/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=SHALLOWEST --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/eca-rers2012/Problem16_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:02:32,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:02:32,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:02:32,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:02:32,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:02:32,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:02:32,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:02:32,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:02:32,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:02:32,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:02:32,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:02:32,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:02:32,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:02:32,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:02:32,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:02:32,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:02:32,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:02:32,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:02:32,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:02:32,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:02:32,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:02:32,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:02:32,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:02:32,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:02:32,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:02:32,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:02:32,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:02:32,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:02:32,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:02:32,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-27 00:02:32,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:02:32,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:02:32,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:02:32,494 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 [2020-10-27 00:02:32,521 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:02:32,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:02:32,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:02:32,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:02:32,523 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:02:32,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:02:32,524 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:02:32,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:02:32,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:02:32,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:02:32,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:02:32,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:02:32,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:02:32,525 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:02:32,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:02:32,525 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:02:32,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:02:32,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:02:32,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:02:32,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:02:32,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:02:32,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:02:32,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:02:32,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:02:32,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:02:32,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:02:32,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:02:32,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:02:32,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:02:32,528 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:02:32,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:02:32,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:02:32,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:02:32,962 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:02:32,963 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:02:32,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label51.c [2020-10-27 00:02:33,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbf543f5e/a5d825f0d8434624b6a1faad2df6cf72/FLAGf6cb29f68 [2020-10-27 00:02:33,884 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:02:33,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label51.c [2020-10-27 00:02:33,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbf543f5e/a5d825f0d8434624b6a1faad2df6cf72/FLAGf6cb29f68 [2020-10-27 00:02:34,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbf543f5e/a5d825f0d8434624b6a1faad2df6cf72 [2020-10-27 00:02:34,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:02:34,021 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:02:34,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:02:34,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:02:34,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:02:34,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:02:34" (1/1) ... [2020-10-27 00:02:34,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e5fa0a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:34, skipping insertion in model container [2020-10-27 00:02:34,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:02:34" (1/1) ... [2020-10-27 00:02:34,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:02:34,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:02:34,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:02:34,986 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:02:35,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:02:35,260 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:02:35,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:35 WrapperNode [2020-10-27 00:02:35,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:02:35,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:02:35,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:02:35,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:02:35,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:35" (1/1) ... [2020-10-27 00:02:35,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:35" (1/1) ... [2020-10-27 00:02:35,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:35" (1/1) ... [2020-10-27 00:02:35,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:35" (1/1) ... [2020-10-27 00:02:35,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:35" (1/1) ... [2020-10-27 00:02:35,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:35" (1/1) ... [2020-10-27 00:02:35,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:35" (1/1) ... [2020-10-27 00:02:35,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:02:35,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:02:35,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:02:35,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:02:35,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:35" (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 [2020-10-27 00:02:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:02:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:02:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:02:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:02:35,575 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:02:35,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:02:35,576 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:02:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:02:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:02:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:02:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:02:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:02:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:02:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:02:35,579 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:02:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:02:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:02:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:02:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:02:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:02:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:02:38,541 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:02:38,542 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:02:38,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:02:38 BoogieIcfgContainer [2020-10-27 00:02:38,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:02:38,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:02:38,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:02:38,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:02:38,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:02:34" (1/3) ... [2020-10-27 00:02:38,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8d0c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:02:38, skipping insertion in model container [2020-10-27 00:02:38,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:02:35" (2/3) ... [2020-10-27 00:02:38,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8d0c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:02:38, skipping insertion in model container [2020-10-27 00:02:38,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:02:38" (3/3) ... [2020-10-27 00:02:38,554 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label51.c [2020-10-27 00:02:38,567 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:02:38,573 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:02:38,587 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:02:38,619 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:02:38,619 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:02:38,619 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:02:38,619 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:02:38,619 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:02:38,619 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:02:38,620 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:02:38,620 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:02:38,648 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 00:02:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 00:02:38,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:38,655 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] [2020-10-27 00:02:38,655 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:38,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:38,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1813812652, now seen corresponding path program 1 times [2020-10-27 00:02:38,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:38,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875822232] [2020-10-27 00:02:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:38,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:39,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:39,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 00:02:39,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:39,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-27 00:02:39,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:02:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:02:39,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:02:39,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:02:39,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:39,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:39,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:39,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:39,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:39,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 00:02:39,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:39,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:02:39,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:02:39,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875822232] [2020-10-27 00:02:39,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:02:39,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:02:39,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264310525] [2020-10-27 00:02:39,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:02:39,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:39,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:02:39,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:02:39,675 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-27 00:02:39,879 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:02:44,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:44,012 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-27 00:02:44,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:02:44,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-27 00:02:44,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:44,044 INFO L225 Difference]: With dead ends: 1174 [2020-10-27 00:02:44,045 INFO L226 Difference]: Without dead ends: 697 [2020-10-27 00:02:44,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:02:44,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-27 00:02:44,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-27 00:02:44,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-27 00:02:44,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-27 00:02:44,175 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 21 [2020-10-27 00:02:44,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:44,176 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-27 00:02:44,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:02:44,176 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-27 00:02:44,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 00:02:44,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:44,182 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:44,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:02:44,183 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:44,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:44,183 INFO L82 PathProgramCache]: Analyzing trace with hash 2026500173, now seen corresponding path program 1 times [2020-10-27 00:02:44,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:44,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470799751] [2020-10-27 00:02:44,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:44,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:44,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:45,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:45,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 00:02:45,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:02:45,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1153 [2020-10-27 00:02:45,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:02:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:02:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:02:45,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:02:45,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:45,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:45,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:45,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:45,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:45,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:02:45,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:45,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:45,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:45,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:02:45,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:45,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:45,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:45,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:45,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:02:45,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:45,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 00:02:45,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:45,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:45,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:45,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:02:45,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:02:45,874 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:02:45,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470799751] [2020-10-27 00:02:45,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:02:45,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:02:45,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043421321] [2020-10-27 00:02:45,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:45,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:45,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:45,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:45,885 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-27 00:02:50,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:50,412 INFO L93 Difference]: Finished difference Result 2081 states and 3078 transitions. [2020-10-27 00:02:50,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:02:50,413 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-27 00:02:50,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:50,421 INFO L225 Difference]: With dead ends: 2081 [2020-10-27 00:02:50,422 INFO L226 Difference]: Without dead ends: 1394 [2020-10-27 00:02:50,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:02:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2020-10-27 00:02:50,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1386. [2020-10-27 00:02:50,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1386 states. [2020-10-27 00:02:50,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1822 transitions. [2020-10-27 00:02:50,519 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1822 transitions. Word has length 97 [2020-10-27 00:02:50,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:50,520 INFO L481 AbstractCegarLoop]: Abstraction has 1386 states and 1822 transitions. [2020-10-27 00:02:50,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:50,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1822 transitions. [2020-10-27 00:02:50,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-27 00:02:50,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:50,536 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:02:50,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:02:50,536 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:50,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:50,539 INFO L82 PathProgramCache]: Analyzing trace with hash 310425694, now seen corresponding path program 1 times [2020-10-27 00:02:50,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:50,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638966103] [2020-10-27 00:02:50,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:50,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:50,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:52,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:54,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:54,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-27 00:02:54,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 00:02:54,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3781 [2020-10-27 00:02:54,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:54,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:02:54,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:02:54,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-27 00:02:54,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:54,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:54,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:54,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:54,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:54,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:54,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:02:54,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:54,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:02:54,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:54,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:54,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:54,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:54,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:54,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:02:54,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:02:54,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-27 00:02:54,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:54,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:54,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 00:02:54,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:54,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:02:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:54,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:55,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:55,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:02:55,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:55,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 00:02:55,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 00:02:55,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 27 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 00:02:55,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638966103] [2020-10-27 00:02:55,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:55,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:55,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161082639] [2020-10-27 00:02:55,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:02:55,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:55,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:02:55,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:02:55,144 INFO L87 Difference]: Start difference. First operand 1386 states and 1822 transitions. Second operand 8 states. [2020-10-27 00:02:59,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:59,711 INFO L93 Difference]: Finished difference Result 3498 states and 4793 transitions. [2020-10-27 00:02:59,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:02:59,712 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2020-10-27 00:02:59,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:59,729 INFO L225 Difference]: With dead ends: 3498 [2020-10-27 00:02:59,729 INFO L226 Difference]: Without dead ends: 2118 [2020-10-27 00:02:59,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:02:59,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2020-10-27 00:02:59,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 2087. [2020-10-27 00:02:59,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2087 states. [2020-10-27 00:02:59,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 2696 transitions. [2020-10-27 00:02:59,817 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 2696 transitions. Word has length 184 [2020-10-27 00:02:59,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:59,818 INFO L481 AbstractCegarLoop]: Abstraction has 2087 states and 2696 transitions. [2020-10-27 00:02:59,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:02:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 2696 transitions. [2020-10-27 00:02:59,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-27 00:02:59,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:59,823 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:59,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:02:59,824 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:59,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:59,824 INFO L82 PathProgramCache]: Analyzing trace with hash 978837476, now seen corresponding path program 1 times [2020-10-27 00:02:59,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:59,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168227052] [2020-10-27 00:02:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:59,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:00,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:00,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:00,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:01,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:02,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:02,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-27 00:03:02,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:03:02,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3016 [2020-10-27 00:03:02,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:02,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 00:03:02,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:03:02,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-27 00:03:02,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:03,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:03,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:03,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:03,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:03,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:03,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:03:03,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:03:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:03,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:03,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:03,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:03,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:03,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:03:03,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:03:03,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-27 00:03:03,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:03,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:03,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:03,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 00:03:03,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:03,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:03:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:03,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:03,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:03,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:03,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 00:03:03,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:03:03,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-27 00:03:03,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:03,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:03:03,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:03,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-27 00:03:03,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 18 proven. 95 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 00:03:04,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168227052] [2020-10-27 00:03:04,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:04,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 00:03:04,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057215981] [2020-10-27 00:03:04,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 00:03:04,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:04,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 00:03:04,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:03:04,701 INFO L87 Difference]: Start difference. First operand 2087 states and 2696 transitions. Second operand 12 states. [2020-10-27 00:03:08,129 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2020-10-27 00:03:08,442 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-27 00:03:08,964 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-27 00:03:09,207 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-27 00:03:09,626 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-27 00:03:09,917 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-10-27 00:03:10,290 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-27 00:03:12,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:12,919 INFO L93 Difference]: Finished difference Result 2525 states and 3281 transitions. [2020-10-27 00:03:12,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 00:03:12,920 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 247 [2020-10-27 00:03:12,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:12,936 INFO L225 Difference]: With dead ends: 2525 [2020-10-27 00:03:12,936 INFO L226 Difference]: Without dead ends: 2522 [2020-10-27 00:03:12,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=226, Invalid=530, Unknown=0, NotChecked=0, Total=756 [2020-10-27 00:03:12,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2020-10-27 00:03:13,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 2428. [2020-10-27 00:03:13,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2428 states. [2020-10-27 00:03:13,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 3170 transitions. [2020-10-27 00:03:13,017 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 3170 transitions. Word has length 247 [2020-10-27 00:03:13,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:13,018 INFO L481 AbstractCegarLoop]: Abstraction has 2428 states and 3170 transitions. [2020-10-27 00:03:13,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 00:03:13,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 3170 transitions. [2020-10-27 00:03:13,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-27 00:03:13,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:13,029 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2020-10-27 00:03:13,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:03:13,030 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:13,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:13,031 INFO L82 PathProgramCache]: Analyzing trace with hash 689400662, now seen corresponding path program 1 times [2020-10-27 00:03:13,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:13,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946928408] [2020-10-27 00:03:13,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:13,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:13,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:14,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:15,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:17,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:18,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:18,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 452 [2020-10-27 00:03:18,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 00:03:18,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 00:03:18,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 00:03:18,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:03:18,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:18,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:18,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:18,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:18,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:18,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:18,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:03:18,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:18,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:18,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:18,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:18,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:18,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:18,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:18,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:18,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:03:18,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:18,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 00:03:18,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 00:03:18,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:18,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:03:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:18,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:18,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:18,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 00:03:18,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:18,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-27 00:03:18,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:18,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:18,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:18,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-27 00:03:18,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:18,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-27 00:03:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:18,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:18,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:18,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:18,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:18,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 00:03:18,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:18,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:18,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:18,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-27 00:03:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:18,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:18,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:18,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:03:18,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:18,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:03:18,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:18,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:18,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 00:03:18,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:18,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:19,277 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 148 proven. 183 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2020-10-27 00:03:19,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946928408] [2020-10-27 00:03:19,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:19,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:03:19,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888571710] [2020-10-27 00:03:19,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:03:19,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:19,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:03:19,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:03:19,281 INFO L87 Difference]: Start difference. First operand 2428 states and 3170 transitions. Second operand 8 states. [2020-10-27 00:03:25,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:25,606 INFO L93 Difference]: Finished difference Result 6946 states and 9223 transitions. [2020-10-27 00:03:25,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:03:25,608 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 434 [2020-10-27 00:03:25,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:25,627 INFO L225 Difference]: With dead ends: 6946 [2020-10-27 00:03:25,628 INFO L226 Difference]: Without dead ends: 3813 [2020-10-27 00:03:25,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:03:25,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3813 states. [2020-10-27 00:03:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3813 to 3129. [2020-10-27 00:03:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3129 states. [2020-10-27 00:03:25,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 3401 transitions. [2020-10-27 00:03:25,726 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 3401 transitions. Word has length 434 [2020-10-27 00:03:25,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:25,726 INFO L481 AbstractCegarLoop]: Abstraction has 3129 states and 3401 transitions. [2020-10-27 00:03:25,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:03:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 3401 transitions. [2020-10-27 00:03:25,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2020-10-27 00:03:25,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:25,742 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 00:03:25,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:03:25,742 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:25,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:25,743 INFO L82 PathProgramCache]: Analyzing trace with hash 623249407, now seen corresponding path program 1 times [2020-10-27 00:03:25,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:25,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008070656] [2020-10-27 00:03:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:25,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:25,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:26,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:28,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:30,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:30,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 567 [2020-10-27 00:03:30,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:30,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 00:03:30,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:30,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:03:30,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:03:30,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:03:30,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:30,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:30,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:30,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:30,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:30,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:30,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:03:30,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:30,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:30,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:30,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:03:30,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:31,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:31,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:31,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:03:31,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:31,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 00:03:31,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 00:03:31,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:31,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 00:03:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:31,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:31,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:31,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:31,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 00:03:31,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:03:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:31,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:31,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 00:03:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:31,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:31,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:31,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:31,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:03:31,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:31,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:31,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-27 00:03:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:31,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:31,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:03:31,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:31,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:03:31,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:03:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:31,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:31,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-27 00:03:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:31,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:31,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:03:31,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:31,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:03:31,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:31,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:31,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 00:03:31,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:31,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:03:32,110 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 65 proven. 352 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2020-10-27 00:03:32,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008070656] [2020-10-27 00:03:32,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:32,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:32,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181081498] [2020-10-27 00:03:32,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:32,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:32,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:32,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:32,115 INFO L87 Difference]: Start difference. First operand 3129 states and 3401 transitions. Second operand 7 states. [2020-10-27 00:03:35,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:35,120 INFO L93 Difference]: Finished difference Result 6963 states and 7555 transitions. [2020-10-27 00:03:35,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:03:35,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 547 [2020-10-27 00:03:35,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:35,140 INFO L225 Difference]: With dead ends: 6963 [2020-10-27 00:03:35,140 INFO L226 Difference]: Without dead ends: 3840 [2020-10-27 00:03:35,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:03:35,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3840 states. [2020-10-27 00:03:35,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3840 to 3811. [2020-10-27 00:03:35,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3811 states. [2020-10-27 00:03:35,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3811 states to 3811 states and 4106 transitions. [2020-10-27 00:03:35,241 INFO L78 Accepts]: Start accepts. Automaton has 3811 states and 4106 transitions. Word has length 547 [2020-10-27 00:03:35,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:35,241 INFO L481 AbstractCegarLoop]: Abstraction has 3811 states and 4106 transitions. [2020-10-27 00:03:35,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3811 states and 4106 transitions. [2020-10-27 00:03:35,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2020-10-27 00:03:35,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:35,267 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:35,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:03:35,267 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:35,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:35,268 INFO L82 PathProgramCache]: Analyzing trace with hash 2137725551, now seen corresponding path program 1 times [2020-10-27 00:03:35,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:35,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109046216] [2020-10-27 00:03:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:35,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:35,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:36,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:40,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:40,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:40,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 706 [2020-10-27 00:03:40,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:40,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 00:03:40,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 00:03:40,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:03:40,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:40,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:40,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:40,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:40,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:40,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:40,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:03:40,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:40,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:40,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:40,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:40,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:40,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:40,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:40,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:40,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:03:40,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:40,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-27 00:03:40,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:40,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 00:03:40,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:03:40,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:03:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:40,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:41,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:41,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:41,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:41,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 00:03:41,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:41,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:41,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:41,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:03:41,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:41,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-27 00:03:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:41,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:41,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:41,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:41,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:41,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:03:41,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:41,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:41,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:41,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:41,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:41,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-27 00:03:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:41,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:41,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:41,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:03:41,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:41,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:03:41,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:41,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:41,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:03:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:41,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:41,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:03:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:41,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:41,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:41,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:03:41,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:41,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:03:41,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 00:03:41,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:41,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 203 proven. 290 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2020-10-27 00:03:42,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109046216] [2020-10-27 00:03:42,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:42,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:42,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646131115] [2020-10-27 00:03:42,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:42,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:42,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:42,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:42,004 INFO L87 Difference]: Start difference. First operand 3811 states and 4106 transitions. Second operand 7 states. [2020-10-27 00:03:45,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:45,613 INFO L93 Difference]: Finished difference Result 9023 states and 9883 transitions. [2020-10-27 00:03:45,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:03:45,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 686 [2020-10-27 00:03:45,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:45,643 INFO L225 Difference]: With dead ends: 9023 [2020-10-27 00:03:45,643 INFO L226 Difference]: Without dead ends: 5555 [2020-10-27 00:03:45,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:03:45,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5555 states. [2020-10-27 00:03:45,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5555 to 4863. [2020-10-27 00:03:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4863 states. [2020-10-27 00:03:45,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 5226 transitions. [2020-10-27 00:03:45,792 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 5226 transitions. Word has length 686 [2020-10-27 00:03:45,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:45,793 INFO L481 AbstractCegarLoop]: Abstraction has 4863 states and 5226 transitions. [2020-10-27 00:03:45,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:45,793 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 5226 transitions. [2020-10-27 00:03:45,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2020-10-27 00:03:45,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:45,816 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:45,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:03:45,817 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:45,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:45,818 INFO L82 PathProgramCache]: Analyzing trace with hash -205014331, now seen corresponding path program 1 times [2020-10-27 00:03:45,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:45,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804044698] [2020-10-27 00:03:45,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:46,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:46,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:46,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:48,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:50,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:50,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1000 [2020-10-27 00:03:50,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:50,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 00:03:50,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:50,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:50,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-27 00:03:50,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:03:50,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:51,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:03:51,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:51,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:51,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:51,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:03:51,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:03:51,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:51,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:51,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:51,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:03:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:03:51,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:03:51,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 00:03:51,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:03:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:51,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 00:03:51,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:51,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:51,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:03:51,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 00:03:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:51,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:03:51,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:51,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:03:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:03:51,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:03:51,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:03:51,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:51,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-27 00:03:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:03:51,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:03:51,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:51,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:03:51,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:51,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 847 [2020-10-27 00:03:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 00:03:51,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:03:51,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:51,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 00:03:51,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:51,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2445 backedges. 351 proven. 460 refuted. 0 times theorem prover too weak. 1634 trivial. 0 not checked. [2020-10-27 00:03:52,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804044698] [2020-10-27 00:03:52,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:52,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:52,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166712098] [2020-10-27 00:03:52,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:52,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:52,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:52,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:52,764 INFO L87 Difference]: Start difference. First operand 4863 states and 5226 transitions. Second operand 7 states. [2020-10-27 00:03:56,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:56,701 INFO L93 Difference]: Finished difference Result 10089 states and 10911 transitions. [2020-10-27 00:03:56,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:03:56,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 976 [2020-10-27 00:03:56,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:56,727 INFO L225 Difference]: With dead ends: 10089 [2020-10-27 00:03:56,727 INFO L226 Difference]: Without dead ends: 5571 [2020-10-27 00:03:56,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:03:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5571 states. [2020-10-27 00:03:56,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5571 to 5545. [2020-10-27 00:03:56,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5545 states. [2020-10-27 00:03:56,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5545 states to 5545 states and 5933 transitions. [2020-10-27 00:03:56,868 INFO L78 Accepts]: Start accepts. Automaton has 5545 states and 5933 transitions. Word has length 976 [2020-10-27 00:03:56,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:56,869 INFO L481 AbstractCegarLoop]: Abstraction has 5545 states and 5933 transitions. [2020-10-27 00:03:56,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:56,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5545 states and 5933 transitions. [2020-10-27 00:03:56,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-27 00:03:56,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:56,890 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:03:56,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:03:56,890 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:56,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:56,891 INFO L82 PathProgramCache]: Analyzing trace with hash -979612540, now seen corresponding path program 1 times [2020-10-27 00:03:56,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:56,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232740985] [2020-10-27 00:03:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:57,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:57,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:57,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:57,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:02,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:02,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1018 [2020-10-27 00:04:02,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:04:02,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 00:04:02,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:02,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:04:02,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:04:02,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-27 00:04:02,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:02,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:02,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:02,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:02,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:02,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:02,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:04:02,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:02,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:04:02,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:02,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:02,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:02,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:02,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:02,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:04:02,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:04:02,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-27 00:04:02,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-27 00:04:02,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:04:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:04:03,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-27 00:04:03,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:03,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:03,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:04:03,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 00:04:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:03,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:04:03,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:03,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:03,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:03,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-27 00:04:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:04:03,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 00:04:03,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:03,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:04:03,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:03,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2020-10-27 00:04:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:04:03,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 00:04:03,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:03,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:04:03,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:03,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 867 [2020-10-27 00:04:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:04,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:04,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:04,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 00:04:04,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:04,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:04:04,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:04,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:04,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 00:04:04,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:04,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:06,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1959 backedges. 95 proven. 920 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2020-10-27 00:04:06,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232740985] [2020-10-27 00:04:06,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:06,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:06,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296662373] [2020-10-27 00:04:06,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:06,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:06,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:06,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:06,116 INFO L87 Difference]: Start difference. First operand 5545 states and 5933 transitions. Second operand 7 states. [2020-10-27 00:04:09,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:09,030 INFO L93 Difference]: Finished difference Result 11092 states and 11875 transitions. [2020-10-27 00:04:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:04:09,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 996 [2020-10-27 00:04:09,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:09,060 INFO L225 Difference]: With dead ends: 11092 [2020-10-27 00:04:09,061 INFO L226 Difference]: Without dead ends: 5892 [2020-10-27 00:04:09,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:04:09,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2020-10-27 00:04:09,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 5882. [2020-10-27 00:04:09,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5882 states. [2020-10-27 00:04:09,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5882 states to 5882 states and 6278 transitions. [2020-10-27 00:04:09,291 INFO L78 Accepts]: Start accepts. Automaton has 5882 states and 6278 transitions. Word has length 996 [2020-10-27 00:04:09,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:09,292 INFO L481 AbstractCegarLoop]: Abstraction has 5882 states and 6278 transitions. [2020-10-27 00:04:09,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:09,292 INFO L276 IsEmpty]: Start isEmpty. Operand 5882 states and 6278 transitions. [2020-10-27 00:04:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2020-10-27 00:04:09,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:09,319 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:09,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:04:09,320 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:09,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:09,321 INFO L82 PathProgramCache]: Analyzing trace with hash 938488956, now seen corresponding path program 1 times [2020-10-27 00:04:09,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:09,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505278547] [2020-10-27 00:04:09,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:09,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:10,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:10,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:13,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:14,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:14,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1126 [2020-10-27 00:04:14,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:04:14,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-27 00:04:14,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:14,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:14,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 00:04:14,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 00:04:14,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:14,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:14,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:14,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:14,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:14,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:14,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:04:14,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:14,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:14,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:14,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:14,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:14,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:04:14,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:14,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 00:04:14,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:14,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:14,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 00:04:14,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:15,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:04:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:15,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:15,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:15,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:04:15,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:15,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 00:04:15,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:15,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:15,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:15,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-27 00:04:15,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:15,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-27 00:04:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:15,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:15,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:15,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:15,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:15,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:04:15,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:04:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:15,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:15,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-27 00:04:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:15,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:15,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:15,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:04:15,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:15,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:04:15,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:15,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:15,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 00:04:15,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:15,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:15,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-27 00:04:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:15,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:15,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:15,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:15,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:15,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:04:15,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:15,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:15,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-10-27 00:04:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:15,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:15,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:15,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:04:15,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:15,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:04:15,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:04:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:15,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:15,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 833 [2020-10-27 00:04:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:15,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:15,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:15,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:04:15,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:15,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:04:15,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:15,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:15,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:04:15,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:15,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:15,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-27 00:04:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:15,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:15,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:15,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 00:04:15,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:15,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:04:15,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:15,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:15,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 00:04:15,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:15,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3118 backedges. 287 proven. 662 refuted. 0 times theorem prover too weak. 2169 trivial. 0 not checked. [2020-10-27 00:04:16,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505278547] [2020-10-27 00:04:16,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:16,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:16,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702640415] [2020-10-27 00:04:16,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:16,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:16,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:16,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:16,972 INFO L87 Difference]: Start difference. First operand 5882 states and 6278 transitions. Second operand 7 states. [2020-10-27 00:04:20,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:20,773 INFO L93 Difference]: Finished difference Result 12117 states and 12973 transitions. [2020-10-27 00:04:20,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:04:20,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1100 [2020-10-27 00:04:20,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:20,804 INFO L225 Difference]: With dead ends: 12117 [2020-10-27 00:04:20,804 INFO L226 Difference]: Without dead ends: 6580 [2020-10-27 00:04:20,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:04:20,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6580 states. [2020-10-27 00:04:21,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6580 to 6564. [2020-10-27 00:04:21,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6564 states. [2020-10-27 00:04:21,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6564 states to 6564 states and 6996 transitions. [2020-10-27 00:04:21,044 INFO L78 Accepts]: Start accepts. Automaton has 6564 states and 6996 transitions. Word has length 1100 [2020-10-27 00:04:21,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:21,045 INFO L481 AbstractCegarLoop]: Abstraction has 6564 states and 6996 transitions. [2020-10-27 00:04:21,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:21,045 INFO L276 IsEmpty]: Start isEmpty. Operand 6564 states and 6996 transitions. [2020-10-27 00:04:21,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1104 [2020-10-27 00:04:21,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:21,069 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:21,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:04:21,070 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:21,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:21,071 INFO L82 PathProgramCache]: Analyzing trace with hash -332402406, now seen corresponding path program 1 times [2020-10-27 00:04:21,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:21,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110533522] [2020-10-27 00:04:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:21,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:21,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:21,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:21,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:26,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:26,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1129 [2020-10-27 00:04:26,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:04:26,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 00:04:26,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:26,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:26,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-27 00:04:26,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:04:26,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:26,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:26,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:26,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:26,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:26,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:26,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:04:26,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:26,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:26,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:26,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:26,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:26,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:26,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:26,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:26,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:04:26,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:26,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:04:26,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:26,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:26,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:26,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:26,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:26,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:04:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:26,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:26,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:26,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 00:04:26,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:26,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 00:04:26,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-27 00:04:26,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:26,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-27 00:04:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:26,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:26,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:26,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:26,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:26,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 00:04:26,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:26,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:26,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:26,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:04:26,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:26,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-10-27 00:04:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:26,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:26,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:26,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:04:26,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:26,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:04:26,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 00:04:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:26,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:26,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2020-10-27 00:04:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:27,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:27,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:27,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:27,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:04:27,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:27,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:27,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 726 [2020-10-27 00:04:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:27,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:27,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:27,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:04:27,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:27,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:04:27,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:27,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:27,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:04:27,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:27,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:27,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 836 [2020-10-27 00:04:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:27,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:27,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:27,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:04:27,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:27,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:04:27,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:04:27,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:27,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:27,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 974 [2020-10-27 00:04:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:27,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:27,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:27,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 00:04:27,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:27,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:04:27,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:27,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:27,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 00:04:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:27,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:27,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3113 backedges. 401 proven. 527 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2020-10-27 00:04:27,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110533522] [2020-10-27 00:04:27,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:27,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:04:27,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043727294] [2020-10-27 00:04:27,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:04:27,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:27,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:04:27,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:04:27,936 INFO L87 Difference]: Start difference. First operand 6564 states and 6996 transitions. Second operand 8 states. [2020-10-27 00:04:31,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:31,821 INFO L93 Difference]: Finished difference Result 14158 states and 15282 transitions. [2020-10-27 00:04:31,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:04:31,822 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1103 [2020-10-27 00:04:31,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:31,848 INFO L225 Difference]: With dead ends: 14158 [2020-10-27 00:04:31,848 INFO L226 Difference]: Without dead ends: 7939 [2020-10-27 00:04:31,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:04:31,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7939 states. [2020-10-27 00:04:32,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7939 to 7923. [2020-10-27 00:04:32,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7923 states. [2020-10-27 00:04:32,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7923 states to 7923 states and 8553 transitions. [2020-10-27 00:04:32,044 INFO L78 Accepts]: Start accepts. Automaton has 7923 states and 8553 transitions. Word has length 1103 [2020-10-27 00:04:32,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:32,046 INFO L481 AbstractCegarLoop]: Abstraction has 7923 states and 8553 transitions. [2020-10-27 00:04:32,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:04:32,046 INFO L276 IsEmpty]: Start isEmpty. Operand 7923 states and 8553 transitions. [2020-10-27 00:04:32,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1345 [2020-10-27 00:04:32,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:32,084 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:32,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:04:32,085 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:32,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:32,086 INFO L82 PathProgramCache]: Analyzing trace with hash 486311652, now seen corresponding path program 1 times [2020-10-27 00:04:32,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:32,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013292243] [2020-10-27 00:04:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:32,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:32,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:32,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:33,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:37,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:37,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1372 [2020-10-27 00:04:37,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:04:37,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 00:04:37,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:37,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:04:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:04:37,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:37,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:37,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:37,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:37,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:37,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:37,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 00:04:37,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:37,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:37,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:37,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:37,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:37,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:37,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:04:37,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:37,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 00:04:37,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:37,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:37,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:37,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:37,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:37,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:04:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:37,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:37,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:37,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:04:37,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:37,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-27 00:04:37,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:04:37,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:38,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:04:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:38,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:38,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:38,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:38,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:38,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 00:04:38,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:38,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:38,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:38,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:04:38,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:38,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:04:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:38,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:38,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:38,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:04:38,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:38,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:04:38,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 00:04:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:38,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:38,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-27 00:04:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:38,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:38,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:38,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:38,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:38,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:04:38,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:38,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:38,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:38,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:38,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:38,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-27 00:04:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:38,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:38,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:38,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:04:38,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:38,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:04:38,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:38,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:38,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:04:38,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:38,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:38,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 926 [2020-10-27 00:04:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:38,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:38,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:38,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:04:38,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:38,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:04:38,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:38,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:04:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:38,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:38,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1036 [2020-10-27 00:04:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:38,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:38,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:38,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:04:38,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:38,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 00:04:38,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:38,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:38,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:04:38,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:38,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:38,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:04:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:38,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:38,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:38,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:04:38,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:38,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:04:38,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:38,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:38,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:38,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:38,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3456 backedges. 401 proven. 540 refuted. 0 times theorem prover too weak. 2515 trivial. 0 not checked. [2020-10-27 00:04:39,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013292243] [2020-10-27 00:04:39,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:39,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:39,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862333188] [2020-10-27 00:04:39,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:39,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:39,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:39,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:39,772 INFO L87 Difference]: Start difference. First operand 7923 states and 8553 transitions. Second operand 7 states. [2020-10-27 00:04:43,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:43,692 INFO L93 Difference]: Finished difference Result 18576 states and 20208 transitions. [2020-10-27 00:04:43,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:04:43,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1344 [2020-10-27 00:04:43,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:43,738 INFO L225 Difference]: With dead ends: 18576 [2020-10-27 00:04:43,738 INFO L226 Difference]: Without dead ends: 10998 [2020-10-27 00:04:43,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:04:43,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10998 states. [2020-10-27 00:04:44,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10998 to 10648. [2020-10-27 00:04:44,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10648 states. [2020-10-27 00:04:44,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10648 states to 10648 states and 11481 transitions. [2020-10-27 00:04:44,061 INFO L78 Accepts]: Start accepts. Automaton has 10648 states and 11481 transitions. Word has length 1344 [2020-10-27 00:04:44,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:44,062 INFO L481 AbstractCegarLoop]: Abstraction has 10648 states and 11481 transitions. [2020-10-27 00:04:44,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:44,063 INFO L276 IsEmpty]: Start isEmpty. Operand 10648 states and 11481 transitions. [2020-10-27 00:04:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1440 [2020-10-27 00:04:44,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:44,104 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:44,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:04:44,104 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:44,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:44,105 INFO L82 PathProgramCache]: Analyzing trace with hash -2071515374, now seen corresponding path program 1 times [2020-10-27 00:04:44,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:44,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189008425] [2020-10-27 00:04:44,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:44,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:44,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:45,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:45,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:49,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:49,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1467 [2020-10-27 00:04:49,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:04:49,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 00:04:49,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:49,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:49,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-27 00:04:49,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:04:49,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:49,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:49,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:49,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:49,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:49,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:49,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:04:49,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:49,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:49,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:49,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:49,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:49,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:49,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:49,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:49,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:04:49,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:49,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:04:49,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:49,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:49,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:49,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:49,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:49,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:04:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:49,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:49,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:04:49,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:49,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 00:04:49,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-27 00:04:49,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:50,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:04:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:50,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:50,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:50,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:50,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:50,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 00:04:50,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:04:50,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:50,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:04:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:50,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:50,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:50,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:04:50,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:50,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 00:04:50,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-27 00:04:50,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:50,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:50,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-27 00:04:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:50,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:50,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:50,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 00:04:50,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:50,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:04:50,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:50,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 00:04:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:50,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:50,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 879 [2020-10-27 00:04:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:50,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:50,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:50,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:04:50,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:50,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:04:50,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:04:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:50,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:50,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1021 [2020-10-27 00:04:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:50,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:50,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:50,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:04:50,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:50,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:04:50,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:50,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:50,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:04:50,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:50,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:50,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1131 [2020-10-27 00:04:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:50,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:50,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:50,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:04:50,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:50,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 00:04:50,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:04:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:50,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:50,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:04:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:50,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:50,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:50,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:04:50,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:50,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:04:50,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:50,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3832 backedges. 401 proven. 567 refuted. 0 times theorem prover too weak. 2864 trivial. 0 not checked. [2020-10-27 00:04:52,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189008425] [2020-10-27 00:04:52,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:52,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:52,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578546881] [2020-10-27 00:04:52,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:52,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:52,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:52,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:52,275 INFO L87 Difference]: Start difference. First operand 10648 states and 11481 transitions. Second operand 7 states. [2020-10-27 00:04:55,397 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-27 00:04:56,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:56,310 INFO L93 Difference]: Finished difference Result 24684 states and 26852 transitions. [2020-10-27 00:04:56,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:04:56,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1439 [2020-10-27 00:04:56,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:56,352 INFO L225 Difference]: With dead ends: 24684 [2020-10-27 00:04:56,353 INFO L226 Difference]: Without dead ends: 14381 [2020-10-27 00:04:56,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:04:56,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14381 states. [2020-10-27 00:04:56,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14381 to 13701. [2020-10-27 00:04:56,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13701 states. [2020-10-27 00:04:56,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13701 states to 13701 states and 14851 transitions. [2020-10-27 00:04:56,621 INFO L78 Accepts]: Start accepts. Automaton has 13701 states and 14851 transitions. Word has length 1439 [2020-10-27 00:04:56,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:56,622 INFO L481 AbstractCegarLoop]: Abstraction has 13701 states and 14851 transitions. [2020-10-27 00:04:56,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:56,622 INFO L276 IsEmpty]: Start isEmpty. Operand 13701 states and 14851 transitions. [2020-10-27 00:04:56,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1485 [2020-10-27 00:04:56,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:56,666 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:56,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 00:04:56,666 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:56,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:56,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1806101187, now seen corresponding path program 1 times [2020-10-27 00:04:56,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:56,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289624057] [2020-10-27 00:04:56,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:57,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:57,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:57,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:02,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:02,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1514 [2020-10-27 00:05:02,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:05:02,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-27 00:05:02,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:02,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:02,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-27 00:05:02,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 00:05:02,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:02,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:02,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:02,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:02,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:02,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:02,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:05:02,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:02,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:02,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:02,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:02,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:02,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:02,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:02,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:02,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:05:02,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:02,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:05:02,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:02,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:02,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:02,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:02,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:02,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:05:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:02,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:02,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:02,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:05:02,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:05:02,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:02,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:05:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:02,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:02,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:02,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:05:02,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:02,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 00:05:02,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:02,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:02,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:02,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:02,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:02,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:05:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:02,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:02,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:02,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:05:02,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:02,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:05:02,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:02,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:02,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:02,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:02,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:02,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:05:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:02,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:03,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:03,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:05:03,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 00:05:03,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 00:05:03,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:03,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-27 00:05:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:03,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:03,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:03,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 00:05:03,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:03,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:05:03,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:03,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:03,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:03,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 00:05:03,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:03,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-27 00:05:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:03,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:03,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:03,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:05:03,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:03,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 00:05:03,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:03,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:03,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:05:03,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:03,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:03,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1066 [2020-10-27 00:05:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:03,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:03,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:03,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:05:03,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:03,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:05:03,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:03,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:03,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:05:03,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:03,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:03,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1176 [2020-10-27 00:05:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:03,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:03,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:03,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:05:03,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:03,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 00:05:03,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:03,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:03,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:05:03,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:03,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:03,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:05:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:03,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:03,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:03,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:05:03,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:03,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:05:03,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:03,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:03,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:03,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:03,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:04,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4477 backedges. 597 proven. 242 refuted. 0 times theorem prover too weak. 3638 trivial. 0 not checked. [2020-10-27 00:05:04,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289624057] [2020-10-27 00:05:04,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:04,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:04,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448926114] [2020-10-27 00:05:04,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:04,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:04,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:04,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:04,644 INFO L87 Difference]: Start difference. First operand 13701 states and 14851 transitions. Second operand 7 states. [2020-10-27 00:05:11,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:11,870 INFO L93 Difference]: Finished difference Result 28430 states and 30850 transitions. [2020-10-27 00:05:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:05:11,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1484 [2020-10-27 00:05:11,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:11,915 INFO L225 Difference]: With dead ends: 28430 [2020-10-27 00:05:11,915 INFO L226 Difference]: Without dead ends: 15074 [2020-10-27 00:05:11,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:05:11,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15074 states. [2020-10-27 00:05:12,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15074 to 15057. [2020-10-27 00:05:12,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15057 states. [2020-10-27 00:05:12,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15057 states to 15057 states and 16283 transitions. [2020-10-27 00:05:12,302 INFO L78 Accepts]: Start accepts. Automaton has 15057 states and 16283 transitions. Word has length 1484 [2020-10-27 00:05:12,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:12,304 INFO L481 AbstractCegarLoop]: Abstraction has 15057 states and 16283 transitions. [2020-10-27 00:05:12,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:12,304 INFO L276 IsEmpty]: Start isEmpty. Operand 15057 states and 16283 transitions. [2020-10-27 00:05:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1500 [2020-10-27 00:05:12,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:12,355 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:05:12,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 00:05:12,355 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:12,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:12,356 INFO L82 PathProgramCache]: Analyzing trace with hash -587472067, now seen corresponding path program 1 times [2020-10-27 00:05:12,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:12,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953412366] [2020-10-27 00:05:12,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:12,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:13,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:14,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:17,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:17,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1529 [2020-10-27 00:05:17,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:05:17,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5119 [2020-10-27 00:05:17,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-27 00:05:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 00:05:17,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:17,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:17,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:17,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:17,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:17,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:17,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:05:17,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:17,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:18,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:18,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:18,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:18,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:05:18,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:18,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 00:05:18,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:18,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:18,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:18,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:18,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:18,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:05:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:18,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:18,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:18,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:05:18,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:18,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:05:18,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:18,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:18,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:18,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:18,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:05:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:18,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:18,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:18,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:05:18,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:18,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:05:18,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:18,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:18,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:05:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:18,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:18,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:18,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:05:18,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:18,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:05:18,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:18,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:18,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:18,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:05:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:05:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:18,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:18,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:18,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:05:18,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:18,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:05:18,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:18,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:18,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:18,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 00:05:18,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:18,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-27 00:05:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:18,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:18,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:18,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:05:18,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:18,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 00:05:18,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:18,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:18,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:18,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 00:05:18,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:18,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-27 00:05:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:18,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:18,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:18,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 00:05:18,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:18,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 00:05:18,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-27 00:05:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:18,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:18,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1081 [2020-10-27 00:05:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:18,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:18,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:18,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:05:18,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:18,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:05:18,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:18,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:18,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:05:18,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:18,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:18,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1191 [2020-10-27 00:05:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:19,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:19,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:19,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:05:19,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:19,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 00:05:19,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:19,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:19,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:05:19,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:19,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:19,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:05:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:19,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:19,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:19,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:05:19,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:19,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:05:19,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:19,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:20,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4358 backedges. 697 proven. 333 refuted. 0 times theorem prover too weak. 3328 trivial. 0 not checked. [2020-10-27 00:05:20,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953412366] [2020-10-27 00:05:20,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:20,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:20,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380524962] [2020-10-27 00:05:20,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:20,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:20,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:20,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:20,412 INFO L87 Difference]: Start difference. First operand 15057 states and 16283 transitions. Second operand 7 states. [2020-10-27 00:05:26,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:26,563 INFO L93 Difference]: Finished difference Result 32825 states and 35708 transitions. [2020-10-27 00:05:26,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:05:26,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1499 [2020-10-27 00:05:26,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:26,617 INFO L225 Difference]: With dead ends: 32825 [2020-10-27 00:05:26,618 INFO L226 Difference]: Without dead ends: 18454 [2020-10-27 00:05:26,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:05:26,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18454 states. [2020-10-27 00:05:26,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18454 to 18109. [2020-10-27 00:05:26,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18109 states. [2020-10-27 00:05:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18109 states to 18109 states and 19568 transitions. [2020-10-27 00:05:26,957 INFO L78 Accepts]: Start accepts. Automaton has 18109 states and 19568 transitions. Word has length 1499 [2020-10-27 00:05:26,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:26,959 INFO L481 AbstractCegarLoop]: Abstraction has 18109 states and 19568 transitions. [2020-10-27 00:05:26,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:26,959 INFO L276 IsEmpty]: Start isEmpty. Operand 18109 states and 19568 transitions. [2020-10-27 00:05:26,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1514 [2020-10-27 00:05:26,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:27,001 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:05:27,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 00:05:27,002 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:27,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:27,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1359394742, now seen corresponding path program 1 times [2020-10-27 00:05:27,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:27,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872543832] [2020-10-27 00:05:27,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:27,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:27,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:27,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:28,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:29,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:32,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:32,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1541 [2020-10-27 00:05:32,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:05:32,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-27 00:05:32,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-27 00:05:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-27 00:05:32,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:32,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:32,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:32,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:32,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:32,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:32,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:05:32,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:32,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:32,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:32,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:32,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:32,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:32,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:32,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:32,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:05:32,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:32,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 00:05:32,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:32,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:32,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:32,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:32,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:32,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:05:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:32,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:32,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:32,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 00:05:32,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:32,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 00:05:32,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-27 00:05:32,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:32,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-27 00:05:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:32,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:32,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:32,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:05:32,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:32,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-27 00:05:32,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:32,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:32,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:32,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:05:32,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:33,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-10-27 00:05:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:33,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:33,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:33,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:05:33,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:33,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:05:33,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:33,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:33,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:05:33,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:33,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:33,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2020-10-27 00:05:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:33,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:33,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:33,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:05:33,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:33,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:05:33,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:05:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:33,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:33,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-10-27 00:05:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:33,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:33,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:33,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 00:05:33,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:33,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 00:05:33,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:33,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:33,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-27 00:05:33,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:33,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:33,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1095 [2020-10-27 00:05:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:33,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:33,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:33,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:05:33,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:33,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:05:33,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:33,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:33,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:05:33,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:33,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:33,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1205 [2020-10-27 00:05:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:33,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:33,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:33,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:05:33,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:33,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 00:05:33,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:05:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:33,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:33,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:05:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:33,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:33,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:33,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:05:33,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:33,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:05:33,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:33,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:33,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:33,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:33,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3939 backedges. 547 proven. 779 refuted. 0 times theorem prover too weak. 2613 trivial. 0 not checked. [2020-10-27 00:05:34,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872543832] [2020-10-27 00:05:34,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:34,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:34,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541526784] [2020-10-27 00:05:34,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:34,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:34,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:34,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:34,916 INFO L87 Difference]: Start difference. First operand 18109 states and 19568 transitions. Second operand 7 states. [2020-10-27 00:05:40,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:40,981 INFO L93 Difference]: Finished difference Result 36220 states and 39158 transitions. [2020-10-27 00:05:40,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:05:40,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1513 [2020-10-27 00:05:40,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:41,026 INFO L225 Difference]: With dead ends: 36220 [2020-10-27 00:05:41,027 INFO L226 Difference]: Without dead ends: 18797 [2020-10-27 00:05:41,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:05:41,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18797 states. [2020-10-27 00:05:41,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18797 to 18111. [2020-10-27 00:05:41,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18111 states. [2020-10-27 00:05:41,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18111 states to 18111 states and 19246 transitions. [2020-10-27 00:05:41,385 INFO L78 Accepts]: Start accepts. Automaton has 18111 states and 19246 transitions. Word has length 1513 [2020-10-27 00:05:41,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:41,386 INFO L481 AbstractCegarLoop]: Abstraction has 18111 states and 19246 transitions. [2020-10-27 00:05:41,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:41,386 INFO L276 IsEmpty]: Start isEmpty. Operand 18111 states and 19246 transitions. [2020-10-27 00:05:41,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1551 [2020-10-27 00:05:41,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:41,428 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:05:41,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 00:05:41,428 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:41,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:41,429 INFO L82 PathProgramCache]: Analyzing trace with hash -63584988, now seen corresponding path program 1 times [2020-10-27 00:05:41,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:41,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387694928] [2020-10-27 00:05:41,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:41,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:42,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:42,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:46,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:46,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1578 [2020-10-27 00:05:46,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:05:46,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 00:05:46,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:46,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:46,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-27 00:05:46,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 00:05:46,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:46,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:46,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:46,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:46,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:46,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:46,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:05:46,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:46,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:46,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:46,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:46,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:46,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:46,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:46,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:46,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:05:46,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:46,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 00:05:46,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:46,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:46,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:46,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:46,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:46,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:05:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:46,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:47,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:47,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:05:47,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:47,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:05:47,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:47,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:47,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:05:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:47,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:47,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:47,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:05:47,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:47,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:05:47,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:47,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:47,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:47,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:47,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:47,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:05:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:47,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:47,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:47,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:05:47,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:47,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:05:47,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:47,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:47,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:47,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:47,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:47,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:05:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:47,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:47,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:47,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:05:47,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:47,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 00:05:47,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:47,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:47,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:47,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 00:05:47,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:47,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-27 00:05:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:47,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:47,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:47,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:05:47,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:47,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-27 00:05:47,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:47,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:47,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:47,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 00:05:47,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:48,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-27 00:05:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:48,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:48,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:48,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:05:48,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:48,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 00:05:48,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:48,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:48,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-27 00:05:48,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:48,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:48,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:05:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:48,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:48,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:48,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:05:48,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:48,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:05:48,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:48,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:48,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:48,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:48,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:48,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1421 [2020-10-27 00:05:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:48,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:48,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:48,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 00:05:48,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:05:48,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 00:05:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:50,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4145 backedges. 982 proven. 385 refuted. 0 times theorem prover too weak. 2778 trivial. 0 not checked. [2020-10-27 00:05:50,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387694928] [2020-10-27 00:05:50,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:50,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:50,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099785957] [2020-10-27 00:05:50,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:50,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:50,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:50,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:50,017 INFO L87 Difference]: Start difference. First operand 18111 states and 19246 transitions. Second operand 7 states. [2020-10-27 00:05:54,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:54,088 INFO L93 Difference]: Finished difference Result 35552 states and 37822 transitions. [2020-10-27 00:05:54,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:05:54,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1550 [2020-10-27 00:05:54,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:54,129 INFO L225 Difference]: With dead ends: 35552 [2020-10-27 00:05:54,129 INFO L226 Difference]: Without dead ends: 18127 [2020-10-27 00:05:54,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:05:54,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18127 states. [2020-10-27 00:05:54,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18127 to 18111. [2020-10-27 00:05:54,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18111 states. [2020-10-27 00:05:54,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18111 states to 18111 states and 19230 transitions. [2020-10-27 00:05:54,699 INFO L78 Accepts]: Start accepts. Automaton has 18111 states and 19230 transitions. Word has length 1550 [2020-10-27 00:05:54,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:54,700 INFO L481 AbstractCegarLoop]: Abstraction has 18111 states and 19230 transitions. [2020-10-27 00:05:54,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:54,700 INFO L276 IsEmpty]: Start isEmpty. Operand 18111 states and 19230 transitions. [2020-10-27 00:05:54,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1569 [2020-10-27 00:05:54,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:54,739 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:05:54,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 00:05:54,740 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:54,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:54,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1597250676, now seen corresponding path program 1 times [2020-10-27 00:05:54,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:54,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868773970] [2020-10-27 00:05:54,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:55,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:55,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:55,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking...