:29,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:29,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4608 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2020-10-29 03:37:29,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279504418] [2020-10-29 03:37:29,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:29,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:37:29,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068142942] [2020-10-29 03:37:29,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:37:29,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:29,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:37:29,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:37:29,762 INFO L87 Difference]: Start difference. First operand 421 states and 430 transitions. Second operand 28 states. [2020-10-29 03:37:30,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:30,909 INFO L93 Difference]: Finished difference Result 808 states and 832 transitions. [2020-10-29 03:37:30,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:37:30,910 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 415 [2020-10-29 03:37:30,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:30,913 INFO L225 Difference]: With dead ends: 808 [2020-10-29 03:37:30,913 INFO L226 Difference]: Without dead ends: 445 [2020-10-29 03:37:30,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:37:30,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-10-29 03:37:30,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 437. [2020-10-29 03:37:30,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-29 03:37:30,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 446 transitions. [2020-10-29 03:37:30,929 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 446 transitions. Word has length 415 [2020-10-29 03:37:30,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:30,929 INFO L481 AbstractCegarLoop]: Abstraction has 437 states and 446 transitions. [2020-10-29 03:37:30,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:37:30,929 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 446 transitions. [2020-10-29 03:37:30,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-29 03:37:30,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:30,933 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 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, 1, 1, 1, 1] [2020-10-29 03:37:30,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:37:30,933 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:30,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:30,934 INFO L82 PathProgramCache]: Analyzing trace with hash 608637854, now seen corresponding path program 25 times [2020-10-29 03:37:30,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:30,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054956607] [2020-10-29 03:37:30,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:30,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:31,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:31,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:31,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:31,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:37,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:37,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 441 [2020-10-29 03:37:37,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:37:37,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6053 [2020-10-29 03:37:37,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:37,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:37,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:37:37,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 03:37:37,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:37:37,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:37,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:37,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:37,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:37,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:37,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:37:37,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:37,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:37,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:37,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:37,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:37:37,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5000 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 4375 trivial. 0 not checked. [2020-10-29 03:37:37,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054956607] [2020-10-29 03:37:37,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:37,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:37:37,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062889523] [2020-10-29 03:37:37,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:37:37,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:37,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:37:37,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:37:37,772 INFO L87 Difference]: Start difference. First operand 437 states and 446 transitions. Second operand 29 states. [2020-10-29 03:37:39,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:39,159 INFO L93 Difference]: Finished difference Result 838 states and 862 transitions. [2020-10-29 03:37:39,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:37:39,160 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 431 [2020-10-29 03:37:39,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:39,163 INFO L225 Difference]: With dead ends: 838 [2020-10-29 03:37:39,163 INFO L226 Difference]: Without dead ends: 461 [2020-10-29 03:37:39,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:37:39,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-10-29 03:37:39,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 453. [2020-10-29 03:37:39,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-10-29 03:37:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 462 transitions. [2020-10-29 03:37:39,178 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 462 transitions. Word has length 431 [2020-10-29 03:37:39,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:39,178 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 462 transitions. [2020-10-29 03:37:39,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:37:39,179 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 462 transitions. [2020-10-29 03:37:39,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-29 03:37:39,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:39,182 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 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, 1, 1, 1, 1] [2020-10-29 03:37:39,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:37:39,183 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:39,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:39,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1810377842, now seen corresponding path program 26 times [2020-10-29 03:37:39,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:39,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111449436] [2020-10-29 03:37:39,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:39,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:39,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:39,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:39,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:39,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:44,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:44,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-10-29 03:37:44,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:44,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5606 [2020-10-29 03:37:44,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:44,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:44,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:37:44,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-29 03:37:44,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:37:44,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:45,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:45,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:45,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:45,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:45,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:45,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:45,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:45,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:45,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:45,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:45,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:45,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 4732 trivial. 0 not checked. [2020-10-29 03:37:45,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111449436] [2020-10-29 03:37:45,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:45,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:37:45,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539069522] [2020-10-29 03:37:45,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:37:45,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:45,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:37:45,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:37:45,626 INFO L87 Difference]: Start difference. First operand 453 states and 462 transitions. Second operand 30 states. [2020-10-29 03:37:46,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:47,000 INFO L93 Difference]: Finished difference Result 868 states and 892 transitions. [2020-10-29 03:37:47,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:37:47,000 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 447 [2020-10-29 03:37:47,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:47,003 INFO L225 Difference]: With dead ends: 868 [2020-10-29 03:37:47,003 INFO L226 Difference]: Without dead ends: 477 [2020-10-29 03:37:47,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:37:47,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-10-29 03:37:47,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 469. [2020-10-29 03:37:47,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-10-29 03:37:47,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 478 transitions. [2020-10-29 03:37:47,017 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 478 transitions. Word has length 447 [2020-10-29 03:37:47,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:47,017 INFO L481 AbstractCegarLoop]: Abstraction has 469 states and 478 transitions. [2020-10-29 03:37:47,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:37:47,017 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 478 transitions. [2020-10-29 03:37:47,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-10-29 03:37:47,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:47,021 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 27, 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, 1, 1, 1, 1] [2020-10-29 03:37:47,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:37:47,021 