/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/Problem03_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:41:48,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:41:48,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:41:48,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:41:48,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:41:48,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:41:48,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:41:48,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:41:48,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:41:48,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:41:48,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:41:48,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:41:48,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:41:48,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:41:48,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:41:48,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:41:48,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:41:48,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:41:48,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:41:48,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:41:48,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:41:48,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:41:48,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:41:48,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:41:48,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:41:48,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:41:48,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:41:48,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:41:48,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:41:48,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:41:48,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:41:48,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:41:48,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:41:48,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:41:48,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:41:48,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:41:48,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:41:48,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:41:48,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:41:48,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:41:48,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:41:48,503 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 [2020-10-26 20:41:48,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:41:48,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:41:48,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:41:48,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:41:48,562 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:41:48,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:41:48,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:41:48,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:41:48,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:41:48,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:41:48,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:41:48,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:41:48,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:41:48,564 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:41:48,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:41:48,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:41:48,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:41:48,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:41:48,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:41:48,566 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:41:48,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:41:48,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:41:48,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:41:48,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:41:48,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:41:48,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:41:48,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:41:48,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:41:48,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:41:48,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:41:48,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:41:49,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:41:49,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:41:49,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:41:49,026 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:41:49,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label11.c [2020-10-26 20:41:49,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1971973b1/ec91afaff1944c58a34428b2d08de2b8/FLAG2f7a3c907 [2020-10-26 20:41:50,102 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:41:50,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label11.c [2020-10-26 20:41:50,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1971973b1/ec91afaff1944c58a34428b2d08de2b8/FLAG2f7a3c907 [2020-10-26 20:41:50,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1971973b1/ec91afaff1944c58a34428b2d08de2b8 [2020-10-26 20:41:50,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:41:50,226 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:41:50,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:41:50,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:41:50,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:41:50,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:41:50" (1/1) ... [2020-10-26 20:41:50,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9562b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:50, skipping insertion in model container [2020-10-26 20:41:50,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:41:50" (1/1) ... [2020-10-26 20:41:50,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:41:50,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:41:51,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:41:51,148 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:41:51,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:41:51,492 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:41:51,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:51 WrapperNode [2020-10-26 20:41:51,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:41:51,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:41:51,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:41:51,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:41:51,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:51" (1/1) ... [2020-10-26 20:41:51,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:51" (1/1) ... [2020-10-26 20:41:51,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:51" (1/1) ... [2020-10-26 20:41:51,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:51" (1/1) ... [2020-10-26 20:41:51,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:51" (1/1) ... [2020-10-26 20:41:51,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:51" (1/1) ... [2020-10-26 20:41:51,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:51" (1/1) ... [2020-10-26 20:41:51,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:41:51,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:41:51,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:41:51,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:41:51,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:51" (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 [2020-10-26 20:41:51,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:41:51,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:41:51,849 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:41:51,849 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 20:41:51,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:41:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 20:41:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:41:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:41:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:41:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:41:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:41:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 20:41:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:41:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:41:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:41:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:41:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:41:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:41:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:41:54,297 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:41:54,297 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:41:54,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:41:54 BoogieIcfgContainer [2020-10-26 20:41:54,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:41:54,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:41:54,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:41:54,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:41:54,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:41:50" (1/3) ... [2020-10-26 20:41:54,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abb0335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:41:54, skipping insertion in model container [2020-10-26 20:41:54,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:51" (2/3) ... [2020-10-26 20:41:54,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abb0335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:41:54, skipping insertion in model container [2020-10-26 20:41:54,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:41:54" (3/3) ... [2020-10-26 20:41:54,310 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label11.c [2020-10-26 20:41:54,322 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:41:54,329 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:41:54,343 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:41:54,374 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:41:54,375 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:41:54,375 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:41:54,375 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:41:54,375 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:41:54,375 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:41:54,376 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:41:54,376 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:41:54,402 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-26 20:41:54,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-26 20:41:54,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:41:54,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:41:54,424 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:41:54,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:41:54,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1274475408, now seen corresponding path program 1 times [2020-10-26 20:41:54,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:41:54,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204140274] [2020-10-26 20:41:54,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:41:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:41:55,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:41:55,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:41:58,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:41:58,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-26 20:41:58,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:41:58,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4093 [2020-10-26 20:41:58,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:41:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 20:41:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:41:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 20:41:58,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:42:00,367 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2020-10-26 20:42:00,593 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2020-10-26 20:42:00,809 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2020-10-26 20:42:01,006 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-10-26 20:42:01,331 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:42:01,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:42:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:01,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:01,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:01,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:42:01,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:01,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 20:42:01,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:01,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:42:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:42:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:42:01,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:42:02,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204140274] [2020-10-26 20:42:02,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:42:02,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-26 20:42:02,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949894211] [2020-10-26 20:42:02,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 20:42:02,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:42:02,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 20:42:02,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:42:02,157 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 12 states. [2020-10-26 20:42:02,667 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-26 20:42:03,650 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2020-10-26 20:42:04,669 WARN L193 SmtUtils]: Spent 956.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 196 [2020-10-26 20:42:05,757 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 212 DAG size of output: 204 [2020-10-26 20:42:07,549 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 225 DAG size of output: 203 [2020-10-26 20:42:09,602 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 225 DAG size of output: 202 [2020-10-26 20:42:11,705 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 228 DAG size of output: 201 [2020-10-26 20:42:15,731 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 229 DAG size of output: 200 [2020-10-26 20:42:17,499 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 231 DAG size of output: 199 [2020-10-26 20:42:20,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:42:20,687 INFO L93 Difference]: Finished difference Result 742 states and 1293 transitions. [2020-10-26 20:42:20,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:42:20,689 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 200 [2020-10-26 20:42:20,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:42:20,707 INFO L225 Difference]: With dead ends: 742 [2020-10-26 20:42:20,707 INFO L226 Difference]: Without dead ends: 365 [2020-10-26 20:42:20,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-26 20:42:20,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-26 20:42:20,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2020-10-26 20:42:20,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-26 20:42:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 526 transitions. [2020-10-26 20:42:20,817 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 526 transitions. Word has length 200 [2020-10-26 20:42:20,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:42:20,820 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 526 transitions. [2020-10-26 20:42:20,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 20:42:20,822 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 526 transitions. [2020-10-26 20:42:20,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-26 20:42:20,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:42:20,842 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:42:20,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:42:20,842 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:42:20,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:42:20,844 INFO L82 PathProgramCache]: Analyzing trace with hash -953121187, now seen corresponding path program 1 times [2020-10-26 20:42:20,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:42:20,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4311061] [2020-10-26 20:42:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:42:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:21,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:21,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:23,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:26,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:26,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-26 20:42:26,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:42:26,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-26 20:42:26,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:26,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 20:42:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:42:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 20:42:26,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:27,606 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-10-26 20:42:27,892 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 74 [2020-10-26 20:42:28,278 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 87 [2020-10-26 20:42:28,701 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 86 [2020-10-26 20:42:29,036 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 72 [2020-10-26 20:42:29,348 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 62 [2020-10-26 20:42:29,581 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 48 [2020-10-26 20:42:29,846 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:42:29,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:42:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:29,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:29,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:29,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:42:29,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:29,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 20:42:29,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:29,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:42:29,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:42:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:42:29,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:30,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:42:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:30,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:30,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:30,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:42:30,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:30,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 20:42:30,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:30,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 20:42:30,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:42:30,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:42:30,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:42:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:42:31,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4311061] [2020-10-26 20:42:31,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:42:31,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 20:42:31,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103933349] [2020-10-26 20:42:31,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 20:42:31,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:42:31,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 20:42:31,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-26 20:42:31,064 INFO L87 Difference]: Start difference. First operand 365 states and 526 transitions. Second operand 16 states. [2020-10-26 20:42:31,569 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-26 20:42:32,346 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 96 [2020-10-26 20:42:32,757 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-10-26 20:42:33,224 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 90 [2020-10-26 20:42:34,229 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2020-10-26 20:42:35,285 WARN L193 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 214 [2020-10-26 20:42:37,160 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 238 DAG size of output: 211 [2020-10-26 20:42:39,866 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 241 DAG size of output: 208 [2020-10-26 20:42:43,186 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 242 DAG size of output: 205 [2020-10-26 20:42:46,962 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 243 DAG size of output: 202 [2020-10-26 20:42:48,728 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 243 DAG size of output: 198 [2020-10-26 20:42:51,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:42:51,106 INFO L93 Difference]: Finished difference Result 758 states and 1214 transitions. [2020-10-26 20:42:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 20:42:51,107 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 211 [2020-10-26 20:42:51,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:42:51,114 INFO L225 Difference]: With dead ends: 758 [2020-10-26 20:42:51,114 INFO L226 Difference]: Without dead ends: 514 [2020-10-26 20:42:51,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2020-10-26 20:42:51,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-26 20:42:51,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 510. [2020-10-26 20:42:51,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-10-26 20:42:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 678 transitions. [2020-10-26 20:42:51,161 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 678 transitions. Word has length 211 [2020-10-26 20:42:51,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:42:51,162 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 678 transitions. [2020-10-26 20:42:51,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 20:42:51,162 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 678 transitions. [2020-10-26 20:42:51,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-26 20:42:51,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:42:51,166 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:42:51,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:42:51,167 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:42:51,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:42:51,167 INFO L82 PathProgramCache]: Analyzing trace with hash -386074103, now seen corresponding path program 1 times [2020-10-26 20:42:51,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:42:51,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043121290] [2020-10-26 20:42:51,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:42:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:51,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:51,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:52,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:52,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-26 20:42:52,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:42:52,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1096 [2020-10-26 20:42:52,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:42:52,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-26 20:42:52,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-26 20:42:52,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:52,691 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:42:52,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:42:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:52,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:52,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:52,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:42:52,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:52,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:42:52,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:52,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:42:52,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:42:52,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:42:52,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:52,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:42:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:52,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:52,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:52,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:42:52,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:52,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 20:42:52,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:42:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:42:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:42:52,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:52,980 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:42:52,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043121290] [2020-10-26 20:42:52,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:42:52,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:42:52,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175197579] [2020-10-26 20:42:52,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 20:42:52,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:42:52,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 20:42:52,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:42:52,987 INFO L87 Difference]: Start difference. First operand 510 states and 678 transitions. Second operand 5 states. [2020-10-26 20:42:53,383 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:42:56,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:42:56,275 INFO L93 Difference]: Finished difference Result 981 states and 1454 transitions. [2020-10-26 20:42:56,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:42:56,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-26 20:42:56,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:42:56,286 INFO L225 Difference]: With dead ends: 981 [2020-10-26 20:42:56,286 INFO L226 Difference]: Without dead ends: 737 [2020-10-26 20:42:56,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:42:56,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-10-26 20:42:56,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 728. [2020-10-26 20:42:56,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-10-26 20:42:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 996 transitions. [2020-10-26 20:42:56,344 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 996 transitions. Word has length 221 [2020-10-26 20:42:56,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:42:56,345 INFO L481 AbstractCegarLoop]: Abstraction has 728 states and 996 transitions. [2020-10-26 20:42:56,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 20:42:56,345 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 996 transitions. [2020-10-26 20:42:56,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-26 20:42:56,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:42:56,350 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:42:56,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:42:56,350 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:42:56,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:42:56,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1696619595, now seen corresponding path program 1 times [2020-10-26 20:42:56,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:42:56,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455362252] [2020-10-26 20:42:56,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:42:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:56,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:56,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:56,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:56,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:58,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:58,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:00,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:00,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-26 20:43:00,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 20:43:00,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3800 [2020-10-26 20:43:00,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:43:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:43:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 20:43:00,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:00,461 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:43:00,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:43:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:00,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:00,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:00,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:43:00,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:00,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:43:00,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:00,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:43:00,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:43:00,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:43:00,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:00,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:43:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:00,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:00,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:00,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:00,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:43:00,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:43:00,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 20:43:00,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:00,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:43:00,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:43:00,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 20:43:00,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:00,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:43:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:00,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:00,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:00,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:00,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:43:00,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:43:00,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:43:00,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:43:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-26 20:43:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:43:00,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 20:43:00,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455362252] [2020-10-26 20:43:00,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:43:00,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 20:43:00,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313289045] [2020-10-26 20:43:00,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 20:43:00,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:43:00,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 20:43:00,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:43:00,781 INFO L87 Difference]: Start difference. First operand 728 states and 996 transitions. Second operand 5 states. [2020-10-26 20:43:01,022 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:43:03,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:43:03,050 INFO L93 Difference]: Finished difference Result 1194 states and 1716 transitions. [2020-10-26 20:43:03,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:43:03,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 231 [2020-10-26 20:43:03,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:43:03,059 INFO L225 Difference]: With dead ends: 1194 [2020-10-26 20:43:03,059 INFO L226 Difference]: Without dead ends: 732 [2020-10-26 20:43:03,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:43:03,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-10-26 20:43:03,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 728. [2020-10-26 20:43:03,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-10-26 20:43:03,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 995 transitions. [2020-10-26 20:43:03,129 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 995 transitions. Word has length 231 [2020-10-26 20:43:03,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:43:03,129 INFO L481 AbstractCegarLoop]: Abstraction has 728 states and 995 transitions. [2020-10-26 20:43:03,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 20:43:03,129 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 995 transitions. [2020-10-26 20:43:03,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-26 20:43:03,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:43:03,137 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:43:03,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:43:03,137 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:43:03,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:43:03,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1980605133, now seen corresponding path program 1 times [2020-10-26 20:43:03,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:43:03,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590550429] [2020-10-26 20:43:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:43:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:03,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:03,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:04,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:04,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:05,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:06,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:06,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-26 20:43:06,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:43:06,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3653 [2020-10-26 20:43:06,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:06,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:43:06,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-26 20:43:06,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:43:06,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:07,119 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:43:07,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:43:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:07,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:07,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:07,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:43:07,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:07,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:43:07,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:43:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:43:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:43:07,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:07,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:43:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:07,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:07,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:43:07,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:07,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 20:43:07,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:07,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:43:07,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:43:07,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:43:07,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:07,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:43:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:07,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:07,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:07,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:43:07,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:07,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 20:43:07,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:07,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:43:07,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:43:07,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:43:07,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:07,422 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 20:43:07,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590550429] [2020-10-26 20:43:07,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:43:07,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:43:07,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386047876] [2020-10-26 20:43:07,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:43:07,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:43:07,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:43:07,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:43:07,425 INFO L87 Difference]: Start difference. First operand 728 states and 995 transitions. Second operand 7 states. [2020-10-26 20:43:07,908 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:43:08,546 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:43:13,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:43:13,624 INFO L93 Difference]: Finished difference Result 2093 states and 3230 transitions. [2020-10-26 20:43:13,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:43:13,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-10-26 20:43:13,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:43:13,636 INFO L225 Difference]: With dead ends: 2093 [2020-10-26 20:43:13,636 INFO L226 Difference]: Without dead ends: 1631 [2020-10-26 20:43:13,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:43:13,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2020-10-26 20:43:13,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1619. [2020-10-26 20:43:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1619 states. [2020-10-26 20:43:13,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2261 transitions. [2020-10-26 20:43:13,710 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2261 transitions. Word has length 231 [2020-10-26 20:43:13,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:43:13,711 INFO L481 AbstractCegarLoop]: Abstraction has 1619 states and 2261 transitions. [2020-10-26 20:43:13,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:43:13,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2261 transitions. [2020-10-26 20:43:13,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-26 20:43:13,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:43:13,720 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:43:13,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:43:13,720 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:43:13,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:43:13,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1500071392, now seen corresponding path program 1 times [2020-10-26 20:43:13,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:43:13,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231164510] [2020-10-26 20:43:13,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:43:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:13,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:14,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:15,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:16,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:16,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-26 20:43:16,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:43:16,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3228 [2020-10-26 20:43:17,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:43:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:43:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 20:43:17,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:17,263 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:43:17,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:43:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:17,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:17,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:17,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:43:17,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:17,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 20:43:17,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:17,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:43:17,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:43:17,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:43:17,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:17,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:43:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:17,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:17,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:17,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 20:43:17,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:17,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 20:43:17,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:17,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:43:17,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:43:17,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 20:43:17,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:43:17,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231164510] [2020-10-26 20:43:17,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:43:17,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:43:17,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729696051] [2020-10-26 20:43:17,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:43:17,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:43:17,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:43:17,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:43:17,676 INFO L87 Difference]: Start difference. First operand 1619 states and 2261 transitions. Second operand 7 states. [2020-10-26 20:43:17,975 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:43:19,691 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-26 20:43:21,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:43:21,971 INFO L93 Difference]: Finished difference Result 4377 states and 6636 transitions. [2020-10-26 20:43:21,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:43:21,972 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-26 20:43:21,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:43:21,995 INFO L225 Difference]: With dead ends: 4377 [2020-10-26 20:43:21,996 INFO L226 Difference]: Without dead ends: 3024 [2020-10-26 20:43:22,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:43:22,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2020-10-26 20:43:22,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 2990. [2020-10-26 20:43:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2990 states. [2020-10-26 20:43:22,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 4334 transitions. [2020-10-26 20:43:22,150 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 4334 transitions. Word has length 232 [2020-10-26 20:43:22,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:43:22,150 INFO L481 AbstractCegarLoop]: Abstraction has 2990 states and 4334 transitions. [2020-10-26 20:43:22,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:43:22,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 4334 transitions. [2020-10-26 20:43:22,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-26 20:43:22,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:43:22,165 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:43:22,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:43:22,165 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:43:22,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:43:22,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1508085564, now seen corresponding path program 1 times [2020-10-26 20:43:22,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:43:22,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144126153] [2020-10-26 20:43:22,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:43:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:22,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:22,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:22,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:22,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:27,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:27,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-26 20:43:27,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:43:27,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 20:43:27,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:27,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:43:27,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:43:27,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 20:43:27,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:27,513 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:43:27,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:43:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:27,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:27,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:27,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:43:27,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:27,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:43:27,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:27,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:43:27,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:43:27,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:43:27,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:27,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:43:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:27,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:27,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:27,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:27,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:43:27,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:43:27,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 20:43:27,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:27,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:43:27,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:43:27,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:43:27,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:27,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:43:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:27,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:27,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:27,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-26 20:43:27,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:27,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 20:43:27,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:27,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:43:27,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:43:27,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 20:43:27,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:27,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-26 20:43:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:27,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:27,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:27,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:43:27,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:27,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:43:27,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:27,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:43:27,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-26 20:43:27,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:43:27,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:28,072 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 47 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 20:43:28,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144126153] [2020-10-26 20:43:28,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:43:28,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:43:28,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488343879] [2020-10-26 20:43:28,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:43:28,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:43:28,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:43:28,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:43:28,075 INFO L87 Difference]: Start difference. First operand 2990 states and 4334 transitions. Second operand 8 states. [2020-10-26 20:43:28,357 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:43:30,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:43:30,642 INFO L93 Difference]: Finished difference Result 5686 states and 8457 transitions. [2020-10-26 20:43:30,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:43:30,648 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 255 [2020-10-26 20:43:30,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:43:30,669 INFO L225 Difference]: With dead ends: 5686 [2020-10-26 20:43:30,669 INFO L226 Difference]: Without dead ends: 2966 [2020-10-26 20:43:30,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:43:30,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-10-26 20:43:30,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 2952. [2020-10-26 20:43:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2952 states. [2020-10-26 20:43:30,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 4107 transitions. [2020-10-26 20:43:30,804 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 4107 transitions. Word has length 255 [2020-10-26 20:43:30,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:43:30,805 INFO L481 AbstractCegarLoop]: Abstraction has 2952 states and 4107 transitions. [2020-10-26 20:43:30,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:43:30,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 4107 transitions. [2020-10-26 20:43:30,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-26 20:43:30,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:43:30,822 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:43:30,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 20:43:30,822 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:43:30,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:43:30,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1790364509, now seen corresponding path program 1 times [2020-10-26 20:43:30,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:43:30,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652152873] [2020-10-26 20:43:30,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:43:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:30,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:31,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:31,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:34,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:34,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:35,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:35,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-26 20:43:35,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:43:35,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 20:43:35,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:43:35,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:43:35,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 20:43:35,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:36,184 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:43:36,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:43:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:36,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:36,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:36,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:43:36,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:36,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:43:36,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:43:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:43:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:43:36,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:36,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:43:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:36,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:36,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:36,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:36,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:43:36,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:43:36,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 20:43:36,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:43:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:43:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:43:36,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:36,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:43:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:36,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:36,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:36,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 20:43:36,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:36,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-26 20:43:36,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:36,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:43:36,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:43:36,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 20:43:36,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:36,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 20:43:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:36,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:36,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:36,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:43:36,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:36,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:43:36,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:36,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:43:36,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-26 20:43:36,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:43:36,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:36,773 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 84 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 20:43:36,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652152873] [2020-10-26 20:43:36,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:43:36,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:43:36,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917726019] [2020-10-26 20:43:36,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:43:36,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:43:36,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:43:36,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:43:36,776 INFO L87 Difference]: Start difference. First operand 2952 states and 4107 transitions. Second operand 8 states. [2020-10-26 20:43:37,074 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:43:38,939 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-26 20:43:41,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:43:41,242 INFO L93 Difference]: Finished difference Result 8460 states and 12782 transitions. [2020-10-26 20:43:41,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:43:41,244 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 276 [2020-10-26 20:43:41,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:43:41,288 INFO L225 Difference]: With dead ends: 8460 [2020-10-26 20:43:41,289 INFO L226 Difference]: Without dead ends: 5782 [2020-10-26 20:43:41,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:43:41,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5782 states. [2020-10-26 20:43:41,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5782 to 5676. [2020-10-26 20:43:41,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5676 states. [2020-10-26 20:43:41,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 8189 transitions. [2020-10-26 20:43:41,551 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 8189 transitions. Word has length 276 [2020-10-26 20:43:41,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:43:41,551 INFO L481 AbstractCegarLoop]: Abstraction has 5676 states and 8189 transitions. [2020-10-26 20:43:41,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:43:41,551 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 8189 transitions. [2020-10-26 20:43:41,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-26 20:43:41,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:43:41,578 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:43:41,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 20:43:41,579 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:43:41,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:43:41,579 INFO L82 PathProgramCache]: Analyzing trace with hash 456784766, now seen corresponding path program 1 times [2020-10-26 20:43:41,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:43:41,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200340159] [2020-10-26 20:43:41,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:43:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:41,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:41,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:43,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:44,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:44,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-26 20:43:44,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:43:44,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3140 [2020-10-26 20:43:44,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:44,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 20:43:44,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:43:44,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 243 [2020-10-26 20:43:44,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:45,168 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:43:45,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:43:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:45,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:45,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:45,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:43:45,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:45,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:43:45,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:45,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:43:45,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:43:45,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:43:45,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:45,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:43:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:45,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:45,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:45,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:43:45,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 20:43:45,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:43:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:43:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:43:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:45,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:43:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:45,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:45,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:45,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-26 20:43:45,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:45,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 20:43:45,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:45,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 20:43:45,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:43:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-26 20:43:45,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:46,113 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:43:46,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200340159] [2020-10-26 20:43:46,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:43:46,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:43:46,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869211849] [2020-10-26 20:43:46,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 20:43:46,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:43:46,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 20:43:46,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:43:46,116 INFO L87 Difference]: Start difference. First operand 5676 states and 8189 transitions. Second operand 9 states. [2020-10-26 20:43:46,405 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-26 20:43:47,722 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 171 [2020-10-26 20:43:52,736 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-26 20:43:53,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:43:53,955 INFO L93 Difference]: Finished difference Result 17642 states and 28257 transitions. [2020-10-26 20:43:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 20:43:53,956 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 279 [2020-10-26 20:43:53,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:43:54,061 INFO L225 Difference]: With dead ends: 17642 [2020-10-26 20:43:54,062 INFO L226 Difference]: Without dead ends: 12216 [2020-10-26 20:43:54,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2020-10-26 20:43:54,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12216 states. [2020-10-26 20:43:54,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12216 to 11824. [2020-10-26 20:43:54,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11824 states. [2020-10-26 20:43:54,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11824 states to 11824 states and 17813 transitions. [2020-10-26 20:43:54,724 INFO L78 Accepts]: Start accepts. Automaton has 11824 states and 17813 transitions. Word has length 279 [2020-10-26 20:43:54,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:43:54,725 INFO L481 AbstractCegarLoop]: Abstraction has 11824 states and 17813 transitions. [2020-10-26 20:43:54,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 20:43:54,725 INFO L276 IsEmpty]: Start isEmpty. Operand 11824 states and 17813 transitions. [2020-10-26 20:43:54,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-26 20:43:54,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:43:54,888 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:43:54,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 20:43:54,888 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:43:54,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:43:54,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1256881390, now seen corresponding path program 1 times [2020-10-26 20:43:54,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:43:54,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852975366] [2020-10-26 20:43:54,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:43:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:55,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:55,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:56,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:59,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:59,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:59,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-26 20:43:59,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:43:59,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 20:43:59,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 20:43:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:43:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 20:43:59,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:00,308 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:44:00,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:44:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:00,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:00,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:00,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:44:00,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:00,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:44:00,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:00,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:44:00,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:44:00,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:44:00,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:00,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:44:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:00,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:00,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:00,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:44:00,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:00,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 20:44:00,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:44:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:44:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:44:00,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:00,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:44:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:00,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:00,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:00,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-26 20:44:00,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:00,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 20:44:00,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:00,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 20:44:00,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:44:00,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-26 20:44:00,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:00,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-26 20:44:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:00,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:00,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:00,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 20:44:00,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:00,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-26 20:44:00,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:00,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:44:00,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:44:00,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 20:44:00,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 141 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 20:44:01,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852975366] [2020-10-26 20:44:01,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:44:01,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 20:44:01,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300444190] [2020-10-26 20:44:01,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 20:44:01,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:44:01,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 20:44:01,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:44:01,549 INFO L87 Difference]: Start difference. First operand 11824 states and 17813 transitions. Second operand 11 states. [2020-10-26 20:44:01,831 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-26 20:44:02,369 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:44:03,592 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 161 [2020-10-26 20:44:05,934 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-26 20:44:11,059 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-26 20:44:11,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:44:11,679 INFO L93 Difference]: Finished difference Result 37707 states and 62299 transitions. [2020-10-26 20:44:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-26 20:44:11,680 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 311 [2020-10-26 20:44:11,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:44:11,869 INFO L225 Difference]: With dead ends: 37707 [2020-10-26 20:44:11,869 INFO L226 Difference]: Without dead ends: 26161 [2020-10-26 20:44:11,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=221, Invalid=591, Unknown=0, NotChecked=0, Total=812 [2020-10-26 20:44:11,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26161 states. [2020-10-26 20:44:13,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26161 to 25685. [2020-10-26 20:44:13,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25685 states. [2020-10-26 20:44:13,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25685 states to 25685 states and 40381 transitions. [2020-10-26 20:44:13,334 INFO L78 Accepts]: Start accepts. Automaton has 25685 states and 40381 transitions. Word has length 311 [2020-10-26 20:44:13,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:44:13,335 INFO L481 AbstractCegarLoop]: Abstraction has 25685 states and 40381 transitions. [2020-10-26 20:44:13,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 20:44:13,335 INFO L276 IsEmpty]: Start isEmpty. Operand 25685 states and 40381 transitions. [2020-10-26 20:44:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-26 20:44:13,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:44:13,448 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:44:13,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 20:44:13,449 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:44:13,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:44:13,449 INFO L82 PathProgramCache]: Analyzing trace with hash -765799397, now seen corresponding path program 1 times [2020-10-26 20:44:13,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:44:13,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747435100] [2020-10-26 20:44:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:44:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:13,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:13,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:14,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:16,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:17,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:18,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:18,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-26 20:44:18,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:44:18,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 20:44:18,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:18,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:44:18,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:44:18,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 20:44:18,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:18,816 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:44:18,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:44:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:18,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:18,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:18,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:44:18,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:18,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 20:44:18,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:44:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:44:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:44:18,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:18,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:44:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:19,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:19,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:19,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 20:44:19,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:19,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-26 20:44:19,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:44:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:44:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 20:44:19,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:19,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 20:44:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:19,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:19,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:19,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:44:19,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:44:19,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:44:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:44:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:44:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 20:44:19,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747435100] [2020-10-26 20:44:19,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:44:19,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:44:19,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640543278] [2020-10-26 20:44:19,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:44:19,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:44:19,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:44:19,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:44:19,594 INFO L87 Difference]: Start difference. First operand 25685 states and 40381 transitions. Second operand 7 states. [2020-10-26 20:44:19,954 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:44:21,334 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-26 20:44:24,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:44:24,803 INFO L93 Difference]: Finished difference Result 60925 states and 98057 transitions. [2020-10-26 20:44:24,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:44:24,804 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-26 20:44:24,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:44:25,051 INFO L225 Difference]: With dead ends: 60925 [2020-10-26 20:44:25,051 INFO L226 Difference]: Without dead ends: 35538 [2020-10-26 20:44:25,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:44:25,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35538 states. [2020-10-26 20:44:26,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35538 to 33637. [2020-10-26 20:44:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33637 states. [2020-10-26 20:44:26,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33637 states to 33637 states and 50289 transitions. [2020-10-26 20:44:26,861 INFO L78 Accepts]: Start accepts. Automaton has 33637 states and 50289 transitions. Word has length 310 [2020-10-26 20:44:26,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:44:26,861 INFO L481 AbstractCegarLoop]: Abstraction has 33637 states and 50289 transitions. [2020-10-26 20:44:26,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:44:26,862 INFO L276 IsEmpty]: Start isEmpty. Operand 33637 states and 50289 transitions. [2020-10-26 20:44:27,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-26 20:44:27,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:44:27,033 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:44:27,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 20:44:27,034 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:44:27,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:44:27,034 INFO L82 PathProgramCache]: Analyzing trace with hash -677383002, now seen corresponding path program 1 times [2020-10-26 20:44:27,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:44:27,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263025303] [2020-10-26 20:44:27,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:44:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:27,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:27,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:28,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:28,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:30,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:32,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:32,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-26 20:44:32,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:44:32,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-26 20:44:32,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:44:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 20:44:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:44:32,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:32,452 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:44:32,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:44:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:32,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:32,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:32,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:44:32,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:32,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:44:32,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:44:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:44:32,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:44:32,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:32,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:44:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:32,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:32,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:32,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 20:44:32,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:32,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 20:44:32,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:32,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:44:32,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:44:32,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 20:44:32,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:32,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 20:44:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:32,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:32,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:32,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:44:32,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:32,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 20:44:32,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:32,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:44:32,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:44:32,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:44:32,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:32,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-26 20:44:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:32,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:32,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:32,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:44:32,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:32,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:44:32,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:44:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-26 20:44:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:44:32,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 122 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 20:44:32,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263025303] [2020-10-26 20:44:32,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:44:32,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:44:32,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783377781] [2020-10-26 20:44:32,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:44:32,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:44:32,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:44:32,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:44:32,947 INFO L87 Difference]: Start difference. First operand 33637 states and 50289 transitions. Second operand 7 states. [2020-10-26 20:44:33,342 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:44:34,589 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:44:38,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:44:38,628 INFO L93 Difference]: Finished difference Result 71878 states and 105831 transitions. [2020-10-26 20:44:38,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:44:38,629 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 321 [2020-10-26 20:44:38,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:44:38,823 INFO L225 Difference]: With dead ends: 71878 [2020-10-26 20:44:38,823 INFO L226 Difference]: Without dead ends: 38539 [2020-10-26 20:44:38,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:44:38,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38539 states. [2020-10-26 20:44:40,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38539 to 38083. [2020-10-26 20:44:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38083 states. [2020-10-26 20:44:40,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38083 states to 38083 states and 51048 transitions. [2020-10-26 20:44:40,124 INFO L78 Accepts]: Start accepts. Automaton has 38083 states and 51048 transitions. Word has length 321 [2020-10-26 20:44:40,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:44:40,125 INFO L481 AbstractCegarLoop]: Abstraction has 38083 states and 51048 transitions. [2020-10-26 20:44:40,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:44:40,125 INFO L276 IsEmpty]: Start isEmpty. Operand 38083 states and 51048 transitions. [2020-10-26 20:44:40,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-26 20:44:40,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:44:40,196 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:44:40,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 20:44:40,196 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:44:40,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:44:40,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1426872551, now seen corresponding path program 1 times [2020-10-26 20:44:40,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:44:40,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794488404] [2020-10-26 20:44:40,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:44:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:40,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:40,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:40,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:41,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:42,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:45,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:45,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-26 20:44:45,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:44:45,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 20:44:45,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:45,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:44:45,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:44:45,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-26 20:44:45,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:45,662 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:44:45,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:44:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:45,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:45,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:45,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:44:45,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:44:45,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:44:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:44:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:44:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:45,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:44:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:45,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:45,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:45,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 20:44:45,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:45,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-26 20:44:45,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:45,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:44:45,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:44:45,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 20:44:45,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:46,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 20:44:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:46,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:46,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:46,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-26 20:44:46,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:46,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 20:44:46,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:44:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:44:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 20:44:46,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:46,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-26 20:44:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:46,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:46,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:46,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:44:46,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:46,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:44:46,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:46,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:44:46,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-26 20:44:46,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:44:46,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:46,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-26 20:44:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:46,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:46,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:46,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-26 20:44:46,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 20:44:46,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:44:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 20:44:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:44:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:46,664 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 151 proven. 60 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-26 20:44:46,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794488404] [2020-10-26 20:44:46,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:44:46,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:44:46,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125476168] [2020-10-26 20:44:46,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:44:46,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:44:46,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:44:46,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:44:46,666 INFO L87 Difference]: Start difference. First operand 38083 states and 51048 transitions. Second operand 8 states. [2020-10-26 20:44:46,929 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:44:48,347 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-26 20:44:50,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:44:50,795 INFO L93 Difference]: Finished difference Result 89159 states and 119366 transitions. [2020-10-26 20:44:50,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:44:50,796 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 356 [2020-10-26 20:44:50,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:44:50,994 INFO L225 Difference]: With dead ends: 89159 [2020-10-26 20:44:50,994 INFO L226 Difference]: Without dead ends: 51464 [2020-10-26 20:44:51,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:44:51,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51464 states. [2020-10-26 20:44:52,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51464 to 50018. [2020-10-26 20:44:52,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50018 states. [2020-10-26 20:44:52,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50018 states to 50018 states and 67004 transitions. [2020-10-26 20:44:52,850 INFO L78 Accepts]: Start accepts. Automaton has 50018 states and 67004 transitions. Word has length 356 [2020-10-26 20:44:52,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:44:52,850 INFO L481 AbstractCegarLoop]: Abstraction has 50018 states and 67004 transitions. [2020-10-26 20:44:52,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:44:52,850 INFO L276 IsEmpty]: Start isEmpty. Operand 50018 states and 67004 transitions. [2020-10-26 20:44:52,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-26 20:44:52,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:44:52,925 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-26 20:44:52,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 20:44:52,926 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:44:52,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:44:52,926 INFO L82 PathProgramCache]: Analyzing trace with hash -411728328, now seen corresponding path program 1 times [2020-10-26 20:44:52,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:44:52,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173594030] [2020-10-26 20:44:52,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:44:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:53,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:53,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:54,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:55,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:57,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:58,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:58,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-26 20:44:58,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:44:58,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-26 20:44:58,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:44:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:44:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 355 [2020-10-26 20:44:58,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:58,662 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:44:58,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:44:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:58,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:58,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:58,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:44:58,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:58,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:44:58,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:44:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:44:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:44:58,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:58,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:44:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:58,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:58,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:58,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:58,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:44:58,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:44:58,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 20:44:58,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:58,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:44:58,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:44:58,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:44:58,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:58,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:44:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:58,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:59,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:59,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-26 20:44:59,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:59,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-26 20:44:59,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 20:44:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:44:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 20:44:59,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 148 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-26 20:44:59,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173594030] [2020-10-26 20:44:59,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:44:59,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:44:59,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269851531] [2020-10-26 20:44:59,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:44:59,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:44:59,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:44:59,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:44:59,636 INFO L87 Difference]: Start difference. First operand 50018 states and 67004 transitions. Second operand 8 states. [2020-10-26 20:44:59,920 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:45:01,440 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-26 20:45:04,116 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 168 [2020-10-26 20:45:04,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:45:04,885 INFO L93 Difference]: Finished difference Result 98867 states and 132125 transitions. [2020-10-26 20:45:04,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 20:45:04,886 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 355 [2020-10-26 20:45:04,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:45:05,061 INFO L225 Difference]: With dead ends: 98867 [2020-10-26 20:45:05,062 INFO L226 Difference]: Without dead ends: 50793 [2020-10-26 20:45:05,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:45:05,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50793 states. [2020-10-26 20:45:06,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50793 to 49917. [2020-10-26 20:45:06,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49917 states. [2020-10-26 20:45:07,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49917 states to 49917 states and 66828 transitions. [2020-10-26 20:45:07,216 INFO L78 Accepts]: Start accepts. Automaton has 49917 states and 66828 transitions. Word has length 355 [2020-10-26 20:45:07,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:45:07,217 INFO L481 AbstractCegarLoop]: Abstraction has 49917 states and 66828 transitions. [2020-10-26 20:45:07,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:45:07,217 INFO L276 IsEmpty]: Start isEmpty. Operand 49917 states and 66828 transitions. [2020-10-26 20:45:07,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-26 20:45:07,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:45:07,287 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:45:07,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 20:45:07,287 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:45:07,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:45:07,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1914824021, now seen corresponding path program 1 times [2020-10-26 20:45:07,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:45:07,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866563965] [2020-10-26 20:45:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:45:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:45:07,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:07,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:09,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:09,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:12,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:12,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:45:12,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-26 20:45:12,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:45:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5160 [2020-10-26 20:45:12,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:45:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 20:45:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:45:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 20:45:12,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:45:12,861 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:45:12,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:45:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:45:12,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:12,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:45:12,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:45:12,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:45:12,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:45:12,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:45:12,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:45:12,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:45:12,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:45:12,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:45:12,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:45:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:45:13,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:13,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:45:13,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:45:13,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:45:13,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 20:45:13,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:45:13,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:45:13,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:45:13,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:45:13,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:45:13,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:45:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:45:13,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:13,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:45:13,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-26 20:45:13,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:45:13,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 20:45:13,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:45:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 20:45:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:45:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-26 20:45:13,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:45:13,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-26 20:45:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:45:13,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:45:13,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:45:13,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-26 20:45:13,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:45:13,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-26 20:45:13,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:45:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:45:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:45:13,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 20:45:13,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0