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:47,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:47,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1998156670, now seen corresponding path program 27 times [2020-10-29 03:37:47,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:47,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013116411] [2020-10-29 03:37:47,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:47,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:47,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:52,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:52,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-10-29 03:37:52,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:37:52,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5507 [2020-10-29 03:37:52,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:52,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:52,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:37:52,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:37:52,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:37:52,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:53,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:37:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:53,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:53,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:37:53,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:37:53,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:37:53,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:37:53,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:37:53,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:37:53,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:37:53,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:37:53,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:37:53,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:37:53,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 5103 trivial. 0 not checked. [2020-10-29 03:37:53,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013116411] [2020-10-29 03:37:53,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:37:53,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:37:53,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098986945] [2020-10-29 03:37:53,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:37:53,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:37:53,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:37:53,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:37:53,317 INFO L87 Difference]: Start difference. First operand 469 states and 478 transitions. Second operand 31 states. [2020-10-29 03:37:54,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:37:54,637 INFO L93 Difference]: Finished difference Result 898 states and 922 transitions. [2020-10-29 03:37:54,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:37:54,638 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 463 [2020-10-29 03:37:54,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:37:54,641 INFO L225 Difference]: With dead ends: 898 [2020-10-29 03:37:54,641 INFO L226 Difference]: Without dead ends: 493 [2020-10-29 03:37:54,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:37:54,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-10-29 03:37:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 485. [2020-10-29 03:37:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-10-29 03:37:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 494 transitions. [2020-10-29 03:37:54,654 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 494 transitions. Word has length 463 [2020-10-29 03:37:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:37:54,654 INFO L481 AbstractCegarLoop]: Abstraction has 485 states and 494 transitions. [2020-10-29 03:37:54,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:37:54,654 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 494 transitions. [2020-10-29 03:37:54,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-10-29 03:37:54,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:37:54,658 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 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, 1, 1, 1, 1] [2020-10-29 03:37:54,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:37:54,658 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:37:54,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:37:54,659 INFO L82 PathProgramCache]: Analyzing trace with hash 46920558, now seen corresponding path program 28 times [2020-10-29 03:37:54,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:37:54,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886941283] [2020-10-29 03:37:54,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:37:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:37:54,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:54,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:54,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:54,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:37:55,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:00,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:00,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 489 [2020-10-29 03:38:00,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:38:00,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6294 [2020-10-29 03:38:00,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:00,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:38:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:38:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:38:00,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:01,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:01,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:01,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:01,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:01,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:01,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:01,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:01,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:01,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:01,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:01,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6272 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 5488 trivial. 0 not checked. [2020-10-29 03:38:01,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886941283] [2020-10-29 03:38:01,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:01,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:38:01,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018126954] [2020-10-29 03:38:01,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:38:01,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:01,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:38:01,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:38:01,816 INFO L87 Difference]: Start difference. First operand 485 states and 494 transitions. Second operand 32 states. [2020-10-29 03:38:03,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:03,377 INFO L93 Difference]: Finished difference Result 928 states and 952 transitions. [2020-10-29 03:38:03,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:38:03,378 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 479 [2020-10-29 03:38:03,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:03,381 INFO L225 Difference]: With dead ends: 928 [2020-10-29 03:38:03,381 INFO L226 Difference]: Without dead ends: 509 [2020-10-29 03:38:03,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:38:03,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-10-29 03:38:03,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 501. [2020-10-29 03:38:03,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-10-29 03:38:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 510 transitions. [2020-10-29 03:38:03,395 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 510 transitions. Word has length 479 [2020-10-29 03:38:03,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:03,395 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 510 transitions. [2020-10-29 03:38:03,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:38:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 510 transitions. [2020-10-29 03:38:03,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-10-29 03:38:03,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:03,399 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 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, 1, 1, 1, 1] [2020-10-29 03:38:03,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:38:03,400 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:03,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:03,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1890538334, now seen corresponding path program 29 times [2020-10-29 03:38:03,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:03,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568484761] [2020-10-29 03:38:03,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:03,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:03,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:03,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:03,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:03,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:10,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:10,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 505 [2020-10-29 03:38:10,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:38:10,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7193 [2020-10-29 03:38:10,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:10,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:38:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-29 03:38:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:38:10,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:11,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:11,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:11,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:11,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:11,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:11,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:11,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:11,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:11,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:11,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:11,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:11,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6728 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 5887 trivial. 0 not checked. [2020-10-29 03:38:11,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568484761] [2020-10-29 03:38:11,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:11,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:38:11,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196308] [2020-10-29 03:38:11,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:38:11,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:11,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:38:11,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:38:11,509 INFO L87 Difference]: Start difference. First operand 501 states and 510 transitions. Second operand 33 states. [2020-10-29 03:38:13,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:13,143 INFO L93 Difference]: Finished difference Result 958 states and 982 transitions. [2020-10-29 03:38:13,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:38:13,144 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 495 [2020-10-29 03:38:13,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:13,147 INFO L225 Difference]: With dead ends: 958 [2020-10-29 03:38:13,147 INFO L226 Difference]: Without dead ends: 525 [2020-10-29 03:38:13,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:38:13,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-10-29 03:38:13,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 517. [2020-10-29 03:38:13,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2020-10-29 03:38:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 526 transitions. [2020-10-29 03:38:13,162 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 526 transitions. Word has length 495 [2020-10-29 03:38:13,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:13,162 INFO L481 AbstractCegarLoop]: Abstraction has 517 states and 526 transitions. [2020-10-29 03:38:13,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:38:13,163 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 526 transitions. [2020-10-29 03:38:13,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2020-10-29 03:38:13,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:13,167 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 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, 1, 1, 1, 1] [2020-10-29 03:38:13,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:38:13,167 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:13,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:13,167 INFO L82 PathProgramCache]: Analyzing trace with hash -29125810, now seen corresponding path program 30 times [2020-10-29 03:38:13,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:13,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511841769] [2020-10-29 03:38:13,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:13,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:13,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:13,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:13,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:13,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:18,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:18,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 521 [2020-10-29 03:38:18,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:38:18,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5602 [2020-10-29 03:38:18,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:18,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:18,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:38:18,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 03:38:18,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:38:18,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:19,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:19,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:19,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:19,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:19,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:19,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:38:19,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:19,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:19,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:19,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:19,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:19,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 7200 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 6300 trivial. 0 not checked. [2020-10-29 03:38:19,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511841769] [2020-10-29 03:38:19,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:19,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:38:19,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492986196] [2020-10-29 03:38:19,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:38:19,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:19,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:38:19,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:38:19,745 INFO L87 Difference]: Start difference. First operand 517 states and 526 transitions. Second operand 34 states. [2020-10-29 03:38:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:21,435 INFO L93 Difference]: Finished difference Result 988 states and 1012 transitions. [2020-10-29 03:38:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:38:21,436 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 511 [2020-10-29 03:38:21,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:21,439 INFO L225 Difference]: With dead ends: 988 [2020-10-29 03:38:21,439 INFO L226 Difference]: Without dead ends: 541 [2020-10-29 03:38:21,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:38:21,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-10-29 03:38:21,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 533. [2020-10-29 03:38:21,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-10-29 03:38:21,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 542 transitions. [2020-10-29 03:38:21,454 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 542 transitions. Word has length 511 [2020-10-29 03:38:21,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:21,454 INFO L481 AbstractCegarLoop]: Abstraction has 533 states and 542 transitions. [2020-10-29 03:38:21,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:38:21,454 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 542 transitions. [2020-10-29 03:38:21,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2020-10-29 03:38:21,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:21,459 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 31, 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, 1, 1, 1, 1] [2020-10-29 03:38:21,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:38:21,459 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:21,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:21,460 INFO L82 PathProgramCache]: Analyzing trace with hash -318196930, now seen corresponding path program 31 times [2020-10-29 03:38:21,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:21,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412492478] [2020-10-29 03:38:21,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:21,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:21,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:21,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:21,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:26,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:26,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 537 [2020-10-29 03:38:26,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:38:26,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 03:38:26,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:26,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:38:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:38:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:38:26,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:27,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:27,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:27,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:27,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:27,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:27,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:27,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:27,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:27,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:27,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:27,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:27,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:27,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7688 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 6727 trivial. 0 not checked. [2020-10-29 03:38:27,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412492478] [2020-10-29 03:38:27,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:27,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:38:27,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840443447] [2020-10-29 03:38:27,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:38:27,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:27,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:38:27,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:38:27,534 INFO L87 Difference]: Start difference. First operand 533 states and 542 transitions. Second operand 35 states. [2020-10-29 03:38:29,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:29,091 INFO L93 Difference]: Finished difference Result 1018 states and 1042 transitions. [2020-10-29 03:38:29,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:38:29,092 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 527 [2020-10-29 03:38:29,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:29,096 INFO L225 Difference]: With dead ends: 1018 [2020-10-29 03:38:29,096 INFO L226 Difference]: Without dead ends: 557 [2020-10-29 03:38:29,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:38:29,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2020-10-29 03:38:29,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 549. [2020-10-29 03:38:29,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-29 03:38:29,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 558 transitions. [2020-10-29 03:38:29,111 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 558 transitions. Word has length 527 [2020-10-29 03:38:29,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:29,111 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 558 transitions. [2020-10-29 03:38:29,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:38:29,111 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 558 transitions. [2020-10-29 03:38:29,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2020-10-29 03:38:29,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:29,116 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 32, 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, 1, 1, 1, 1] [2020-10-29 03:38:29,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:38:29,116 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:29,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:29,116 INFO L82 PathProgramCache]: Analyzing trace with hash -2105625810, now seen corresponding path program 32 times [2020-10-29 03:38:29,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:29,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000674371] [2020-10-29 03:38:29,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:29,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:29,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:29,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:29,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:29,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking...